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willtel willtel is offline
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Join Date: Feb 2008
Location: Marietta GA
Posts: 2,567
I had similar issues with my '87 a few months ago. Mine would break up under high load and boost but drove normally most of the time, on one trip it was bad enough to feel like a steady misfire and I decided to park it. To correct it I ended up replacing the plugs, distributor cap, plug wires, and rotor. I also replaced the vacuum line running to the waste gate and sealed all other vacuum connections with new lines and tie wraps. I then removed and replaced the seals on the intercooler (mine is a B&B). It runs much better now, good smooth power all the way to redline.

Here is my thread, Breaking up and stumbling under boost
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1987 GP White 930
1977 Ford Bronco

Last edited by willtel; 03-09-2009 at 05:40 AM..
Old 03-09-2009, 03:23 AM
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