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Mini cooper misfire on startup?
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Mini cooper misfire on startup?
I have an 08 R56 MCS. 25mm would blow the spark out cause a misfire more so with hard plugs, if you have misfires when its cold live data fuel rail pressure you should have around 5mpa at idle , they will start. I cleared them and the car has not been able to start anymore. Mini Owners of Texas (MOT) is a loosely knit "club" with no dues, no officers, and no real meetings but does have occassional gatherings in bigger Texas cities to eat, drink and discuss Minis. The check engine light came on and giving a little gas it began to run properly. Any suggestions or help on what might be causing this would be appreciated. I have new oem coils, and new ngk iridium spark plugs. 6l 4 cylinder engine. I asked them to check the error code and the throttle issue. Might be a sporadic issue. Found VANOS solenoid jammed with debrie and replaced it Checked timing by locking crank and cams with tool, found chain had stretched and upper guide was broken. Figured out the second from the left cylinder is not firing at all. Discover the advantages and disadvantages of ductless mini-split air conditioners for your home. They reported the error was fuel-related and was cleared, and also told me that the throttle issue no longer occured. 2007 Mini Cooper S Misfire. Mar 15, 2012 · I asked them to check the error code and the throttle issue. Once the engine warmed up, it always runs fine. On a cold start, the engine experiences a harsh rough stumble idle, it will log Misfires on all 4 cylinders, but more importantly after about 2 minutes, it clears up and no issues until "next cold start" or sitting for at least 8 hours. Once started and warmed up (typically within one minute of driving) the car performs perfectly. Recently I had a cracked cylinder and changed the whole engine with a less used engine and these issues started. Once started and warmed up (typically within one minute of driving) the car performs perfectly. Need help, occasion Misfire 2013 Base N16 Cooper hatch OBD2 reader coming up with a P0301 Cylinder 1 misfire, only started last monday, cleared it twice now. The only original parts in the engine bay are the inlet manifold, wiring loom and ECU. Was throwing misfire codes for Cyls 2 & 3 along with general Misfire code p0300. Hey guys, I have a 2009 clubman S with 125k miles. Rough start, but then runs fine. They reported the error was fuel-related and was cleared, and also told me that the throttle issue no longer occured. Used my code reader to check fuel rail pressure. I know it could be the high pressure fuel pump, or coils or something else. But after about 60 seconds everything is normal. Inspect and replace damaged hoses as needed. A. Diagnostic Process: Monitored low side fuel pressure (the N14 is equipped with direct fuel injection system so it has 2 different fuel supply systems. 1. Also recently cleaned the intake valves and that did not solve issue. Fault code 2B15 fixed? I've been chasing the above fault code ('differential pressure sensor, intake manifold plausibility'), which presents itself every few days, but with no symptoms other than the check engine light. Recently started misfiring cylinders 1&3 when cold only. My Rpm struggles at times where it practically. 4 (peugeot engine) with a misfire on cold but when it warms up it runs like a dream. Agplant57 Discussion starter. Going to be £300 so im actually getting quite worried as to how much this repair is going to ost eventually??? Like M marque 1224 posts · Joined 2011 #5 · Jan 4, 2013 Hi ya A misfire can be a few thing bad coil pack bad spark plug or injector bad fuel If it was a misfire there should be a code P0304 cylinder 4 misfire. 5 Mini Cooper for advice on rough idling when cold and also intermittent stalling. Mar 15, 2012 · I asked them to check the error code and the throttle issue. Reving up actually helps a little bit as when it stalls or when it just cranks the rpm is around 500, while when it finally works alright is around. View 14 photos for 336 N Ninnescah St, Pratt, KS 67124, a 1 bed, 1 bath, 640 Sq single family home built in 1920 that was last sold on 12/20/2021. But after about 60 seconds everything is normal. Nov 2, 2022 · #1 · Nov 2, 2022. Oct 13, 2022 · At present, the car takes 2-3 attempts to start and regularly misfires when cold. Still a misfire on cylinder 3 and my Mini conked out and wold start for about a minute. Might be a sporadic issue. The radiator cooling fan also comes on