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Questions tagged [misfire]

A condition where one or more engine cylinders experiences lack of combustion or mistimed combustion through detonation

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1998 4Runner 2.7 Misfire with DTC P0171, P0300, P0301 , P0304

While driving on the highway, suddenly the CEL started flashing and the truck started msifiring, I got off the highway and retrieved a P0171, P0300, P0301 , P0304. I shut it off and waited for a few ...
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2009 Chevy Avalanche #6 Cylinder misfire

I've read about the way the system works to shut off V8 to V4. 6 is one of those valves. Truck is running really rough when idling. Gas mileage is reduced. Can only #6 misfire? If so, how to fix? ...
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30 views

Engine misfire since long time

I have a 2004 4x4 car petrol 3.0 . It was gas and petrol used. Current km is 200,000km Issue km is since 170,000km Car hesitate to start or start then straightaway stall. Normally cranking is ...
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20 views

2013 Subaru WRX P0300

On a Subaru 2013 since 70,000 miles I've had the fun P0300 code activated and my check engine light on, cruise and traction control disabled. I do not have any other misfire codes being shown(unlike ...
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1answer
28 views

My 1997 lancer jerks when accelerates and shakes when idling

i got a big problem, I have a 1997 Mitsubishi lancer, with a 1.6 liters engine, a 4g92 to be exact, and when Its idling it keeps shaking, the exhaust sound like there are little misfires, but no check ...
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9 views

Rpm rev r129 problem

I have a 1994 r129 (sl500) which i have had for 2 years and runs just fine. Milage is 110k Km. Last month, the car was in P and I was fixing some interior parts when the car started shaking heavily, ...
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32 views

Car Jump Started in wrong way

We switched the jumper cables when trying to jump start my Altezza 4 cylinder. Main fuse and other fuses were blown. I replaced all the damaged fuses and battery. When we eventually got the car to ...
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10 views

Nissan patrol ecm code giving on a fcar scanner

The problem that the car has misfire while engine is running The mechanic said that we need to change ecm And the electrician said that we need to change the engine.
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1answer
33 views

Misfiring and loss of brake power

i have a 2004 VW Golf 4 which misfire and brake loss of power. i have bunch of codes which i don't know how to go forward. the codes are; 18321, 18034, 18020, 18014, 17839, 17924, 16725, 17580, 17952. ...
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43 views

Renault Megane 1.4 will not start

2003 Renault Megane 1.4. Will not start. Code reader gave message that cylinder 4 misfiring, but have replaced it and also pencil coil. Zeroed the code reader. Checked fuse box - no corrosion/grease. ...
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16 views

1996 Jeep Grand Cherokee misses on the highway, not on surface streets

My good old Jeep Grand Cherokee, 1996 and original owner with 274,000 miles is, the last few days on the freeway only, missing and semi stalling. No check engine lights, all fluids etc. are fine. I ...
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63 views

Misfiring problems

I have 98 Sliverodo 5.7 vortex. It ran hot on me and I was told it was my head. Well turns out that it was an intake gasket. So I replaced the head and intake gaskets. Once I put it all back together ...
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28 views

Engine misfire on a cold day

I was on a ~300 miles trip and it was definitely below 50 degrees. I stopped to have a snack and a refill. During the stay I turned on the heater which was previously off. When I moved again, after ...
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2answers
155 views

Motorcycle lost power during hard acceleration, made sneezing/popping noises, now won't start

I was riding my 2017 Husqvarna 701 Supermoto hard for about an hour today when all of a sudden the bike started losing power during hard acceleration. I first noticed it when I tried to power wheelie ...
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1answer
111 views

08 Suburban misfire

My 08 Suburban is running really rough. The engine light says multiple misfires. I've changed the plus wires and coil packs but it still does it. The info screen says to service traction control and ...
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1answer
115 views

07 Dodge Caravan with 3.3 cylinders 3 and 6 misfire

I have a 2007 dodge caravan with a 3.3 with a misfire on cylinders 3 and 6 ( no spark coming from coil to plugs on cylinders). I have changed the plugs the wires. The coil twice and the crank sen. I ...
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23 views

Another puzzled 3.8 L owner

I too suddenly experienced a change in idle. Especially with the ac running. Obviously performance was hindered but it would run if i feathered it. (in motion) No check engine light so I assumed it ...
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989 views

Did I completely ruin my engine from driving with no oil?(video)

