Questions tagged [misfire]
A condition where one or more engine cylinders experiences lack of combustion or mistimed combustion through detonation
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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 ...
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3answers
67 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 ...
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20 views
2014 Ford Mustang 3.7L V6 Bank 2 Lean on startup until engine warms up
I've been having an issue lately that has not always been the case. For reference, my car has an aftermarket air intake (AirRaid) and BBK Long-Tube headers w/ O2 sensor extensions, a catted X-pipe, ...
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37 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. ...
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25 views
Audi 1.4 TFSI EA211 Misfire cylinder 4
A short while ago I had an Audi Q3 1.4 TFSI EA211 in for a misfire and thought it would be an easy fix Friday afternoon failed Coil-On-Plug.
Coils all OK, sparking well on all, plugs all fine, ...
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13 views
Diagnose misfires before the ECU codes them
My 2007 Mazda 6 ran rough for months before the check engine light finally came on and the ECU set a code for misfires on cylinder 1. Replacing the coil on that cylinder fixed it and it was running ...
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1answer
184 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 ...
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2answers
57 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 ...
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2answers
79 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 ...
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1answer
60 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 ...
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1answer
77 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.
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1answer
48 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 ...
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1answer
64 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 ...
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13 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 ...
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1answer
62 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 ...
asked Nov 11 '20 at 10:46
RockPaperLz- Mask it or Casket
2,0479 gold badges25 silver badges49 bronze badges
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3answers
79 views
What does radiator water in the cylinder well indicate?
The vehicle was running fine last week.
Stood for a few days and then when put under load (flooring it) the 2nd cylinder was found to be misfiring.
Popped off the engine cover and removed the 2nd ...
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29 views
1996 Toyota Tacoma Random Misfire
I have a 96 2.4l tacoma that has right under 200,000 miles on it. Most of the time it runs great but randomly it starts misfiring. Only when it's up to operating temp but besides that there's no rhyme ...
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1answer
2k views
Can a bad timing chain result in only a single cylinder misfiring?
The question title should be pretty self explanatory. I have a 2002 Nissan Maxima which began idling and accelerating really poorly (seemingly out of nowhere) a few days ago while I was driving home ...
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45 views
Yamaha FZS 600 Faser - Losing a cylinder when hot
I recently bought a 1999 Yamaha FZS 600 Fazer. It was absolutely fine on the test ride. Did a couple of other short rides (about 20 mins), also fine. Then today after about 15 mins I lose a cylinder. ...
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1answer
180 views
2006 Buick LaCrosse misfire - Replaced coil pack, new plugs, new wires, 2x junkyard ICM. Still no luck
I have a 2006 Buick LaCrosse 3.8L that is misfiring. There is a strong smell of gas when running.
I have had this issue before and it was solved by replacing the ignition control module. I also ...
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1answer
940 views
Is it possible to clear “permanent codes” on a Volkswagen Jetta?
I was inspecting a 2011 Volkswagen Jetta today and saw on my OBD reader that it had two misfire codes, if I remember correctly P0302 cylinder 2 misfire and P0300 multiple cylinder misfire. The check ...
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117 views
Testing whether engine stutter/hesitation is caused by catalytic converter
I have a 2005 Ford Expedition, from my dad, which stutters and hesitates to accelerate. Sometimes it barely has a problem and sometimes it's bad. It has new spark plugs and spark plug coils which the ...
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1answer
642 views
Pros and cons of driving a vehicle with a misfiring cylinder
Check engine light came on for a Toyota Prius that is only being driven about once a month since COVID-19 pandemic began.
OBD-II scanner shows P0302, which indicates the problem is a misfiring ...
asked Jun 27 '20 at 1:53
RockPaperLz- Mask it or Casket
2,0479 gold badges25 silver badges49 bronze badges
0
votes
1answer
134 views
Feelin' a misfire but ain't showng no misfire in the computer
I swears when I turn on my van just sitting there I feel a misfire more often than any good person should. In my opinion, I shouldn't be feeling any weird shakin or nothin.
When she's been driven a ...
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45 views
Location of ims sensor or ifs sensor 2002 Hyundai santa fe
I have a 2002 Hyundai santa fe with the 2.7L V6 does this engine have a ifs sensor or ims sensor and if so where is it located on the engine.
The problem I am having is this, the engine will start ...
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1answer
170 views
Misfiring after not using car for one month
I have a Ford Focus 1.6 LX 16v 2004 MK1.
I went away for one month and after I returned the battery was dead.
I charged the battery, started the engine and took it for a short drive.
I noticed it was ...
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1answer
58 views
Code P2177, engine noise and power loss?
I have a 07 Mazda 3 and it seems like ita getting worst by the day. I have a check engine light on with the code P2177 System too lean, I'm pretty sure its losing its power when accelerating. I'll be ...
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1answer
209 views
2003 Toyota Corolla - Cyl Misfire + Lean Mix after month long storage. Possible causes?
I've not been driving my 2003 Toyota Corolla since we were ordered to shelter. Today, I turned it over and found it rough idling. ECU faults show as follow:
which reads:
Current Fault: P0303 - ...
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4answers
4k views
Spark Plug porcelain fell into cylinder
I own a 2016 Ford Mustang Ecoboost.
About a month ago, I had a misfire in cylinder 3. I Decided to just swap out all spark plugs, and only plug that gave me a problem to get out was of course #3. ...
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1answer
65 views
Cylinder misfires since having a full service on Golf MK5 2005
I took my VW Golf MK5 2005 (130,000 miles) to have a full service the other week which included changing all 4 spark plugs. Whilst driving home the engine management light came on and I lost some ...