straight away and stays on 5minutes. Wife has a 2013 countryman 1. Owned it 10 months and covered 10000 miles no fault codes stored and it doesn't show up on the Mini dealers "misfire" system noticed is on start up. Mileage was verified and overall state of the car is coherent. I have a really rough idle but the car seems to have full power. could be a bad PCV line that runs from the valve cover to the intake. View FREE Public Profile & Reputation for Cooper Pierce in Cheney, KS - Court Records | Photos | Address, Email & Phone | Reviews | $100 - $149,999 Net Worth Jul 23, 2018 · P0300 is a random misfire which is not related to one cylinder only. Also recently cleaned the intake valves and that did not solve issue. We have a 2007 Mini S with cold start/morning start issue. Figured out the second from the left cylinder is not firing at all. At present, the car takes 2-3 attempts to start and regularly misfires when cold. Multiple misfires 1-4(random). Multiple misfires 1-4(random). The plugs have been replaced as well as a coil. They reported the error was fuel-related and was cleared, and also told me that the throttle issue no longer occured. Rich running is caused by a fuel injector stuck open, a sensor giving the computer faulty information about the external or internal temperature, or several other fuel injection related issues. Used my code reader to check fuel rail pressure. Whenever I'm doing a cold start (after leaving parked overnight) it will start up fine, then splutter and die quickly, it almost sounds like it's not getting any fuel as it goes. Indices Commodities Currencies Stocks Have you ever fallen asleep and been jolted awake in a panic? Here's what to know about mini panic attacks when falling asleep. Do these plugs look bad? They're iridium. Hi, I have a frustrating issue with my 03 reg Cooper S. Nov 2, 2022 · #1 · Nov 2, 2022. this procedure is called a power latch. Dec 4, 2022 · 2013 Mini Cooper Countryman S. 6 n/a N12 misfire mystery. A cracked fuel return neck (what the fuel return pipe connects to on the valve cover) Can also produce mis fire'sA that is going bad can produce that. Do these plugs look bad? They're iridium. View FREE Public Profile & Reputation for Cooper Pierce in Cheney, KS - Court Records | Photos | Address, Email & Phone | Reviews | $100 - $149,999 Net Worth P0300 is a random misfire which is not related to one cylinder only. There can be many possible causes, so all need to be carefully investigated. Try again, it starts and is rough like three … At present, the car takes 2-3 attempts to start and regularly misfires when cold. When it ideals it bounces between 575-780ish. Jan 6, 2023 · This seems fairly common from what I've been reading with the causes being either the HPFP, carbon build up or perhaps the throttle body, but our mechanic says they are all fine. Love apple pie, but don’t have the time to bake it from scratch? These mini apple “pie” rolls are an easy alternative, great for lunch packing, snacking, and party hosting The Insider Trading Activity of Cooper Matthew W on Markets Insider. At cold start it fires and dies. 54 Plate R53 JCW Cooper S - Misfire only under loadneed some advice, last week I made a big mistake and slipped my Mini into 2nd at 85!! (not my usual style! ). On a cold start, the engine experiences a harsh rough stumble idle, it will log Misfires on all 4 cylinders, but more importantly after about 2 minutes, it clears up and no issues until "next cold start" or sitting for at least 8 hours. Driving it home I noticed, after a few miles of driving, that it was idling very rough when almost stopped and stopped. Low Fuel Pressure Best Auto Repair in Ninnescah, KS - S J Mechanics, Outlaw Automotive & Small Engine Repair, Mobile Diesel Mechanic Wichita, Lauer's Service, Wichita Mobile Mechanic, Gary's Automotive, DDM Mobile Mechanics, 316 Motorsports, Kinks Mobile services, L & M Auto Repair. This is normal, at start up the ECU runs the high pressure fuel pump (the whining noise you hear) and high rpm to heat up the catalytic converter, as the cat quickly starts to get up to operating temp there are mini combustion explosions of the unburnt fuel hitting the cat (the knocking noise you hear). It looks like it is temperature dependent as it will always start running right when it cools down at about 90C It never triggered any code for the misfire but it will trigger a 287D Vanos inlet actuator movement fault, but this is very rare. After several attempts it barely starts but does. For example, if the cylinder number 1 misfires in a 4-cylinder engine, it will run only on 3 cylinders and will have the code P0301, see the animation The code P0300 stands for random misfire. 