N54 Misfire Cold Start

I start the car and it idles fine for 5-10 seconds then you detect a slight misfire. Observe the requirements of GFF. N54 Engine: Diagnosis of Cold Start Rough Running with Misfire Faults MODEL F01 F02 E82 E88 E89 E90 E92 E93 E60 E61 E71 SITUATION The customer may complain that during the cold start in the morning, the engine runs very roughly and the Service Engine Soon lamp is illuminated. Other than the misfire, the car is smooth and doesnt appear to lack power on acceleration. 0 liter V6 is prone to cold start misfires, particularly on cylinder number six in combination with coolant consumption (frequently with no external leaks present). I would start the engine, and disconnect the cop plug on #1 and see if it changes idle/sound. They tell me it had a loose clip on the spark plug. it Idles rough on start up, but clears up after it warms up. A sub-8C start with a cold engine gives. I found a cheap fix on an N54 forum that may help. BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Cold Start Misfire Fixed Thread Tools Search this Thread. N54 overhaul. The light had actually done out today. As I have already posted my 2004 3. it misfires and idles rough for about 10 min or so a check engine light comes on during that time and is always a P0300 (random Misfire)< I changed plugs and wires and i have also ran a fuel injector treatment to clean out the. Hi all, Bought a lightly damaged SLK 200 AMG, 2012 (62), auto. Performing adaptations is very important stage after replacing any meaning component of engine. I'll share with you Misfire testing and troubleshooting techniques. switch coilpack from another cylinder and see if misfire moves. Car is throwing a CEL for engine misfire & multiple cylinder misfire. Quotes are not sourced from all markets and may be delayed up to 20 minutes. cold start misfires. 2010 BMW Z4 35i 57,000 km cold start misfires. I have held off long enough in posting this. The injector on cylinder three has a little play in it and I think this is why it's getting the misfire under boost. 2008 BMW 135i with N54 engine 82k miles. My noise on the 335i (N54) went away after I drove to work (20 miles), in 4th, but perhaps with your higher mileage, it isn't the case. For the past two mornings, after an overnight sitting, I start it up. Owners of some 2009 and later BMW 3- and 5-series cars with the 3. if it does, replace said misfire. It is not vacuum leaks, injectors, carbon, plugs, coil, etc. Traction control light (yellow triangle in yellow circle) comes on after depressing the loud pedal literally moments after setting off. If this is only at idle, and only when cold, I don't believe long term damage will result. 500 miles later the check engine light flashes again. Main dealer says this is a characteristic of this particular engine which has a built in system to bring the catalytic converter up to operating temperature quickly when the coolant temperature is below 10C. It's throwing codes 300,301,302, and 304. Now the R56 is an “interesting†sounding engine to begin with. Engine Stalls, Misfire Code, & Cylinder Misfire The engine may be stalling because it isn't getting enough throttle opening. Had ImageWorks read the car. 05 Plate renault scenic cold start problems Bad form to reply to own post but I've had the car to my local renault garage. When engine was warm or hot every issue went away. First When the engine is cold and i fire up it runs a bit rough and gives a restricted performance light for about 30 seconds. 29D1 Cylinder 5 Misfire 20D0 Cylinder 4 Misfire 29CC Random / Multiple Misfire After saving the results I restarted the car and all seemed fine again, no engine management light and no major misfires. Now the problem fades after the temp gage starts to move, but before it gets above the cold reading. CCDI occurs first as a cold start noise that can fade as the engine reaches operating temperature. Some of the early production Mini Cooper S models have been known to exhibit the 'Cold Start Rattle'. They replace the plug and the wire. The truck runs rough, and starts rough and has a small oil leak down the back of the motor. I have been experiencing some annoying rough/erratic idles on cold engine starts. ) and coefficients (multipliers for cold engine fuel corrections, etc. The MHD Flasher reveals the immense margin of power BMW left on the table with the N54 / N55 motor, while still retaining the sophistication of the original engine management program. ign coil 3. Exactly what mine does alsoI just re-gapped the plugs , they were 22,25,23,21 , now all at 28 and that made a difference in how smooth the power is , but not the cold start idle. No problems during hot re-start. 