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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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How to electrically test Diamond FK0140 coil packs?

I have rust on my Subaru's coil on plug packs so thought to test resistance of the primary and secondary windings for all 6 coils to check for any inconsistencies. These are the Diamond FK0140 with a ...
ajayel's user avatar
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Same side multiple misfire jeep liberty 3.7 troubleshoot

All three cylinders misfire at the same time on the same side. What’s the reasoning?
cj blake's user avatar
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27 views

Engine misfires in drive at a stop but not in park

Why would my 4-cylinder 1999 Toyota Camry misfire in drive but not in park at a stop? It is not a constant skip just sometimes in drive. It is not getting worse maybe very very gradually. I am sure ...
Justintimeforfun's user avatar
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23 views

Coolant leak / engine overheat / cylinder misfire

Make: Honda Model: Civic 1.8L 2007 petrol Miles: 107,000 I have experienced cold air coming from heating system for a while - I probably should have addressed this sooner. Finally when driving ...
jsstuball's user avatar
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Can't diagnose consistent misfire 2005 Chevy Malibu

My 2005 Chevy Malibu has a misfire on cylinder 3. The symptoms are: Shaking at idle Knocking sounds as I accelerate, but only under load (sounds fine if I rev it up in neutral) P0303 engine code ...
Charlie Armstrong's user avatar
1 vote
1 answer
208 views

Misfire issue on a 2014 Infiniti QX 60

I have some issues with a 2014 Infiniti QX60 (3.5 V6) that the car repair show is unable to find. I have a misfire code P0300 (random misfire detected). Here are the issues with the car: Car is ...
Calipix974's user avatar
1 vote
3 answers
105 views

2000 Honda Accord misfires only some of the time. What is causing this?

It has a very odd pattern for when it misfires. You start it at the beginning of the day and it works perfectly. You drive it around, turn it off, let it sit for 30 minutes, start it again, and you ...
PythonN00b420's user avatar
1 vote
1 answer
29 views

Engine misfire, low gas mileage, click when gear change

I got a tune up, radiator and radiator hose, serpentine belt, starter and wheel bearing fixed. The misfiring, bad mileage and clicking noise didn’t start until after the tune up. What could be wrong? ...
Mrs. Nunez's user avatar
1 vote
3 answers
189 views

2013/Toyota/Corolla S: Check Engine (with codes), Rough Idle, Inconsistent temp. What am I missing?

As title states: 2013 Toyota Corolla S Had the check engine light come on just around a month ago and started idling rough. Pulled codes: P0301 (cylinder 1 has a misfire) and P219A (air to fuel ratio ...
dcp3450's user avatar
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Will alien component found in new engine tear down effect valve behaviour?

OMG, I might have found the cause of a misfire in cylinder 1 that has been the bain of my life on and off for 3 years. I have a 1979 sherpa van with an austin/leyland "o" series engine. The ...
Michael Sherpa's user avatar
2 votes
1 answer
366 views

Is it possible to have a good looking spark but but still not suitable for ignition?

I have a misfire on cylinder 1 unyet i have 4 great sparks with ignition timing and valve timing checked. I'm clutching at straws i know, but is it possible to have a long reaching spark bridging 20mm ...
Michael Sherpa's user avatar
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32 views

Is it possible to test an exhaust system for a restriction without dismantling it?

I've had an overheating problem with a new/other engine (1991) for 3 years now. Some time back I discovered that there was a misfire on cylinder 1 and maybe an intermittent misfire on cylinder 4. I've ...
Michael Sherpa's user avatar
0 votes
2 answers
125 views

Can i drive my 2016 Jeep Grand Cherokee 100 miles to a mechanic with a misfiring cylinder?

My 2016 Jeep Grand Cherokee started hesitating when accelerating, but only after the engine warms up. The testing tool says it's a cylinder 2 misfire. The mechanic I want to take it to is 100 miles ...
Emily Counard's user avatar
1 vote
0 answers
634 views

Misfire! Does good compression mean there are no valve issues?

I have a new old stock sherpa "O" series petrol engine 1991 that I installed 3 years ago. I have a misfire on cylinder 1 (detaching spark plug lead makes virtually no difference to the ...
Michael Sherpa's user avatar
1 vote
0 answers
33 views

1984 Lincoln Town Car EEV-IV Bucking

I am working on a 1984 Lincoln Town Car with EEV-IV throttle body injection. The car is entirely stock and extremely well taken care of, with all original systems on the car (air injection, EGR, cats)....
namezero's user avatar
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2 votes
1 answer
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The arm of my sparkplug somehow broke how concerned should I be?

I was driving my 2009 Toyota Corolla Ce on the highway today when my check engine light began flashing. So I got it towed back to my house for my grandpa to take a look at. He used a code reader to ...
jl2005's user avatar
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1 answer
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Will fixing first OBD2 misfire codes resolve the cascade of others downstream?

