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90 240 330,000 miles compression test results? 200

posted by  someone claiming to be John McPhail on  Sun Oct 18 14:18 CST 2015 [RELATED]

Try again with your assistant holding the throttle wide open.

Not sure why #3 is taking longer to come up, but 150 psi is a little on the low side. I usually see 170-180 psi, even on high mileage b230f's. 150 is not nearly bad enough to warrant pulling the motor, but it is low enough to point to ring wear (which is to be expected at 330,000 miles).

I think what you are seeing here is normal "wear and tear." The engine could probably go another 150,000 before the compression gets low enough to warrant a rebuild. Even then, you will need only new rings and a vale job.






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