8/Auto - Rough Cold Start - Misfire under light load - No CEL Discussion in ' 1994-2004 V6 Mustang Tech ' started by SilverSixer2000 , Jun 2, 2015. The car ran fine for a day or so and went back to the rough idle and misfire. Engine may start, run for a few minutes and stall. With a single cylinder misfire, we need to deduce what cylinder-specific component is causing the cylinder to have faulty ignition, compression, and/or fuel delivery issues. Cheap, so if it does not work, not much lost. Vehicle has been to me twice with the CEL on for P0304 in history and came from another shop. Explains the procedure and steps to find the root cause of the problem. SIB here: SI B 11 02 05 Engine January 2006 Technical Service This Service Information bulletin supersedes S. About to send my 2009/59 E92 330i off for a service with an indy and the issue on the list which I can't clear up is there - the misfire from cold start. Perceived rough running from cold, especially from cold start where the engine is left to idle for a few minutes. Figured it was normal. It will also start to idle properly and stop missing (slight misfire on idle). Truck has about 120k , gogo tunes, afe intake, and a tb exhaust. Intermittant 2012 Kia Forte P0304 on cold start was created by AutoDiagnausetics I am a Dealer Tech in Canada working on a 2012 Kia Forte 2. When warm, the valve must touch the head to cool itself, so some light tapping is necessary. ) compression and 4. Vehicle has been to me twice with the CEL on for P0304 in history and came from another shop. I see a lot of people say they have this problem but not a lot of people saying the changed the tappets and it now all works. 2009 N54 335i - Rough Idle and misfiring when cold. Namely, after starting the turn number is decreased, there is uneven exhaust and smell of unburned fuel, the engine starts to «misfire» , and as the engine warms up, the vehicle starts to work smoothly with no visible signs of engine problems. Observe the requirements of GFF. Only happens on a cold start and disappears after a few minutes driving when the car behaves fine. This is a discussion on Why some VTs misfire on cold starts within the Veloster Turbo ECU Tuning and Data Logging forums, part of the Veloster Turbo Garage category; I think it's kinda commonly known that certain VTs with catless DP's misfire on cold starts and I think I found why. Thursday morning - I head to work and the first light that i accelerate from, i again get loss of power, the engine stumbles again, the engine light comes on, goes off comes on and goes off again. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 2. Some other intake designs are not compatible with certain charge pipe designs. Toyota 4Runner cold start misfire, coolant consumption, P0306 diagnosis tips The 2004-2009 4Runner equipped with the 1GR-FE, 4. N54 engine. if plugs are wet before a cold start, you have a leaky injector. check plugs. If misfire happens only at idle, the EGR valve and purge valve need to be checked, as either one could be stuck open. Misfire on start ups Bigtread, I have the same start up issues on my wifes 2000 xl 4 door. Although this case study involves a 2000 Chevy Monte Carlo (with a 3. anyone encounter misfire on cold start and after a drive. Said it was a bad plug. *Injen Cold Air Intake for 2006-12 BMW 135i/335i/335is [E82/E88/E90/E92/E93] N54. Temperatures droped to -30 (-40 with wind) last night. I already checked everything from coils, plugs, to even doing a compression test along with seafoam to fuel system cleaning. So i downloaded mhd from the app store and read my codes. Over torguing the intake bolts can crack the spacer allowing a bypass intake air to enter on its side and leaning out the fuel trim causing a misfire. For N54 misfire fault complaints during normal engine operation (misfire faults not related to the engine's "cold start"), refer to the following. check plugs. 2010 BMW Z4 35i 57,000 km cold start misfires. 