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Re: Rough Idle
I replied to this elsewhere as a possible burned plug wire and that you should try to isolate the misfiring cylinder. I would replace all the plugs just to rule them out, check the wires and distributor cap, pop off the cap and give it a good look for cracks and carbon up in the tower section.
If you can find out which cylinder it is and everything else has not worked, remove the one valve cover and look for a possible cracked rocker arm, those do fail under hard sudden acceleration. Check for a bent pushrod too. Run it and look carefully at the action of the valves in comparison to the ones next to it. A flattened out cam lobe or collapsed lifter will show up most of the time in a visual check.
Bob
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