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Re: Intermittent Misfires on Startup


 

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When you changed the plugs did you look at them to see any thing different about 3 and 5 plug, they are next to each other at back engine. ? Could be a leak and it burns off. ?Could pull plug on coil and turn engine over than pull plug to see if damp. ??

On Apr 16, 2021, at 12:06 PM, jeloomispe via groups.io <jeloomispe@...> wrote:

?My 2002 EVC runs rough on startup but runs great after a minute or two.? I have a check engine light and the following fault codes:
  • 16524-Oxygen (Lambda)Sensor B1 S2 P0140b -35 - 00 - No Activity
  • 16684 - Random/Multiple Cylinder Misfire Detected P0300 - 35 - 10? - Intermittent
  • 16689 - Cylinder 5? P0305 - 35 - 10 - Misfire Detected - Intermittent
  • 16687 - Cylinder 3? P0303 - 35 - 10 - Misfire Detected - Intermittent
Because it runs fine after several minutes many of the obvious causes do not seem to be the problem.? I changed the spark plugs but the problem still exists.? I would appreciate any input about a possible cause.

Thanks,
Jim Loomis
2002 EVC

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