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Engine misfire when up to temperature 10 months 3 weeks ago #202374

2003 mgtf 1.8 135
Runs perfect until up to temperature then starts to misfire. If I disconnect the cam sensor it runs without missing albeit a little rich, the sensor and wiring from sensor to loom have been replaced!!!
Somebody please put me out of my misery!! Thanks Paul

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Engine misfire when up to temperature 10 months 3 weeks ago #202377

Failing coil pack gives that symptom, fine when cold but misfire when warm. These coil packs are prone to green corrosion (verdigris) between pack and extension. The extension down to plug just pulls off and can be cleaned. However when I had a misfire I changed coil pack/leads/plugs while I had access as I did nit want to take hood/engine cover off again.

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Engine misfire when up to temperature 10 months 3 weeks ago #202381

Thanks, I'll take a look at those, although I can't understand why it runs without misfiring with the cam sensor disconnected .
Cheers
Paul

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