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52 views
06 Chevy Cobalt: Low Power, Rough Idle (Misfires), now Water in Oil
Been driving it for two months now in cold Chicago weather.
-Car first was only experiencing weak acceleration and some minor engine "pulsating" at idle.
-On further probing during drive cycles with ...
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72 views
Sludge in the oil of a Subaru Forester
My Subaru Forester has 105k. For the past three years, I've had to add oil to it at an increasing rate. In the past few months, I've had to add a quart every week or two. I have recently found out ...
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254 views
Engine jerks at certain RPM - Misfire & fuel system over pressure [P000F, P0302]
My Audi A5 1.8t has started having some hiccups after an engine job (Changed valves, timing chain & camshaft intake side)
The car starts fine, it sounds fine, but it has the following problems:
...
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111 views
My hyundai Accent 2012 is having issues when accelerating
My hyundai Accent 2012 is having issues when accelerating.
It works great on low speed, but past 30kmh, if I accelerate more than regular cruising, the RPM will drop heavily and I can feel an heavy ...
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0answers
30 views
Can I learn anything about a misfiring cylinder from the fact that the dialectric grease around the plug is discolored?
On the way to the in-laws yesterday my 2008 fusion started bucking. Code reader says I'm misfiring on cylinder 2. I popped off the coil boots thinking I'd swap them and see if the problem cylinder ...
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2answers
5k views
Can lack of oil cause P0300 Random Misfire?
I get OBD code P0300 Random Misfire (and no other error codes) on a very poorly maintained car. I changed the valve cover (whose spark plug well gaskets were degraded) and spark plugs, but the engine ...
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1answer
92 views
I have a 2012 Chevrolet Camaro 2lt with a lot of problems
I have a 2012 Chevrolet Camaro RS and I'm getting a cylinder 6 misfire. I swapped the spark plugs because they were burnt, but I'm still getting a cylinder 6 misfire. I even checked the coil packs. ...
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2answers
1k views
Low compression in one cylinder with a misfire code, but no smoke in the exhaust
Chevy V6 4.3 with 281k miles. It recently threw a misfire code isolated to cylinder #3. The misfire seems systematic and not random, though, as it idles rough. I've got an open question on it already, ...
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0answers
289 views
Chevy Blazer 4.3 with p0303 error (cylinder 3 misfire) shortly after running medium-hot: now wonky idle, but smooth at high RPMs
I've got a 97 Chevy Blazer with the 4.3 and 281k miles. It might be of-note that a shop replaced my Lower Intake Manifold gasket about 18 months ago.
At the very end of a long trip this weekend it ...
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0answers
12 views
2010 GMC Terrain misfires & leans codes
My 2010 GMC Terrain while maintaining a speed of around 60 - 70 mph starts to hesitate and if I don't release my foot from the pedal I will get flashing check egine. I've noticed it likes to happen ...
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93 views
2009 Honda Accord 4-cyl
I changed the crankshaft. Now my car wont work when I give it the gas, it wants to shut off. Check engine light is on. Had Honda and another mechanic look at it montell me starter I think not I ...
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1answer
75 views
What causes P300, P301, P303 and P304 after driving several miles? 1999 Accord 2.3l
I have replaced the spark plugs, which were oily, cleaned the tubes, replaced tube seals (which were cracked), and have not seen oil leaks since, but the misfires persist. The wires are fourteen ...
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70 views
Does a puddle of Seafoam cleaner indicate a vacuum leak?
Engine is "skipping", cutting out or what seems like a misfire (?) every once and a while.
(Even more so when the AC is on).
To start, did the SeaFoam throttle body cleaner, as shown here:
How ...
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2answers
241 views
2005 Subaru Legacy Cylinder 3 misfire
My Wife's Subaru's check engine light recently came on, when we went to auto zone to check the code it came back as a cylinder 3 misfire, we went to our mechanic and he changed the sparkplugs, but ...
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1answer
82 views
P3431 P0304 but engine does not feature cylinder deactivation?
2010 Dodge Grand caravan 3.8L (I think)
CEL light came on and codes pulled were p0304 p0300 and p3431 , I'm curious as to what's up with the p3431. Looking it up on the typical obd sites say that it'...
3
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2answers
9k views
Narrowing down cause of misfire when engine is warm
2001 Toyota Tacoma 2WD 2.4L 4cyl. Just under 100k miles.
Looking for guidance on narrowing down the culprit for a misfire. Here's the pattern:
Truck runs fine from a cold start, and continues to run ...
0
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0answers
80 views
Huyndai sonata 2012 engine misfires
I have Huyndai sonata 2012 GDI 2.4 cc
The car starts just fine, but after few miles the engine misfires in the same cylinder, and when i stop the engine and run it again, the engine go back to normal ...
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0answers
144 views
Why does my NB Miata struggle to start when shut off for a short time?
Why does my 2000 Miata 1.8L (104000 miles) struggle to start when shut off for a short time? This doesn't seem to happen as frequently when starting up after being off over a weekend or just overnight....
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2answers
1k views
MAZDA 3 2006 (UK) - poor acceleration then takes off at 3250 revs
I have a 2006 Petrol Mazda 3 1.6, with 74k on the clock.
I have a problem where the car is really jumpy with poor acceleration when it is accelerating from 0 up to 3250 revs, it feels like it is ...
1
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1answer
175 views
Weird object in cylinder head preventing spark plug install
My friend has an 04 Acura TL (Engine Model J32A3). The car was loosing power and shuddering and the engine light came on. It appears that each cylinder is misfiring. Below is a screenshot of the code ...
