Code p305, misfire on restart?

2007 CHRYSLER 300
235,000 MILES • 3.5L • 6 CYL • 2WD • AUTOMATIC
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RYAN M.
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  • 1 POST
Car misfires when restarted only never in morning when first driven. I can drive for an hour it doesn't happen only on restart and doesn't go away until next day when cold. Code p305 cylinder 5 misfire. Thinking I need new injectors most likely?
Jun 2, 2023 at 4:07 PM
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JACOBANDNICKOLAS
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Hi,

It could be related to the injector, but there are other things as well.

If you allow the engine to fully cool during the day, does it still have the misfire? I ask because it sounds like it is being affected by heat.

Try this. Switch the coil pack from cylinder 5 to a different cylinder. See pic below. Switch cylinder 5 and cylinder 3 coils. See if the misfire moves to cylinder 3.

Let me know.

Joe

See pic below.
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Jun 2, 2023 at 9:37 PM