2. 2013 Mini Cooper Countryman S. run two full tanks of gas with injector cleaning aditive. Jun 15, 2024 · Changed out the low pressure fuel pump as I thought fuel may be running back to the tank, or slow startup of the pump causing a bump on start up. shadman nuns Multiple misfires 1-4(random). could be a bad PCV line that runs from the valve cover to the intake. Smog check due ( California) please help!! Like. However directly after this I popped it back into 6th and. Try again, it starts and is rough like three cylinders are firing. Customer had a P0303 Cyl 3 misfire6L non turbo engine, 6 speed manual with 185k on the clock. May 1, 2012 · Numerous times over the past 112k miles, I've had weird misfire issues. 5d it only happens or struggles on the first start of the day though not a problem during the summer months. Jul 16, 2021 · In this week video we have a Mini cooper R56 cold start misfire FIX. View 14 photos for 336 N Ninnescah St, Pratt, KS 67124, a 1 bed, 1 bath, 640 Sq single family home built in 1920 that was last sold on 12/20/2021. Customer had a P0303 Cyl 3 misfire6L non turbo engine, 6 speed manual with 185k on the clock. Once the car warms up it’s gone. Whenever I turn on the engine it just drops straight down to normal idle revs of just over 500. fatal car accident houston saturday Ran smooth when cold then after warm up the check engine light would flash at idle and engine stumble. The ignition system and fuel injection play crucial roles in the operation of each cylinder. The ignition system and fuel injection play crucial roles in the operation of each cylinder. After several attempts it barely starts but does. Mar 15, 2012 · I asked them to check the error code and the throttle issue. I have gotten the half lit engine 2x. Every time its happened it has been wet and ive been though a puddle and it starts to hesitate and misfire and before long it throws up the. May 1, 2012 · Numerous times over the past 112k miles, I've had weird misfire issues. Recently started misfiring cylinders 1&3 when cold only. Every now and then the revs hunt up and down wildly, sometimes it cuts out. If you own a Mini Cooper, you know how important it is to keep it in top condition. Reving up actually helps a little bit as when it stalls or when it just cranks the rpm is around 500, while when it finally works alright is around. have only noticed the check engine light come on soon. it has also had new inlet manifold gaskets, timing chain and all the kit, and very recently a head gasket replaced. asira scans Jan 6, 2023 · This seems fairly common from what I've been reading with the causes being either the HPFP, carbon build up or perhaps the throttle body, but our mechanic says they are all fine. I have new oem coils, and new ngk iridium spark … This seems fairly common from what I've been reading with the causes being either the HPFP, carbon build up or perhaps the throttle body, but our mechanic says … Here's what I've done: Replaced spark plugs. Have you ever fallen asleep and been jolted awake in a panic? Here's what to know about mini panic attacks when falling asleep. As fall comes to a close, it's a great time to share a few hotel mini reviews. 2313 posts · Joined 2008 A code P0302 may mean that one or more of the following has happened: Faulty spark plug or wire Faulty coil (pack) Faulty oxygen sensor (s) Faulty fuel injector. 5 second loss of power on the same hill, a few times, intermittent. At cold the FRP is around 93. Under load while building boost from around 2000rpm to 2800rpm there's a misfire. still then it struggles. Jul 21, 2016 · My mini seems to be unhappy. Replaced cracked air intake Reset ECU. This car came from a friend garage which was scratting his head for about 6 months changing various part , vanos. Hey guys, I have a 2009 clubman S with 125k miles. It almost always comes down to wires or corroded terminals in my cases. If you’re the proud owner of a Mini Cooper, you know that it’s important to keep your car in top condition. My mothers R50 Cooper is having a misfire that I can't figure out for the life of me. Mar 15, 2012 · I asked them to check the error code and the throttle issue. stuttering throughout the rev range when booting it from down low (2500rpm up to around 4500rpm), and slight misfire/jumping engine at idle. Mini Owners of Texas (MOT) is a loosely knit "club" with no dues, no officers, and no real meetings but does have occassional gatherings in bigger Texas cities to eat, drink and discuss Minis.
