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Sporadic running

Toptech49

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Mar 6, 2019
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My 1994 f-150 in-line 4.9 starts and runs great but regularly appears to misfire. I can get it to run good again when I rapidly switch the ignition key on and off. This works well for a while but the issue keeps coming back. It seems to happen more when the air temperature is warmer. I hope someone might have some good ideas.
Thanks
 

65 sporty

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Does it quit? Any check engine light? So many possibilities that can be causing your issue. Have you done anything to it yet?
 
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