5 misfire while starting cold was created by Jdsnowman Every few starts my 2006 Pilot will set the CEL with codes P0301, P0302, P0303, P0304,p0305, p0306, P300. Still makes no sense. Also there are no problems during driving. Some of the early production Mini Cooper S models have been known to exhibit the 'Cold Start Rattle'. Both heads have been off, disassembled and thoroughly cleaned. Intermittant 2012 Kia Forte P0304 on cold start was created by AutoDiagnausetics I am a Dealer Tech in Canada working on a 2012 Kia Forte 2. My 2000 Pontiac Grand Prix saw the dealer several times for a misfire when the engine is cold. P0302 Bmw Tech Notes The P0302 code means that the cylinder 2 is misfiring or is randomly misfiring. The N55 has not suffered from the same misfire and detonation issues that the N54 did. if it does, replace said misfire. 4L Misfire, MIL Lamp on Posted to Ford Driveability on 10/18/2012 24 Replies Hi all, this truck has been in and out of our shop with an intermittent cold start misfire on the #4 cylinder. These are often called cold start misfires and will likely get slowly worse over time. BAD Misfires at idle and under load BAD Misfires at idle and under load Pages: [ 1 ] 2 3 Go Down. I'd replace all the spark plugs with factory plugs and did notice that there are a lot of carbon build up inside cylinder 4 and on the plug. When the Prius gasoline engine is first started (cold start), the ignition timing is retarded, and idle speed is a bit higher (1,300 RPM or so) than it will be once the engine is warmed up. only on cold starts? try this. I have seen some cats with similar issue that they pass injector test warm but have cold misfire. Now bank 1 (right cylinder) is misfiring when i × We use cookies to help our site to work, to help us understand how it is used, and to tailor advertising on this and other sites. Smell of raw gasoline coming out of the tail-pipe. As long as you stay out of higher boost it drives fine. what can be the problem. Does not look like it was the injector at all. cold start misfires. These applications are of the "N" family of 6-cylinder engines (N52, N51, N54, N55, N56, etc) that are used in most BMW models from the later 2000′s onward. It could be the spark plug, Fuel injector,or compression on that cylinder. Not even having the vehicle a month, at 935 miles the vehicle began developing a rough idle / misfire condition on a cold start (the first start of the day). 0 overhead valve “Vulcan” engine. Misfires on cold start N54 09' 335I I also have gotten a couple misfire codes to go along with this. on the road it pulls well and can't notice anything out of the ordinary. when i purchased the car i ran it for a month and everything was smooth. I double checked all filter gaskets Shop says 3 injectors are failing. But only on cold start when its colder outside its worse. First When the engine is cold and i fire up it runs a bit rough and gives a restricted performance light for about 30 seconds. Now the R56 is an “interesting†sounding engine to begin with. At 1st i thought it might be carbon buildup since im at 96000kms so i did the carbon clean on friday and it didn't help my rough idle. I decided to start a new thread on this as it may be of use to others who are searching for answers to this common problem. A D V E R T I S E M E N T S. Note that the Bosch plug is actually the N55 OEM plug, which was made one-step colder by BMW after they realized the N54 OEM plugs were a little too hot. These applications are of the "N" family of 6-cylinder engines (N52, N51, N54, N55, N56, etc) that are used in most BMW models from the later 2000′s onward. I would start with replacing the intake gasket that was poorly designed using bakilite spacer sandwiched between two intake gaskets. Always begin any intermittent misfire diagnosis by using your professional scan tool to retrieve misfire codes and freeze-frame data. N54 Engine: Diagnosis of Cold Start Rough Running with Misfire Faults MODEL F01 F02 E82 E88 E89 E90 E92 E93 E60 E61 E71 SITUATION The customer may complain that during the cold start in the morning, the engine runs very roughly and the Service Engine Soon lamp is illuminated. When in cold weather 30 degrees or less, I can try and start my truck, but for 3 turns of the key nothing happens. 