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Reply to "Grey Smoke During Deceleration"

The fact that you blow oil, more oil with the pcv disconnected is an indication of rings not sealing.

The vacuum that the pcv system provides to the sump aids in sealing the second ring, the lower ring.

I presume that the grey cloud is bad enough now to want to correct it?



I should also point out that valve guides with not enough sealing will also give you puffs of exhaust smoke.



From how you are describing your frustration probably the only way to deal with this is pull the engine out and disassemble it for examination?



Best of luck on this project. There isn't anything tricky about a Cleveland. Just put the right parts into it, assemble it carefully and it should be fine.

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