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I've also purchased a USB scan tool with some software, so I can retrieve any diagnostic info the ECU is putting out. When it comes to the P0301 fault code, the most common cause is a faulty spark plug or faulty ignition coil. could be a bad PCV line that runs from the valve cover to the intake. About a quarter of the way up I notice a miss, almost like the transmission tried to shift but didn't. However, I still have a misfire when trying to accelerate from low revs, or when trying to use more than 80-85% throttle! May 29, 2012 · I am currently working with the local dealer on a cold start issue. A Mini Cooper can comfortably seat either two, four, or five passengers, depending on the model. It wasn't a problem initially but gradually got worse. After say 15-20 seconds, the SES light and DSC light both come on and the engine seems to smooth out a little bit and the idle raises to about 800 rpm, though still running with a pronounced roughness/misfire. Multiple misfires 1-4(random). #1 · Feb 3, 2022 (Edited) Hey up im Kev from Scotchland (not my fault lol) here's my motors. Installed new coils since I didn't have a spare. I have an automatic 2007 mini cooper s turbo and it has developed a starting problem. View FREE Public Profile & Reputation for Cooper Pierce in Cheney, KS - Court Records | Photos | Address, Email & Phone | Reviews | $100 - $149,999 Net Worth Jul 23, 2018 · P0300 is a random misfire which is not related to one cylinder only. At cold the FRP is around 93. 2008 MINI Cooper S w/ dealer-installed JCW package (chip tune, larger air intake, larger cat-back exhaust). She called me Saturday to say the engine management light was on and it was running badly. Rich running is caused by a fuel injector stuck open, a sensor giving the computer faulty information about the external or internal temperature, or several other fuel injection related issues. There can be many possible causes, so all need to be carefully investigated. In today's video we take a look at a 2009 Mini Cooper with a 1. Once started and warmed up (typically within one minute of driving) the car performs perfectly. Technician : Tyler Seawright (Master ASE Certified) Initial condition: check engine light on, hard starting condition and noisy engine. It almost always comes down to wires or corroded terminals in my cases. I've read a number of these forum threads, but they don't quite describe my problem. kobe autopsy drawing There can be many possible causes, so all need to be carefully investigated. Multiple misfires 1-4(random). Once it does start, I have to feather the gas to keep it running as it misfires. Then I turn ignition off and restart It should almost start stuttering within seconds of removing the cap. Dec 4, 2022 · 2013 Mini Cooper Countryman S. We usually have a Hill Country Tour once or twice a year, in the Fall and Spring. Discover the advantages and disadvantages of ductless mini-split air conditioners for your home. mini cooper s cold start problem. Try again, it starts and is rough like three cylinders are firing. Installed new coils since I didn't have a spare. Jul 16, 2021 · In this week video we have a Mini cooper R56 cold start misfire FIX. Also recently cleaned the intake valves and that did not solve issue. I have feeling like petrol is cut off. Have a little better fuel pressure, but still not solved. I have an 08 R56 MCS. Jul 26, 2023 · The Reno County Commission approved a motion to switch the official newspaper of Reno County from the Hutchinson News to the Rural Messenger on Wednesday morning at the county courthouse, citing that switching to another publication would save money on newspaper space and legal notices. Mini Cooper S R56 problem when starting, struggling to start, misfiring etc. 13325 flamingo crossings blvd Then, about halfway up the hill, the engine started shuddering/shaking and slowing down. Smog check due ( California) please help!! Like. Jun 2, 2017 · Here's what I've done: Replaced spark plugs. then reconnect the battery lead. Cooper s r53 2002 startup and misfire. I scanned it using ista and it was showing a misfire on cylinder 4 and an o2 mixture fault. Took it to the MINI dealer as I thought it could be the HPFP, but they managed to found. Changed the fuel pump and swapped the 3 and 4 coils. I've have a problem with my 2003 MINI Cooper that's causing it to hesitate and misfire. Jun 29, 2016 · A dark or wet electrode tip on the plug typically indicates a rich condition, or a bad spark on that plug. 2007 Mini Cooper S 1. firstly turn on the ignition not engine running, open bonnet remove battery positive lead and then turn off ignition. Sep 24, 2010 · My issue is right after startup, if I give the Mini some good hard revs, I actually see a drop, or a power suckout. This car came from a friend garage which was scratting his head for about 6 months changing various part , vanos. fleshlight com You cold have a bad PCV valve( part of the valve cover) that is leaky, could have a bad oil filler cap seal or its just missing. At cold the FRP is around 93. However, I still have a misfire when trying to accelerate from low revs, or when trying to use more than 80-85% throttle! May 29, 2012 · I am currently working with the local dealer on a cold start issue. I went to a trackday this Sunday and the car ran like a champ. I replaced all the coil packs thinking it was a misfire but that hasn't helped either. Multiple misfires 1-4(random). Dec 17, 2020 · I’m having the cold no start issue. I replaced all the coil packs thinking it was a misfire but that hasn't helped either. Mar 15, 2012 · I asked them to check the error code and the throttle issue. I attach an analyser and it tells me there is a cylinder 1 misfire. The traction control light comes on and the car misfires badly. Under load while building boost from around 2000rpm to 2800rpm there's a misfire. From reviews, mods, accessories, reliability concerns and more, this Mini Owners Club is full of info! Show Less. Full Forum Listing. The check engine light came on and giving a little gas it began to run properly. Jul 16, 2021 · In this week video we have a Mini cooper R56 cold start misfire FIX. Have a little better fuel pressure, but still not solved. I went to a trackday this Sunday and the car ran like a champ. There can be many possible causes, so all need to be carefully investigated. once its warmed up it seems fine.
