Quote:
Originally Posted by Rick Parker
Ideas??
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You can isolate which cylinder is the faulty one by starting your engine cold and then use an infra-red pyrometer ($50 or less at Home Depot) to monitor the heat rate gain on the primaries, right at the outlet from the head, for the four cylinders on the right bank. The offending cylinder will lag behind the other three on the temp gain. Then, once you know which cylinder it is, I would switch the plug and wire for that cylinder with the one next to it (obviously not changing the firing order, just switch the plugs and wires). If the problem cylinder changes, then you know it's one of those two items. If it doesn't, then inspect/replace the distributor cap. If that doesn't do it, then we'll think harder.