2010 BMW Z4 35i 57,000 km cold start misfires. Is this a common temp sensor problems or - Volvo 1999 C70 question. I call the dealer and they are telling me it sounds like a cold start misfire problem. Once warm it'll start up smooth every time. 6 crdi "cold" start in warm weather = hiccups, small coughs, misfire? « Reply #3 : May 07, 2015, 03:10:13 » My CRDI just had mass airflow/sensor replaced because of some very rough idling after starting first thing at the beginning or end of the day, usually associated with some smoke. I noticed that when I let the element warm up on the cold mornings before I took off it would not die at all. Exactly what mine does alsoI just re-gapped the plugs , they were 22,25,23,21 , now all at 28 and that made a difference in how smooth the power is , but not the cold start idle. Codes: - 29CC Misfire several cylinders (actually all 6) - 2A7C Variable camshaft timing control, intake, cold start - 2A82 Vanos intake - 2A98 Crankshaft - inlet camshaft, reference - 3100 Boost pressure control, deactivation. PCV, air leak, oil separator. These spark plugs should be changed every 20,000 miles or when rough idling, long cold starts, or misfires begin to take place. This then progressed to not ticking over at all. Misadjusted valves results to misfires at cold start. No faults ever set when the skip was felt but at times the vehicle would almost stall. Specifically, MCS owners complaining about a peculiarly loud engine rattle on start-up. P054B (Cold Start B Camshaft Position Timing Over-Retarded Bank 1) is a code that alerts the operator that the ECM monitored an "overly"- retarded VVT position for camshaft timing on bank 1. Previous owner apparently had the same issue as there was an aftermarket coil pack in cylinder 1, which I replaced with an OEM coil pack along with replacing. Cold start misfiring, drivability issues 1999 328i E46 has a misfire condition on cold start. Misfires on cold start N54 09' 335I I also have gotten a couple misfire codes to go along with this. Oct 12th 2010 at 6:58PM. cold engine hard starting/no start and/or slight surging at idle - diagnostic trouble code (dtc) p0300 (misfire) - 3. Remove plugs, if they are wet change the injectors. My Profile My Preferences My Mates. Okay i've got a 6L in my 04 esky, Last week we had a really cold day and while warming it up the check engine light cam on. Starting misfire/missing from engine. Quotes are not sourced from all markets and may be delayed up to 20 minutes. Perceived rough running from cold, especially from cold start where the engine is left to idle for a few minutes. Next day cold start really runs rough and got these codes all together. Service bulletins: ^ B12 05 09 - N54 (E6x) Misfire Faults due to DME Software Error. My 2011 325i with 50k miles started to display signs of rough idle a couple of weeks ago. The dealership told me they tried it a few times because they had to run it through a cold engine. The PCM determines this information using the crankshaft position sensor and camshaft position sensor. Service and Warranty Reference Library Title:2013/08/03 Hard Starting Cold With Engine Misfire and Low Compression, Vehicle Starts and Runs Normally When Hot (2007-08 9-3 with B207 only) Date: 03/08/2013. 2010 BMW Z4 35i 57,000 km cold start misfires. The car ran fine for a day or so and went back to the rough idle and misfire. Would appreciate any suggestions on fixing a misfire I'm having on my '02 1. i checked this yesterday and swapped for a new plug and still the same thing. My 2010 Toyota Tundra SR5 V8 5. N54 Engine: Diagnosis of Cold Start Rough Running with Misfire Faults MODEL F01 F02 E82 E88 E89 E90 E92 E93 E60 E61 E71 SITUATION The customer may complain that during the cold start in the morning, the engine runs very roughly and the Service Engine Soon lamp is illuminated. Once it hits ol a few seconds later, it starts to be a bit cleaner, but not perfect for a few seconds. But I would think you would be getting a misfire code. Cold start and there is a misfire. Often can cause misfires sufficient to bring up the "Check Engine" warning lamp. Ride: E92 N54, F02 N54. I have have been dealing with this P0171 diagnostic trouble code for many years on many different year make and model vehicles. Once the truck gets semi-warmed up / warmed up, turn it off and then back on and she runs like new with no misfire and no flashing CEL. Could be vacuum leak, faulty crankcase breather or fuel delivery. They were able to still see the codes and found out that there was is a TSB for Cold Start problems. When the Prius gasoline engine is first started (cold start), the ignition timing is retarded, and idle speed is a bit higher (1,300 RPM or so) than it will be once the engine is warmed up. Not sure what the issue is. The car is okay once it is up to temp, it only does this sometimes on cold start. No success. I do not experience any long cranks even when cold by the way. Car fast idled like normal then dropped back to normal revs with no warning lights on or misfire. Not something I am going to worry about. Exactly what mine does alsoI just re-gapped the plugs , they were 22,25,23,21 , now