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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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5 votes
1 answer
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Toyota 4Runner - automatic (Old model ) misfires and delay in changing gears. What is the problem?

My Toyota 4 Runner (old model) misfires and seems lazy especially while climbing hills. There is also a delay in changing from gears 2 - 3 and 4. Can someone please help to advise? Thanks in advance.
Paul Damba's user avatar
4 votes
0 answers
2k 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 ...
David Rogers's user avatar
4 votes
0 answers
73 views

1st and 2nd cylinder not combusting in dual carburetor'red setup

So I have a Maruti Esteem engine with a dual carburetor on an engine dyno and everything was already installed when I joined this lab. We seem to have a problem when trying to fire the engine. 1st and ...
Vish_evo's user avatar
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4 votes
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92 views

03 chevy impala- I have a bad misfire

When I push on the gas it hesitates to go. The check engine light starts flashing but once it gets rolling its gone. I change the spark plugs, put in a gas treatment, shot some B-12 in it and ...
Dexter Estes's user avatar
3 votes
0 answers
259 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....
Nobody Special's user avatar
3 votes
0 answers
288 views

1997 s10 4.3 misfire/dead cylinder

I have a 97 s10 4.3 W vin with 273k miles that sat for 3-4 years due to a bad clutch. Recently replaced the clutch and fuel pump got it running and the #5 cylinder was dead no spark replaced all 6 ...
Jod's user avatar
  • 101
3 votes
1 answer
9k 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 ...
JDubya's user avatar
  • 113
3 votes
0 answers
884 views

P0302 error code Nissan Primera p12

I own a 2004 Nissan Primera P12 with the 1.8 litre. My car MIL started glowing for two weeks. I read the code it was P0302 which is misfire in cylinder 2. I checked ignition coil and spark plug. I ...
VidhyaSagar's user avatar
3 votes
0 answers
219 views

Jet Boat, Cavitation or Misfire?

My jet boat is making a 'putting' noise when trying to accelerate. You can find all details regarding my boat here: My Boat Info The noise seems to happen in the mid-rpm range; 4,000 - 4,800 RPMS, ...
Calvin's user avatar
  • 489
2 votes
0 answers
55 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
2 votes
1 answer
1k 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 ...
a person's user avatar
2 votes
0 answers
503 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: ...
user avatar
2 votes
0 answers
53 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 ...
Nick Speten's user avatar
2 votes
0 answers
55 views

Clicking sound in engine, very strange evolution

I have come here in hopes to get some help regarding my impala. It is a 2006 Chevy Impala with a V6 engine, I was out of town for 2 weeks and when I got home I got in my impala and stated her up. it ...
Teee Meep's user avatar
2 votes
0 answers
107 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 ...
Randy Rossi's user avatar
2 votes
0 answers
218 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-...
DDS's user avatar
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2 votes
0 answers
63 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. ...
Sandra Jurek's user avatar
2 votes
0 answers
991 views

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 ...
seizethecarp's user avatar
2 votes
0 answers
54 views

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 ...
Hannah C.'s user avatar
2 votes
0 answers
2k views

Sudden Random Misfire and Stalling RX300

Preface: This is my sister's car, so I was not there at the moments leading up to it misfiring and stalling, but I'm the one who gets to fix it. It's a '99 Lexus RX300, and about a month ago I ...
Lathejockey81's user avatar
2 votes
0 answers
597 views

Fiesta 1.4i lx Zetec engine 2002 model Mk6 - Misfire on cylinders 1 & 4 only

Fiesta 1.4i lx Zetec SE / 1st reg 2002 / manual Hi There, I have just cleaned and replaced the throttle body and renewed the spark plugs, coil, air filter and HT leads and on start up the vehicle now ...
Magill's user avatar
  • 21
2 votes
0 answers
81 views

My megane 1.6 2005 is running poorly

My megane just started running poorly miss firing , loss of power and a horrible fuel smell got it on a diagnostic machine it said camshaft position sensor .Ive just replaced that and its still ...
Alisha Hood's user avatar
2 votes
0 answers
67 views

09 ford f-150 misfire cyl.5 and 7 only has spark and pulse only went is hot

this hapen after drive the truck for 10 to 20 minutes went stop star misfire at idle only 5 and 7 cyl. has spark and injector pulse if i race the rpm couple time the engine star run normal again
user21672's user avatar
2 votes
0 answers
1k views

peugeot 207 cc depollution system faulty when roof down

My wife's peugeot 207 cc is showing "depollution system faulty" and the engine management light comes on but this only when the roof down, also seems to be missing on a cylinder ???? I also borrowed ...
simon's user avatar
  • 21
1 vote
0 answers
25 views

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
  • 484
1 vote
3 answers
114 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
30 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
194 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
  • 111
1 vote
0 answers
65 views

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
1 vote
0 answers
658 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
  • 109
1 vote
1 answer
52 views

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
1 vote
0 answers
215 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
  • 11
1 vote
0 answers
46 views

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
1 vote
0 answers
36 views

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
  • 11
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
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
1 vote
0 answers
181 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. ...
ben_re's user avatar
  • 111
1 vote
0 answers
171 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 ...
Ken's user avatar
  • 11
1 vote
0 answers
426 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 ...
larin555's user avatar
  • 139
1 vote
0 answers
35 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 ...
Sidney's user avatar
  • 1,090
1 vote
0 answers
1k 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 ...
elrobis's user avatar
  • 391
1 vote
1 answer
124 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'...
David Scheiber's user avatar
1 vote
0 answers
48 views

2000 Jeep Grand Cherokee 4.0 200k miles - 02 Sensor and cylinder 5 misfire code come on at the same time

People keep telling me it can't be an 02 sensor, and other people keep telling me that an 02 sensor has given them a misfire so I'm not sure what to do. I've replaced the plugs (old ones were in bad ...
Duramax Daddy's user avatar
1 vote
0 answers
429 views

Cyclinder 2 misfire error code - 11 Dodge Journey 3.6L V6

2011 Dodge Journey Mainstreet 2wd 3.6L V6 100k miles Check Engine Light on, first read Low Voltage replaced Battery Check Engine Light came back on, 2nd read Cylinder 2 misfire, & Thermostat ...
EJAM's user avatar
  • 11
1 vote
0 answers
251 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 ...
Gots's user avatar
  • 11
1 vote
0 answers
233 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. ...
john's user avatar
  • 11
1 vote
0 answers
29 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 ...
steve's user avatar
  • 11
1 vote
0 answers
7k 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 ...
Sweetie's user avatar
  • 11
1 vote
0 answers
40 views

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?
user37426's user avatar