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'Ello friends. I've been noticing lots of smoke from the exhaust the past two days. There's no water in the oil, but the plug on cylinder 4 is caked up and I've just changed plugs 2 months back... the other 3 are fine. It's looking to me like my head gasket is leaking, and I'm ready for the job, but I had a curious find...
(1986 900 SPG, 192,000 miles)
Cylinder 1 - 150 lbs compression.
Cylinder 2 - 145 lbs compression.
Cylinder 3 - 145 lbs compression.
Cylinder 4 - 170 lbs compression.
Why would cylinder 4 be so much higher than the other 3? Is there perhaps some oil on the rings, or some excessive deposits causing cylinder 4 not to get that very minimal amount of blowby?
~Josh
(1986 900 SPG, 192,000 miles)
Cylinder 1 - 150 lbs compression.
Cylinder 2 - 145 lbs compression.
Cylinder 3 - 145 lbs compression.
Cylinder 4 - 170 lbs compression.
Why would cylinder 4 be so much higher than the other 3? Is there perhaps some oil on the rings, or some excessive deposits causing cylinder 4 not to get that very minimal amount of blowby?
~Josh