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1998 Ford F-150

Question: engine missfires or knocks

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Visitor, 4.6L V8, Alexander City, AL, April 03, 2011, 20:06

engine missfires often,seems to be temperature or weather related.sometimes it runs and shifts perfectly and at other times it does not. but it seems to be temperature related.
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  • Answer #1

    DaveJHM April 03, 2011, 21:37
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     Master

    Start with base ignition items - spark plugs & wires. Ignition wires that are leaking spark intermittently could vary that leakage due to temperature and weather.

    An engine performance diagnostic test should really be performed.

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