all at 28 and that made a difference in how smooth the power is , but not the cold start idle. Could be vacuum leak, faulty crankcase breather or fuel delivery. The roughness sounds like a consistent miss until it stops and everything smooths out. Have the following codes: 16685, 16687, 16891, 17544, 16684. It's throwing codes 300,301,302, and 304. A compression test with the engine cold would be my first step. Both heads have been off, disassembled and thoroughly cleaned. But I would think you would be getting a misfire code. So it does seem ('14-'18) Random Knocking, Misfire, rough idle at Cold Start - Updated!. No misfires occurred under normal driving conditions. BMW 1 Series, E87, 116i - Problems with the car on a cold start - SGM26 : Hi, I recently purchased a '57 plate BMW 116i 4 months ago from Arnold Clark and it has 2 years mechanical warranty. When the engine is cold the fuel sits in the cylinder and causes a misfire on start up until the cylinder clears its self. Yeah really, well turns out that the new o2 only fixed the problem for about a month. Troubleshooting My car would also misfire doing 60mph @ 2k rpms, Which my Tech told me is one of the symptoms. This is a discussion on Why some VTs misfire on cold starts within the Veloster Turbo ECU Tuning and Data Logging forums, part of the Veloster Turbo Garage category; I think it's kinda commonly known that certain VTs with catless DP's misfire on cold starts and I think I found why. When plugged in the only code we are given is misfire on cylinder 2, have changed plugs and coil packs, but still runs rich for a minute or so from a cold start. Misfire on cold start (cylinder #5) w/fuel shutoff: can hear/feel the misfire prior to the fault being set. All then OK. SIB here: SI B 11 02 05 Engine January 2006 Technical Service This Service Information bulletin supersedes S. Recalls and faults: BMW E90 3-Series Sedan (2005-11). Now the Code is coming up as random misfire. Last few weeks my cold start is getting worst. No success. 0L Multiple Cylinder misfire Well here is the latest progress report, I found a listing it might be a slight vapor lock with the fuel rail, so with nothing better to do I wrapped the fuel rail with heat shield tape, a 20$ investment and several hours of tapping fun. Hence, the start-up combustion cycle misfire detection and re-ignition control based ion current signal feedback strategy is favorable for reducing unburnt hydrocarbon emissions. A cold engine will crank over slower than a warm engine, the ignition tim- ing will range between top dead center to slightly retarded providing optimum starting. Once you have determined the cylinder, now you can start diagnosis on what is causing the misfire. P0300-P0304 Misfire when cold - posted in General Discussion Forum: Hi folks. Traction control light (yellow triangle in yellow circle) comes on after depressing the loud pedal literally moments after setting off. Both heads have been off, disassembled and thoroughly cleaned. I double checked all filter gaskets Shop says 3 injectors are failing. Stopped the car for about 5 min to run into a coffee shop, came out and started it up. Previously, it was a daily driver. I replaced all four plugs (NGK OEM), all four coils (OEM latest rev), Coolant temp sensor (temp gauge was flaky). Information is provided 'as is' and solely for informational purposes, not for trading purposes or advice. Most of the time no problems during cold start, only very little bit vibrating rpm needle. Cold start and there is a misfire. Engine misfires when cold but runs fine after warming up few minutes later? My 97 SLS used to belong to my grandparents but old age and another car; they gave it to me. Otherwise when applying more throttle the misfire disappears and the engine is smooth. It is shaky and if u t. Once warm it'll start up smooth every time. Is this a common temp sensor problems or - Volvo 1999 C70 question. 2010 BMW 535xi Wagon AWD (E61) L6-3. 08 Silverado 5. The cold start is the same (runs on 5 cyl) except that it clears up more quickly now. Does not look like it was the injector at all. The light had actually done out today. What does it means - to perform adaptations? To perform adaptations: to create an initial maps for all management systems (long-term fuel trim map, ignition map, etc. 8T AUQ cold startup, engine misfires while its idle is settling down to normal. So everyone on hear that says a weak battery cannot cause a misfire is wrong especially with a Subaru!!! I recently ran into this exact same problem with my 2013 Subaru Impreza 2. Cold start and there is a misfire. Misfire on Cold Start so recently ive been getting a P0303 for misfire on cylinder 3. N55 Cold Start Missfire. 