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1 cylinder misfires when the engine drops below 2000 revs. Checked HT on cylinder in question and spark looks satisfactory on tick over.

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Posted on Mar 14, 2011

  • Diether Masing
    Diether Masing Mar 14, 2011

    What is the exact car brand? Is the spark plugs are decent? Compare the different appearance of the spark plugs. What color is the spark plugs cylinder protrusions? These descriptions would help a lot of error was discovered. Does the error occurred suddenly or gradually?

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2 Answers

When i had the check engine light checked,misfire #3 cylinder have changed coil no change still misfire changed fuel injector,and spark plugs,no change now i am lost please help.


Try the HT lead on that cylinder by starting car in the dark and look out for spark coming out of that lead while running. Or get a spare lead and replace on that cylinder.hope this helps

Jul 08, 2015 | 2005 Nissan Altima

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Why does my Bmw 320i goes 100% but when stoping at a stop light for about 15 seconds the car revs start to change and when i pull off it fells like the car is riding on 3 cylinders, i then stop turn the...


Replace spark plugs and look at coils. Sounds like a misfire at idle. Car is trying to keep idle high enough with 1 or 2 cylinders misfiring. Car compensates then revs up as the cylinders catch and run again. These cars often have bad coils. Scan car and look for codes 301 through 306. Replace all plugs and if misfire comes back then replace the coils on the cylinders that occasionally misfire. Look at boots and spring wires on coils and replace coils that have bad boots.

Mar 16, 2015 | 2000 BMW 3 Series

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Reasons for cylinder misfires


Ford coil on plug systems are multi strike ignition (spark) under 1300 rpm then go to single strike a single cylinder misfire can be created by several things . #1 Test engine compression on a cranking engine compression it should be around 150 lbs but if gauge reads different COMPARE to other cylinders that work fine #2 check engine running compression this will be around 120 lbs then rev over 2000 rpm and check pressure drop again COMPARE to other cylinders that work fine. any drop would indicate valve train problems. #3 All internal engine is fine then external problems are present vacuum leaks and or fuel injection volume is low.

Jul 23, 2014 | 2003 Ford Thunderbird

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Hard engine vibration in toyota 2.2 engine at 1,000 rpms or less


run fault codes and look for misfiring cylinder. Vibrations are from engine misfires normally consistent with one cylinder . IT may be spark or HT lead or a faulty injector

Feb 14, 2014 | 1994 Toyota Camry

1 Answer

2000 acura tl shows misfire on all cylinders but car runs smoothly


check that the HT leads are separated and not touching each other. The misfire may be simply the spark being inducted into the plug with the least resistance and is random and that is what is setting off the light.

Dec 31, 2013 | 2000 Acura TL

1 Answer

Misfiring in cylinder 6 so i changed the plugs and now I'm looking at the fuel filter


have you checked the HT Lead? or if is the coil failure? Also check if there is not any fault on the previous - if the injector on that cylinder is working correct and not pouring the fuel.Since you removed the spark plugs have you checked if No:6 was wet or dry?

Jan 02, 2013 | 2001 Nissan Maxima

2 Answers

Multiple cylinder misfire


For engine misfiring problem check the help links mentioned below. Click the link below to go through the troubleshooting procedure :---- Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html

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Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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Engine Misfire codes for car?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

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Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

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Oil on spark plugs and car misfires?

http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html

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This will help.

Thanks.

Feb 09, 2012 | 2000 Isuzu Rodeo

1 Answer

Engine light on scanned p0300 po301 and another 1735 or 1755 or 1765 not sure but ignition coil ouput #1


P0300 indicates one of the following
Spark plugs,
Ht Leads,
Injectors.
ignition coil.
low compression
P0301 indicates one of the following on cylinder one
engine mechanical fault (low compression)
wiring.
ignition / fuel
injector.
ECT/MAF sensor.
ECM.

not that i need to tell you but you have a misfire on cylinder one, check the spark plug <> HT lead <> injector <> low compression, as the coil supplies a spark to all cylinders i would rule that out for now apart from a visual check,




Mar 18, 2010 | 2000 Volkswagen Beetle

1 Answer

Engine lopes while idling code 300 runs good driving


Hi there,

If your DTC code is correct, P0300 means: Random/Multiple Cylinder Misfire Detected.

As you have not indicated any codes from 301 - 306, then the computer has not been able to identify which cylinder misfired.

Therefore, you will need to begin checking for possibilities which could trigger the random (or multiple) misfire, which can be anything from:

- air leaks (this can disrupt readings on the engine's computer). Try spaying liquid around the inlet manifolds, check hoses etc for leaks.
- Bad coil (assuming engine has a coilpack)
- Bad or poor spark plugs
- Bad or poor condition HT leads (going to the spark plugs)
- Bad cylinder compression (compression test will confirm this)
- Leaking head gasket (this can also cause bad cylinder compression) - are you losing coolant from your cooling system?

These are just some possibilities...

Cheers,

Scott

Nov 12, 2009 | 2000 Nissan Altima

1 Answer

2000 Daewoo Lanos intermittant misfire trouble code


check fuel filter and check fuel for water or contaminents
then check fuel pressure with gauge also while driving
may have pin hole in leads - spray water with salt solution over HT leads while engine running and then rev to see or here spark jump(missfire)
recheck spark plugs - did you crack any on installation/removal/installation?
what are the codes and description if stored?
what is engine live data parameters like do they look normal (right specs for range/operation)?

Jul 27, 2009 | 2000 Daewoo Lanos

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