Looking at a car my kid wants to buy. 2012 Honda Civic LX. One owner, some service records, seemed to run fine in test drive. No colored exhaust gasses, no dashboard lights, sped on freeway, sudden ...
Stay-at-home-dad's user avatar
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36 views

Spark plugs 3 and 5 wearing out faster

Two of my spark plugs in my 2013 Town and Country are wearing out much faster than the other four plugs. I have changed the coils for 3 and 5, I have also changed the cam shaft sensor. When those two ...
Chris's user avatar
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1 vote
0 answers
208 views

Toyota Avalon Crank but won't start

Please, how can I fix this pending problem? Recently, a client called me to fix his 2000 Toyota Avalon car that cranked but wasn't starting. From the onset, the car experienced several mechanical, as ...
Paulo's user avatar
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1 vote
0 answers
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P0302 persists after fuel treatment, new spark plugs, and swapped ignition coils

Problem: P0302 Vehicle: 2011 Mazda CX-7 Steps taken so far: Replaced spark plugs Swapped coil packs to see if the misfire would move to another cylinder Added fuel treatment The car had an extremely ...
noobquestionsonly's user avatar
6 votes
1 answer
1k views

Should misfire counts be zero?

'07 Cobalt LS, 2.2 L I-4 Car is not getting a misfire code. (p030x) However, the mode 6 data shows Non-zero "misfire counts" on all cylinders. The counts are single- or double-digits, and ...
George's user avatar
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99 views

Cylinder 3 misfire after thermostat replacement valve

I have 2003 Ford Expedition that had the heater not working because my thermostat was broken open. I then got a code to replace the thermostat. I need to take a long drive so I took it to a shop to ...
Rgz's user avatar
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0 votes
1 answer
261 views

what causes a sienna to keep fouling spark plugs (misfire cylinder)

2005 Sienna, I occasionally get a p0304 (misfire cylinder 4) and engine runs rough. I found if I replace or clean the spark plug in cylinder 4, it goes away. For awhile. Then if I look in there, ...
rogerdpack's user avatar
1 vote
1 answer
1k views

P0300 code (random misfire, all cylinders) but only after cold start

The past couple of times I've started my car for the first time in the day, I've had a problem with the engine running rough and sputtering, and being really down on power alongside a P0300 code ...
el_zilcho's user avatar
1 vote
1 answer
74 views

Can I disable a cylinder on my 2009 Ford Ranger?

This is sort of a hypothetical at this point - I have a misfiring cylinder on my 2009 Ford Ranger 2.3L 4 cylinder engine. I'm trying to diagnose it, but am sort of preparing myself for the possibility ...
Adam Brown's user avatar
1 vote
1 answer
569 views

Misfiring cylinder - does the ECM disable it?

I have a misfiring cylinder on my 2009 Ford Ranger 2.3L 4 cylinder engine. I'll leave diagnosing the cause of the misfire to another thread, but I suspect it's related to retapping one of the spark ...
Adam Brown's user avatar
1 vote
1 answer
237 views

Spark plugs black soot Virago 250 - came back after cleaning and adjustment

My Virago 250 was running very unevenly, losing power, surging etc. I took out the spark plugs and saw the electrodes were covered in soot. I thoroughly cleaned the plug tips with a wire brush, ran ...
Clive Long's user avatar
0 votes
1 answer
728 views

Engine chugging while idle, misfires when accelerating and loss of power

When I was driving my Peugeot 407 petrol I suddenly experienced a loss of power. Luckily I was close to home and was able to drive the few meters back. When I started the car again the engine was ...
janlindso's user avatar
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Misfire still happening after a lot of diagnostic - Mechanic stumped

I have a 2014 Town and Country that has been at garage for 5 weeks now. It has a misfire issue on cylinder#2 at low idle (under 800RPM) Mechanic is stumped by this issue, as he states mechanically ...
Joe B's user avatar
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1 vote
1 answer
2k views

Misfire on Cyl 2 & 3, but doesn't (exactly) match TSB

2009 Honda Accord I found a TSB on a similar issue: TSB 09-050 My car exhibits the same symptoms others have had relating to the TSB, EXCEPT I only have the misfire codes: DTCsP0302 and P0303, but I'...
mlw19mlw91w's user avatar
0 votes
0 answers
20 views

1993 Cavalier 2.2 misfiring

My 1993 Cavalier 2.2 is misfiring on the #3 cylinder. A check of the spark plug showed a dry plug but still had spark. Ceramic was cracked so I replaced all four. Thinking the injector was bad, I ...
Bob's user avatar
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1 vote
0 answers
24 views

Car runs great until shut off then runs bad until shut off again

2008 dodge Avenger 3.5L 140,000 miles. Car runs great for however long I’ll run it for, until I shut it off for 5 to 15 minutes after it’s up to temp, then if I start it, it runs like shit, Has a ...
Klutch616's user avatar
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0 answers
792 views

Misfiring after changing spark plugs

2016 WRX Stage 1+BIGSF intake Dealing with a very annoying issue I CANNOT seem to figure out. Recently I've been tuning my car and figured changing the spark plugs would be a good idea. Ever since I ...
Adam Humphries's user avatar
1 vote
1 answer
2k views

Can a timing chain issue cause cylinder misfires on one bank, specifically the odd cylinders?