I have a 2004 elantra, not sure how many miles are on it because the odometer has been broken since I got it four years ago but I'd say it's over 200k. It's a car that needs a lot of upkeep and I've ...
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1answer
153 views

MINI Cooper limp mode without a CEL

Yet more strangeness with my 2008 Cooper S. Limp mode comes on almost immediately after starting the car for the past few days. This displays a half-filled engine icon on the dash and greatly limits ...
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1answer
40 views

1996 Ford explorer XLT 5.0

My explorer has what sounds like implosions or miss fire's in the intake when taking off and wants to stall and will stall when I come to a stop can anyone help. Some times runs rough some times runs ...
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Persistent miss on cylinder #2

Dodge 2004 Grand Caravan 3.8 motor. Changed plugs, wires, coil pack. #2 cylinder not getting spark. Where should I look next?
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3answers
373 views

2008 Ford Crown Vic Police Interceptor misfire on cylinder 2

I have been trying to track down this problem for the last week and it is driving me crazy. Hopefully some of you could shed some light on this situation. 2008 Ford Crown Vic Police Interceptor with ...
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182 views

1996 Starlet 4EFE EP91 miss at low throttle

At around 1800-2000 RPM mark at constant speed or when accelerating slowly with very low throttle input, the car jerks slightly, almost like a very light misfire/surging. If you give it more gas, it ...
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1answer
1k views

Rough idle and 02 sensor voltage drops to zero, cylinder 2 misfire

Vehicle is a 2007 Dodge Nitro R/T with a 4.0L engine. I've had a lot of trouble diagnosing a cylinder 2 misfire and looking for help on next steps. Symptoms After engine is warm, stop and go ...
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63 views

Peugeot 207 2009, issues with LPG

My 207, since about a year, is having some troubles 'passing' to LPG. It starts regularly on petrol then, as soon as the ECU switches to LPG, if I'm not pushing on the gas, it shuts down. My work-...
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1answer
72 views

Third misfire code on different cylinders in two months

I have a 2002 Mazda MPV with 133,000 miles. Two months ago, my mechanic replaced the ignition coil on cylinder 4 due to a misfire. Two weeks ago, he replaced the coil on cylinder 6 due to a misfire. ...
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2answers
383 views

Help identifying misfire conditon on 1998 Honda Civic DX

I'm struggling to identify the cause of a misfire condition in my 1998 Honda Civic. It has D16Y7 engine with 185,000 miles on it. The spark plugs, wires, distributor cap, rotor, and ignition coil ...
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387 views

Corsa D 2009 1.4 Petrol judder/lose power under load, rough idle

I bought a second hand 2009 Corsa D (68K miles) a few weeks ago, it drove perfectly for the first couple of weeks and this week it gradually started to stutter/judder under load/acceleration, usually ...
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34 views

Changed radiator and hoses on 97 Toyota Tacoma now check engine light on

After getting new radiator and hoses on 97 Toyota Tacoma check engine light came on. Diagnostic said misfiring changed all plugs and old coil wires light came back on, diagnostic says #6 misfiring. ...
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1answer
54 views

Diagnosing silent misfires

2003 Honda Civic EX (~230,000 miles) has been giving me misfire codes for a while, mostly on cylinders 2 & 3, but sometimes 4. P0300 Random cylinder P0302 Cylinder 2 P0303 Cylinder 3 P0304 ...
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4answers
3k views

Trying to Understand Post Cat O2 Behaviour During a Misfire

I've been researching using pre and post cat O2 waveforms to diagnose misfires and ran across this quote from the article, Intermittent Engine Misfire Analysis: Keep in mind that the downstream, ...
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1answer
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1993 CAVALIER 2.2 engine misfire

My Cavalier appears to have a misfire on cylinder 4. A compression test gave readings of 120, 120, 122, and 60 suggesting a loss of compression on that cylinder and the spark plug keeps fouling with ...
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3answers
737 views

Black Spark Plugs that Clean Themselves

Vehicle: 2002 Mazda Protégé LX, 2.0L engine, automatic transmission, 240,000 km Recent Work: Thermostat replacement Symptoms: Owner reported that the car shook and stalled on startup. She parked ...
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misfire only on startup - 2008 Chrysler 3.3 V6

2008 Chrysler Town & Country, 3.3 flex fuel V6, 170k miles. Random misfire code, shaking upon startup and very bad with no power when it's put in gear, stops happening after I get going, like ...
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1answer
680 views

Cause for a P0306 misfire code on a 2002 Toyota Sienna?

