Question about 1981 Ford F 150

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I have a 1975 f150 truck with a 390 motor I am puting in Bosch r6 plugs in what shoud my gap be

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I had a similiar problem with my 75 f150 ranger xlt 6.4 l 390 v8 (the camper special!) all i did was check mty cylinder pressure rebuild/clean out the carb and replace my fuel pump... the problem was a mix of all three for me but could be diferent for you...i ha da dead cylinder which made my engine sound and run like **** but the carb was dirty and rust was clogging my fuel pump, but a little machining on the cylinder a rebuilt carb and new fuel pump and my truck is now running like a true champion...Good Luck but get a real mechanics opinion if anything is needed further or misunderstood

Posted on Mar 27, 2012

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Let me know if this help.....

I have a 1975 f150 truck with a 390 motor I am - 6305260.jpg

Posted on Oct 06, 2009

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