Try again, it starts and is rough like three cylinders are firing. You cold have a bad PCV valve( part of the valve cover) that is leaky, could have a bad oil filler cap seal … I asked them to check the error code and the throttle issue. I have gotten the half lit engine 2x. 4 (peugeot engine) with a misfire on cold but when it warms up it runs like a dream. Whenever I'm doing a cold start (after leaving parked overnight) it will start up fine, then splutter and die quickly, it almost sounds like … It should almost start stuttering within seconds of removing the cap. fall decorated house I've also purchased a USB scan tool with some software, so I can retrieve any diagnostic info the ECU is putting out. This car came from a friend garage which was scratting his head for about 6 months changing various part , vanos. So about a year after I bought it (I've had it 2 yrs in Feb) every now and again. The only original parts in the engine bay are the inlet manifold, wiring loom and ECU. Once started and warmed up (typically within one minute of driving) the car performs perfectly. Like Sort by Oldest first M Discover the common causes of the P0304 diagnostic trouble code and learn how to troubleshoot a misfire in cylinder 4 of your engine. I have a 2004 Mini Cooper S, run rough, pulled the codes p0300 and p2304, inidcates random misfire, cylinder 4 (Random/Multiple Cylinder Misfire Detected) and P050D Cold start rough Idle 2008 Mini Cooper s, misfire on cylinder 3 code, replace the plugs and ignition coils and and code is back For throttle body relearn, turn the key to the on position but do not start the vehicle. night shift customer service jobs However, I still have a misfire when trying to accelerate from low revs, or when trying to use more than 80-85% throttle! May 29, 2012 · I am currently working with the local dealer on a cold start issue. The engine has the coils on the plugs, so no chance of a bad coil or bad wires. There is no engine light on and no fault codes present, Checked spark plugs with multimeter and according to that they are OK. Jul 16, 2021 · In this week video we have a Mini cooper R56 cold start misfire FIX. When it ideals it bounces between 575-780ish. I’m having the cold no start issue. west elm task floor lamp Try again, it starts and is rough like three cylinders are firing. 25mm would blow the spark out cause a misfire more so with hard plugs, if you have misfires when its cold live data fuel rail pressure you should have around 5mpa at idle , they will start. Aug 30, 2014 · I thought it could be a faulty temperature sensor/thermostat but checked the engine temp readings on cold start with my laptop and they were alright (no crazy values). Mini Cooper S R56 problem when starting, struggling to start, misfiring etc. Whenever I'm doing a cold start (after leaving parked overnight) it will start up fine, then splutter and die quickly, it almost sounds like it's not getting any fuel as it goes. The check engine light came on and giving a little gas it began to run properly.
Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 1. Learn the average cost and how each factor will affect you. It almost always comes down to wires or corroded terminals in my cases. A dark or wet electrode tip on the plug typically indicates a rich condition, or a bad spark on that plug. Low Fuel Pressure Best Auto Repair in Ninnescah, KS - S J Mechanics, Outlaw Automotive & Small Engine Repair, Mobile Diesel Mechanic Wichita, Lauer's Service, Wichita Mobile Mechanic, Gary's Automotive, DDM Mobile Mechanics, 316 Motorsports, Kinks Mobile services, L & M Auto Repair. I swapped the plugs and coils around but the misfire. Engine light issue has now been resolved but I have been told. Aug 30, 2014 · I thought it could be a faulty temperature sensor/thermostat but checked the engine temp readings on cold start with my laptop and they were alright (no crazy values). They have found a faulty knock sensor and are replacing. But after about 60 seconds everything is normal. Vehicle came in with poor idle and hesitation. :cornut: P0300 = random/multiple cylinder misfireplugs 2coil 4. Changed out the low pressure fuel pump as I thought fuel may be running back to the tank, or slow startup of the pump causing a bump on start up. Firstly after collecting from the dealership, I opened the bonnet at home to find the air intake pipe NOT connected (ie the pipe that directs cool air to the engine was. Jethro. 3 posts · Joined 2007 Apologies if this question has been asked before, new to this forum lark. Jul 26, 2023 · The Reno County Commission approved a motion to switch the official newspaper of Reno County from the Hutchinson News to the Rural Messenger on Wednesday morning at the county courthouse, citing that switching to another publication would save money on newspaper space and legal notices. How to repair a 2009 mini cooper that started misfiring? What is the most common cause for misfiring? I have a base mini 2007 and it misfires at start Throws coded p0300 p0303,p0304. When it ideals it bounces between 575-780ish. shirley couch american hollow Once started and warmed up (typically within one minute of driving) the car performs perfectly. This car came from a friend garage which was scratting his head for about 6 months changing various part , vanos. Low Fuel Pressure Best Auto Repair in Ninnescah, KS - S J Mechanics, Outlaw Automotive & Small Engine Repair, Mobile Diesel Mechanic Wichita, Lauer's Service, Wichita Mobile Mechanic, Gary's Automotive, DDM Mobile Mechanics, 316 Motorsports, Kinks Mobile services, L … The Reno County Commission approved a motion to switch the official newspaper of Reno County from the Hutchinson News to the Rural Messenger on Wednesday morning at the county courthouse, citing that switching to another publication would save money on newspaper space and legal notices. 7 posts · Joined 2017 Hi All6 Cooper and its developed a Misfire in Cylinder 1. When it ideals it bounces between 575-780ish. The check engine light came on and giving a little gas it began to run properly. ) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more. Random DSC & SES PO300 fault code but car runs smooth upon reaching operating temp. It's been experiencing a very sporadic misfire issue. The P0301 code means that the cylinder 1 is misfiring or is randomly misfiring. Try again, it starts and is rough like three cylinders are firing. Have a little better fuel pressure, but still not solved. A few mechanics say this car is done - one wants to charge me $7,000 to. Coils have yellow marking paint on them implying possible factory coils. If the problem persists more tests needs to be done to diagnose problem, see "Possible Causes". View 14 photos for 336 N Ninnescah St, Pratt, KS 67124, a 1 bed, 1 bath, 640 Sq single family home built in 1920 that was last sold on 12/20/2021. Hey guys, I have a 2009 clubman S with 125k miles. At cold start it fires and dies. Recently started misfiring cylinders 1&3 when cold only. Jun 2, 2017 · Here's what I've done: Replaced spark plugs. My Rpm struggles at times where it practically. deviantart tickle stories Low fuel misfire was a new code that i had not seen before also. Aug 30, 2014 · I thought it could be a faulty temperature sensor/thermostat but checked the engine temp readings on cold start with my laptop and they were alright (no crazy values). Current problems and behavior after re-assembly: the bad after this work: trouble code for cylinder 2 misfire. R53 Cooper S misfire/fueling issue (Help!) I've been having some problems with my R53 MCS recently. Once the car warms up it’s gone. But after about 60 seconds everything is normal. Engine still has exactly the same issue, mild tap at idle which seems to coincide with very mild regular misfire not picked up by scanner but causing vibration. It then clears and is ok. could be a bad PCV line that runs from the valve cover to the intake. Ensure that the spark plug is in good condition, with the. At cold the FRP is around 93. Mar 15, 2012 · I asked them to check the error code and the throttle issue. Burned exhaust valve. Misfire under load (SOLVED) This has been an ongoing issue with my car for years but I've never got to the bottom of it. Repeated P0304 Cyl 4 Misfire Jump to Latest Follow 618 views 1 reply 2 participants last post by MickeyMini Oct 1, 2023 J Jellobmw Discussion starter 5 posts · Joined 2022 #1 · Oct 1, 2023 P0302 DTC means that there's an engine misfire in cylinder 2. k-huevo Club Coordinator Misfire under load (SOLVED) This has been an ongoing issue with my car for years but I've never got to the bottom of it. It almost always comes down to wires or corroded terminals in my cases. k-huevo Club Coordinator Misfire under load (SOLVED) This has been an ongoing issue with my car for years but I've never got to the bottom of it. Nov 2, 2022 · #1 · Nov 2, 2022. Symptom when I first start the car is that it starts tries to hold cold idle revs and fails then stalls. After say 15-20 seconds, the SES light and DSC light both come on … Changed out the low pressure fuel pump as I thought fuel may be running back to the tank, or slow startup of the pump causing a bump on start up. My mothers R50 Cooper is having a misfire that I can't figure out for the life of me.