Question about 1993 Ford F150 SuperCab

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My F-150 started running extremly rough and barely runs.

I checked the engine and noticed one of the spark plug wires was off the distributor so I reattached it and the truck starts but literally shakes it runs so rough. Could this be a timing chain problem? That's a wild guess from a friend. Thanks for your help

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  • roadway5 Jan 05, 2009

    I tried the solutions you suggested and while the truck runs better it is still rough. What I notice now is that there is smoke coming from the front drivers side spark plug where it actually threads into the engine. This really doesn't look good. Any other suggestions or advice would be appreciated.

    Thank you for your help

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  • 104 Answers

It seems unlikely it would be a timing chain issue. They are not really known for jumping and if it had jumped there would be other issues, not the least of which would be pistons crashing into valves if its an interference engine.

When was the last time a tune up was done? Perhaps new plugs, plug wires, distributor cap and rotor are in order based on the information you gave.

There could possibly be other issues, but based on what information you gave that is where I would start.

Posted on Dec 31, 2008

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1. Remove 1 spark plug wire from a plug. Hold near engine block while someone "cranks" the engine.
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