Posted by Jeff on August 26, 2002 at 17:26:31:
This engine idles great until it come up to running temp, then #3 cylinder goes dead. I have changed plugs, wires, rotor, cap, and even swapped out the distributor with another one. I have checked the compression 125 cold-- 100 hot it was even on all cylinders. I also checked the valve adjustment and it was OK . I loosened up #3 valves thinking it must be tighting up when it warms up. The valve springs seemed to be OK ( no broken ones) . This problem seemed to happen all at once , It ran great before. Could the valve seat be raising up and not letting the valve close? Nothing I have done has helped. Jeff
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