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2001 Prizm - misfire cylinder 3

Replaced coil pack - still not fixed Replaced injector - still not fixed Any ideas on what to check next?

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  • Cars & Trucks Master
  • 3,103 Answers

Check compression see if it is good(check compresion on all 4 see if one is low) repost.....please

Posted on Jan 17, 2013

  • Roger Brant Jan 17, 2013

    Thanks, I'll look into compression. Also forgot to mention that I did have the MAF sensor cleaned and that failed to clear up the symptoms.

  • Roger Brant Feb 15, 2013

    Compression was good. Plugs were replaced and mis-fire went away. Should have started with plugs. Dang. Thanks for the help.

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Posted on Jan 02, 2017

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chuck943
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SOURCE: engine code p0307 cylinder #7 misfire

It could be carbon deposits on valve seats keeping valves from totally closing. You can try getting you a can of motorcraft PM3 top end engine cleaner and get engine up to operating temp then remove one of the small vacuum lines from the intake and draw the contents of the can slowly into the engine.After you have drawn in the contents shut engine off and let it soak for about 45 minutes then crank it back up and let it run until it clears. Now it will smoke like a forrest fire while you are doing this so don't be alarmed,just tell the neighbors you are spraying for mosqitos.This may cure the problem. If not you may be looking at a valve job.
This can be verified with a compression test if this is what is causing it.

Posted on Feb 05, 2009

  • 14036 Answers

SOURCE: 2000 Kia Sephia p0303 code engine misfires

do a compression test. cylinder 3 could have a bad valve lifter or valve.kia sephia dont have push rods.it have a bucket type followers.a intake leak to that cylinder can also cause misfire problems.

Posted on Jun 06, 2009

  • 144 Answers

SOURCE: 2004 Audi A4 misfire

it is always a good idea to stay with o.e.m parts and yes there is updated parts in the newer coils. and yes the M.A.F will also cause misfire faults but will not make check engine light flash or make car shake and shudder. also check you wire harness going to your coils make sure your ground wires are not cracked. That could be the main culprate. good luck hope this helps

Posted on Sep 03, 2009

roniecon
  • 6826 Answers

SOURCE: 2003 kia # 3 misfire/ runs rough

Replace the coil for number 3 cylinder.

Posted on Nov 11, 2009

  • 249 Answers

SOURCE: Dodge Caravan Fuel Injectors gone bad?

if you can get a good set of used injectors you should change all of them.

Posted on Nov 09, 2011

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