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Old 12-29-2016, 04:03 AM
blykins blykins is offline
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My thoughts are the same as everyone else's. You're pulling in oil from somewhere.

This will also make it harder to tune the carb as the engine isn't as efficient as it should be, which would cause it to not produce the signal that it should.

If you're not using a PCV valve, then most likely you're sucking in oil. When you pull the intake manifold, you'll be able to see where it's coming from. Look for oil trails leading to/from the ports, indicating an area where oil is contaminating the intake gasket. Also look for oil on the heads of the valves, covering the inside of the port, or running down the valve stems.

If the port is oily, then the oil is probably coming from a failed gasket, or a PCV sucking in oil, etc. If the head of the valve is oily and you see traces of oil running down the stem, then you're most likely looking at a seal/guide issue.
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