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ruf-porsche ruf-porsche is offline
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Originally posted by 911pcars
The cylinder that runs less rough when you disconnect its plug wire is the weak cylinder. Concentrate your diagnosis on that one (open circuit in plug wire, spark plug gap, crack in distributor cap, etc.).

If the compression check out okay follow Sherwood advice.

Check the wire to the weak cylinder. Pulling the spark plug cable from a spark plug can sometime cause an open circuit in the plug wire.

Use an ohm meter to check the resistance in the wire.
Old 02-03-2004, 06:16 PM
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