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I have a 2001 2.2l s10 i changed the spark plugs and the wires and the coils but it still has a mis on cylinder 2

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  • 12 Answers

Missing has to do with the internal components... To temporarily fix the problem get a hotter burning plug to put in the cylinder that is missing

Posted on Jan 16, 2013

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P0302 mis fire, lacks power


Pull the spark plug of cylinder 2. Put the coil on the spark plug. Ground the sparkplug and have someone crank the engine. See if you see a spark. If you have no spark switch coils with another cylinder. If still no spark it could be one of the wires going to the ignition coil. If there is a spark do you smell gas at the spark plug hole? Could be no fuel to the cylinder.

Apr 22, 2014 | 2008 Ford Escape

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2003 TRACTOR 4X4 WAGON IS MIS FIRING ON CYLINDER TWO


Try to see if you can get view the are where the plugs are firing in the dark. Check for arcing off the plug or wires to the metal engine parts. I fought with a vehicle for days trying to determine a misfire problem on a car that we just put new plugs, wires, and coils on. Turns out the ceramic insulator on one of the BRAND NEW plugs had a hairline crack down the length of the insulator. You could not see if with the naked eye, but you could feel it if you ran your finger over it. Easiest to find if you can run the engine in a dark garage.

Nov 24, 2012 | Chevrolet Tracker Cars & Trucks

1 Answer

What causes a cylinder to mis-fire (or not fire, whichever is the proper term for it)? I went to a friend of mine's house who has a code reader, because the service engine soon light came on, and when...


is the code P0304?

just to clarify the passenger side of the engine compartment is the right side, the drivers side is the left side. I know it is backwards. It is easier to refer to the right/left as passenger/driver so everyone is on the same page.The cylinders from passenger side to drivers side are 1-2-3-4

I think the covers you are referring to are the coils. There should be two coils and two wires. The coils are usually held in place with a bolt(s). A 10mm socket is the normal size socket used to remove the bolt(s). Once the bolt is removed and the connector is unplugged you should be able to pull up on the coil and it will come out.

There are a couple of things you can check. The first thing would be two remove the spark plug wire from the number four plug. check for spark out of the plug wire with a spark tester (available at your local parts store) if there is spark than you may have an injector issue or a mechanical issue (possibly low compression).

If there is no spark than remove the spark plug wire from the coil and check for spark out of the coil. If there is no spark out if the coil than swap the two coils and see if there is spark. If there is spark than replace the coil without spark. I know that is a little confusing so if you need me to clarify a little I can, just let me know.

Let me know how that pans out. If you have any question let me know.

Oct 11, 2011 | 2003 Mitsubishi Outlander

1 Answer

Engine has a mis I have changed plugs & wires. Also two fuel injectors still has a mis


ENGINE MISS CAN BE CAUSE BY WEAK SPARK IGNITION FROM BAD COIL OR LOW CYLINDER COMPRESSION.

Jun 08, 2011 | 1994 Ford Bronco

1 Answer

Scanner said #4 cyl mis-fire changed #4 coil still reads #4 mis-fire any ideas


Replace the spark plug and if the problem still exsist replace the the ignition wire to the #4 cylinder.

Dec 01, 2010 | 2002 Ford Escape

2 Answers

I have a miss in my 98 ford f150 the trouble code shows up as misfire #4 and sometimes #5 cylinder what causes this


If it is a 4.2L or a 4.6L , it most likely needs spark plugs and spark plug wires. Please only use Ford spark plugs or it will not fun good after. After market spark plugs do not work too well in a Ford. After market spark plug wires can be used ok. If it is a 5.4L it has Coil On Plug which means each cylinder has its own Coil. If thats the case you may need 2 coils as well as plugs. Hope this helps. Cobra.. :-)

Jun 12, 2010 | 1998 Ford F150 Regular Cab

3 Answers

3.4 GM v6. dead skip on #4 cyl. Spark plug ok, wire ok, replaced injector. Still dead skip. Found cyl. by disconecting wires to injectors. #4 not affected.


The very first thing that you should do after finding a cylinder mis-fire that can not be easily explained such as a fouled spark plug, is to take a compression test especially of the mis-firing cylinder to be certain that the mis-fire is not caused by a mechanical problem, and I have seen people spend a lot of time and money trying to hunt down an electrical problem when the actual problem was a mechanical one, and no electronic part will repair a burnt or bent intake or exhaust valve.

Jun 06, 2010 | 2003 Buick Rendezvous

2 Answers

Code po304 #4 cylinder mis fire


ck if you have spark at the coil for that cylinder. check the plug wire closely. if it has spark at the coil, then replace all the spark plug wires.

Oct 12, 2009 | 2000 Cadillac DeVille

2 Answers

99 Expedition - Stutters and loses power when accelerating


My was doing the same thing, it was an EGR valve and a misfire on the #2 cylinder which required a new spark plug and a coil pack
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Mar 06, 2009 | 1999 Ford Expedition

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