Hi all, I own a '87 Ford E150 302 V8. The problem is bucking while driving mostly in warm weather at cruising speed. Had a tune-up recently, replaced EGR, plugs, fuel filter, tank diverter. No problem in cold weather. Replaced sparkplug wires 2 years ago.
Any ideas? Joe
This isn't totally related, but I have a 4.9 liter inline 6 that had a similar problem. I used a restrictor plate between the egr valve and the intake manifold. Check it on on
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