0L (N54) engine may come into your shop with a complaint that the motor runs very rough after a cold start. clean throttle 5. This leak will result in a decrease in fuel efficiency, and in some cases performance and acceleration. B11 02 05 dated May 2005. Misfire on hard acceleration. The good news is that testing a misfire code, or misfire codes, or a rough idle condition is not that hard and it's something you can do! In this tutorial, I'm going to explain in some detail the most common causes of misfires and misfire codes (P0300, P0301, P0302, P0303, P0304 -OBD II equipped 1. The rattle sound was far and very seldom heard on cold start ups and very hard to duplicate. 5X the legal limit, or if the misfire rate is high enough to cause possible damage to the catalytic converter. Truck has about 120k , gogo tunes, afe intake, and a tb exhaust. My car had this problem as well and it has been driving me nuts for 6 months. I have had this random misfire code along with misfire first 1000rpm atleast 5 times over the past 2. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. It could be the spark plug, Fuel injector,or compression on that cylinder. Misfire cold start help? i have a 95 camaro 3. I'm thinking it's too lean when it's in cl before the o2 sensor warms up. AudiRevolution. Also can i only replace injector and program one injector ? Or do i need to replace all 6. Apparently this is a big problem for alot of the twin turbos BMW makes, that's why it's warrantied for 10years or 120,000 miles. They have been re-designed by GM to correct the problem of they shrink over time, do not seal when cold, then seal when warmed up. I replaced all four plugs (NGK OEM), all four coils (OEM latest rev), Coolant temp sensor (temp gauge was flaky). When u start it or gas it u can smell gas a little. 0L with a intermittent P0304. This could be followed by exhaust smoke coming out of the tailpipe, the smell of gas, and loud popping sounds. I just delete the code and go about my day. 2003 Ford F-150 King Ranch 5. I would start the engine, and disconnect the cop plug on #1 and see if it changes idle/sound. Previous owner apparently had the same issue as there was an aftermarket coil pack in cylinder 1, which I replaced with an OEM coil pack along with replacing. Some other intake designs are not compatible with certain charge pipe designs. Cheap, so if it does not work, not much lost. The engine may only misfire and run rough when cold but then smooth out as it warms up. ign coil 3. Cold start is determined by the ECM based on the engine coolant temperature and rpm during start up. Re: Engine Start-Misfire on Cold Weather Start-TSB for This This afternoon I took my wife's Genesis to my local Hyundai dealer and problem. The car runs lovely nice and smooth no flat spots no issues at all. Misfire Under Cold Starts? Post by 06_civic_si_gi » Thu Mar 24, 2011 12:20 am im not sure what is causing this but here is alil background on it. Give it a little Rev and it still misfires. The first time I got misfire codes on all 6 cylinders and 0300 for random multiple. It happens only on initial start, when the engine is cold. com and affiliated sites. Often can cause misfires sufficient to bring up the “Check Engine” warning lamp. this truck runs perfect otherwise does not burn oil and pulls my 18ft boat up hills with no lack of power. What causes this issue and how can it be fixed?. Go to the dealer again its a misfire on cylinder 8. Also, I have an OBD reader on the way and can hopefully read my fuel trim etc. The result of their diag check is a faulty camshaft sensor. Once it hits ol a few seconds later, it starts to be a bit cleaner, but not perfect for a few seconds. N54 Engine: Diagnosis of Cold Start Rough Running with Misfire Faults MODEL F01 F02 E82 E88 E89 E90 E92 E93 E60 E61 E71 SITUATION The customer may complain that during the cold start in the morning, the engine runs very roughly and the Service Engine Soon lamp is illuminated. So everyone on hear that says a weak battery cannot cause a misfire is wrong especially with a Subaru!!! I recently ran into this exact same problem with my 2013 Subaru Impreza 2. Explains the procedure and steps to find the root cause of the problem. That is what sets a no activity code as the 02 sensor will read a lean condition due to the misfire. Other intake styles