1993 Ford Ranger Pinging

1993 FORD RANGER
15,000 MILES • 4 CYL • 2WD • MANUAL
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DAVID PARKER
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My truck is a four cylinder with eight plugs. I have change the plugs. When I run regular gas my truck pings really bad. If I run high test gas it runs fine. What is the problem?
Jan 14, 2008 at 10:37 AM
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VIDEOTP
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Dave:
You may already know this but it totally seems like your timing is too far advanced. Loosen the Distributor clamp bolt and turn your distrubutor just a very small amount counterclock wise. then tighten the clamp again. Or get a timing light and set up to the engine specs.
Jan 14, 2008 at 10:54 AM
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