I have a 2002 Toyota Sienna van with 153k on the car and 81k on the engine, which had been rebuilt at 72k under warranty. I had been getting P0171 & P0174 codes on it, so  I replaced the gas cap ...
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72 views

2005 Mazda Premacy mid range stutter, hesitation

I have a 2005 Premacy that has developed a mid range stutter or hesitation. 150k and regularly serviced, though by a local mechanic, not a Mazda dealer. It threw a fault a week ago, P2177, which I ...
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44 views

Cylinders misfiring

I have a 1999 Buick Lesabre Custom that I've had for about a year now and about a month or two ago the check engine light came on and it's been flashing. I got it diagnosed and it said spark plugs and ...
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2answers
875 views

2002 Jeep Liberty 3.7 MISFIRE multiple cylinders

2002 Jeep Liberty with approximately 130,000 miles. Engine is misfiring on multiple cylinders. Burnt wire smell and smoke coming from firewall area. After troubleshooting, I believe the engine is ...
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1answer
38 views

99 chevy misfiring on 6th cylinder

I have 99 chevy silverado misfing on 6 cylinder plug was loose so tighten it down . STill rough idle what should i do? Should i replace plugs and wires? I had a computer put on it and code said ...
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2answers
66 views

engine performance problem

My question is about my 2004 saturn ion 2.2L. Engine misfires and looses power intermittently. I plugged the code reader and gave me PO341 (camshaft position sensor A circuit range performance (bank 1 ...
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1answer
52 views

Merc C220d misfire at revs above 2000 rpm

Ok I need help. My merc C220d w203 is having a proble it feels and looks like a misfire. It happen constant when I rev above 2000rpm to 3000rpm. Once the engine drops back to idle it take it from 5 ...
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23 views

Truck only miss fires when it gets up to temp

07 GMC Sierra 1500 5.3 engine - it radom misfires after it warms up. I have changed 1 coil pack, map sensor, plugs, and wires. It only does it after warming up to temperature. What might be the issue.
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148 views

How come my car won't idle after i changed spark plugs?

My 2001 Durango will start now that I replaced the misfiring plugs but I can't get it to idle, it just shuts off...any ideas?
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3answers
129 views

Is hot desert weather the source of my recurring car problem?

I have a 2004 ford ranger with a short history of problems...the engine is v6 3.0L OHV. 1) It died 2 summers ago, stopped right in the road, around noon in the middle of July. I live in Tucson so it ...
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0answers
2k views

Misfire in cyl 7 on 2007 Suburban 1500 4x4 with 5.3 L flex fuel LTZ

2007 Suburban 1500 4x4 with 5.3 L flex fuel LTZ 267,000+ miles. Having trouble with running rough and misfire. The ODB II indicates P0307. Checked wires - replaced though nothing is wrong, no ...
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2002 Nissan Quest breaking down

I was given the vehicle after it had sat for over 7 months. It sat with 3/4-1/2 a tank of gas. It was not cranked once. It is now idling and running very rough. It doesn't want to accelerate and when ...
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2answers
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The Mystery of the Misfiring MINI

It's me again. 2008 MINI Cooper S w/ dealer-installed JCW package (chip tune, larger air intake, larger cat-back exhaust). I thought everything was fine after resetting my ECU last week, but had bad ...
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1answer
322 views

Does a lean misfire smell like unburnt fuel?

I'm trying to track down a misfire, and it unfortunately wasn't the obvious stuff like plugs or wires. I'm trying to figure out why the misfire is occurring (to much fuel, not enough fuel, not a ...
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35 views

'02 Chev 4.8L random misfire 6&5 cyl 6 more than 5 after 2500 rpm 5 quits & 2 starts

I rebuilt the engine, wouldn't start replaced computer but was the new faulty crank position sensor. New intake, plugs, wires, coils, another cam position sensor. Loosen the rockers on 6 to see if cam ...
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1answer
5k views

Black water from exhaust, cylinder misfire and rought idle

It is a Skoda Fabia 2006, petrol, 3cylinders 1.2L. Main problem: Rough idle. Misfire at random cylindners. Steam, Water and black carbon from exhaust. (I'm sure it is not normal). Undrivable. ...