occupy different parts of the engine bay and can interfere with other upgrades by different companies. Right after oil and oil filter change (schaeffers 5w40 syn), and fuel filters changed (motorcraft), it developed a misfire when cold. PCV, air leak, oil separator. Page 1 of 3: How to Troubleshoot a Misfire (GM 4. I was really astonished there were no fault codes because the whole car was vibrating very much. 29D1 Cylinder 5 Misfire 20D0 Cylinder 4 Misfire 29CC Random / Multiple Misfire After saving the results I restarted the car and all seemed fine again, no engine management light and no major misfires. It only happens when engine is cold - I monitor combustion quality right in the morning when engine hasn't ran for over 12 hours, and I get a couple of blips on cyl 3 under 0. After 5 minutes or so of driving it goes away. Mini Cooper Cold Start Rattle. Traction control light (yellow triangle in yellow circle) comes on after depressing the loud pedal literally moments after setting off. P0304: Cylinder #4 Misfire. Quite a prominent misfire too. An Injen Tecnology Dual Cone Air Intake for BMW 335i. If left will become quite pronounced misfire with engine light coming on. 5 misfire while starting cold was created by Jdsnowman Every few starts my 2006 Pilot will set the CEL with codes P0301, P0302, P0303, P0304,p0305, p0306, P300. A compression test with the engine cold would be my first step. If the engine speed fluctuates enough to cause the Crankshaft Position sensor signal to vary, the Engine Control Module can determine that a misfire is occurring. The misfire only happens when the engine is cold. Some of the early production Mini Cooper S models have been known to exhibit the 'Cold Start Rattle'. It happens only on initial start, when the engine is cold. When cold starting this car would misfire, but when warm it quickly cleared. cold start misfire 12th October 2011, 11:40. BMW 1 Series, E87, 116i - Problems with the car on a cold start - SGM26 : Hi, I recently purchased a '57 plate BMW 116i 4 months ago from Arnold Clark and it has 2 years mechanical warranty. Basic Causes Of A Misfire Condition. CCDI occurs first as a cold start noise that can fade as the engine reaches operating temperature. I am getting a cold start misfire on my 04 honda pilot for several months. Does not look like it was the injector at all. Once the idle dropped to normal ran smooth as could be. Can anyone help decode these and any pointers of where to start would be much appreciated too. Until you part the car up and leave it over night. My 2016 Ecoboost Mustang has what seems to be an oil leak into plug well #2, causing oil fouling and rough idling on cold starts after the car's been run until good and warm and then let sit for a day or so. I am sharing my experience with this chronic problem of misfire at a certain speed when cruising that I see repeatedly in this forum First I admit that this forum helped me a lot to find the cause of my problem but unfortunately after spending lot of money in changing many parts First thing I wan. The car ran fine for a day or so and went back to the rough idle and misfire. After driving it for awhile and letting it warm up for a little I restart it and it is fine. I replaced all four plugs (NGK OEM), all four coils (OEM latest rev), Coolant temp sensor (temp gauge was flaky). P050D Code - Cold Start Rough Idle. I decided to start the car up to see how it was running and it fired up (took a little while to crank over but this could be due to the cold weather and not being used over a week). I replaced all the plugs with NFL and also s new coil pack for cylinder 6 and after 3 or 4 days it will reappear. Got in it to leave work and same again misfire literally soon as it started up and it cleared after 2 mins or so. Namely, after starting the turn number is decreased, there is uneven exhaust and smell of unburned fuel, the engine starts to «misfire» , and as the engine warms up, the vehicle starts to work smoothly with no visible signs of engine problems. I'm thinking it's too lean when it's in cl before the o2 sensor warms up. Now the Code is coming up as random misfire. p0304 misfire on cold start Z22YH Hello All I have a very strange issue with my Vectra SRI XP2 Z22YH. 0 has a nasty misfire on cold start, but goes away when warm also. For a couple of minutes and then it clears and is fine! Could a too cold plugs cause this ? Or maybe a leaky injector ?. I was really astonished there were no fault codes because the whole car was vibrating very much.