Make: Chevrolet Model: Camaro Year: 2010 3.6L v6 LT1 I am experiencing misfires on cylinders three and five. I have replaced spark plugs, swapped cylinder 2,4,6 ignition coils with cylinders 1,3,5 ...
Kaleb's user avatar
  • 13
2 votes
0 answers
54 views

more consistent spark by holding plug boot away from terminal

I've been trying to diagnose some misfire issues. I've noticed that just about each cylinder doesn't have consistent spark when hooking a timing light up to the plug wire. I figured I'd troubleshoot ...
dangelsaurus's user avatar
4 votes
2 answers
2k views

Volvo engine parts

What is the name of these four elements called? If water gets to them, can that cause a misfire?
John Mutuma's user avatar
0 votes
0 answers
97 views

Car runs "fine" only without camshaft position sensor

I bought a used Chevrolet Spark (aka matiz) with a 3 cylinder engine (F8CV engine) a month ago and I noticed some issues: difficulty starting the engine intermittent stalling when in neutral very ...
Chakib Baiker's user avatar
0 votes
1 answer
12k views

Engine misfire only when car is hot

I have honda civic 2011, now it works fine when cold startup and dont give much issues other then when I "accelerate a lot" and having done that for a while, the car starts misfiring. Now ...
BiologyEnthusiast's user avatar
0 votes
1 answer
146 views

Engine cylinder 5 misfire

On my Mitsubishi shogun sport van 2002 3.0L V6, There was a slight misfire on cylinder 5. We replaced spark plugs, all the HT leads (Ignition wires) and Ignition coils (all 3). That didn't solve our ...
Dylan Bracey's user avatar
1 vote
3 answers
180 views

Subaru Forester - petrol coming out unlit in bursts out exhaust. Ideas on what could cause it?

I've got a Subaru Forester '02 2.5L that I push kind of hard off road on New Zealand beaches. I had a near dead battery recently so bought a new one but on replacing it I must have wiped the ECU ...
Jesse Reza Khorasanee's user avatar
0 votes
0 answers
292 views

Can a stretched timing chain cause an issue in only one cylinder

I have a 2003 BMW 318i and had issue saying misfire on cylinder 4 only. Replaced spark plugs, coil packs, injectors tested and also compression tests done on cyclinders 1 and 4 and all came back fine. ...
Jay's user avatar
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5 votes
1 answer
839 views

Can swapping ignition coils fix a cylinder four misfire?

My car was having power issues so I took it to the mechanic who said cylinder 4 was misfiring. He came back to me and said he swapped the ignition coils over and rescanned with no misfires and told me ...
AnaruNZ's user avatar
  • 53
-1 votes
2 answers
370 views

I have at least 3 misfiring cylinders on my 2012 Corolla

I have a code reader and it told me cylinders 1, 2, and 3 are misfiring. I also have and older battery and have been told it needs replaced because its low voltage. I have also been told I need a ...
msdelesde's user avatar
2 votes
2 answers
2k views

Will a cylinder misfire immediately fire the check engine light?

A family member is claiming their 4cyl engine on a 2000 Chevy S10 Extreme LS is misfiring. However we're not seeing a check engine light. Wouldn't that automatically trip the check engine light for ...
jxramos's user avatar
  • 1,860
0 votes
1 answer
447 views

Is my exhaust causing misfire or did misfire burn the exhaust?

I hope to not be too vague as I don't know a lot about cars. I recently purchased a 1.2L Fiat Punto II 2005. It has trouble with a rough idle, a power drop off around 4krpm when accelerating and a ...
Jordan Fagan's user avatar
1 vote
1 answer
273 views

Elusive cause to a lumpy idle

Having been around cars for a long time, this has me stumped. 2005 Renault Megane Estate with 1.4 K4J engine. Approx 125 000 km. Engine is restless at idle. Revs are unstable and feels like misfiring. ...
eerik's user avatar
  • 21
0 votes
1 answer
92 views

Misfire at idle

I have a 97 Montero sport with 2.5k miles on the engine(it’s remanufactured). I’ve been chasing a p0305 for 2 years but can’t find the problem. I know I have a possible vacuum leak since the fuel ...
Ramon Villarruel's user avatar
0 votes
1 answer
628 views

Ford Ranger low RPM misfire?

2000 Ford Ranger 3.0L 2WD. I'm having a tough time figuring out if it's trans shudder or a misfire but leaning towards misfire at this point. The rumbling really starts to happen during converter ...
Derek's user avatar
  • 271
0 votes
0 answers
47 views

2012 nissan sentra

HelpI was driving down the highway and out of nowhere my car starting shaking real bad and acted as if it was struggling to move when i hit 60 and then struggled the whole time after that to get it ...
Drei Wilson's user avatar
1 vote
1 answer
115 views

What is typically involved to repair a internal combustion engine that has a cylinder misfiring?

I have a vehicle with a cylinder misfiring (according to my OBD-II code reader). I have decided to have a mechanic repair it, as I have never performed a similar motor vehicle repair. Note that the ...
End Antisemitic Hate's user avatar

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