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·I want to run a compression te
I want to run a compression test on my 365BB this weekend just to see what the figures are - and yes I know a leakdown testwould be more revealing but that can come a little later.
So my question is this - is my procedure correct?
I will get the temps up to normal first, then I intend to remove all 12 plugs and then, with the throttle wide open, I will run the test on #1, #2, #3 etc. Then I will squirt a little oil down the plug hole of each cylinder in turn and re-run the test.
I have been told I should leave the other 11 plugs in place (and disconnect the HT leads, of course) rather than remove them all.
I can't see what the difference will, be except for the load on the starter when turning the engine over on the key, but I may be missing something.
What values should I be expecting to see? Wet / Dry? 160-170-190 ? I will, of course, post these when I have the results whether good or bad.
Any suggestions or comments welcome.
I want to run a compression test on my 365BB this weekend just to see what the figures are - and yes I know a leakdown testwould be more revealing but that can come a little later.
So my question is this - is my procedure correct?
I will get the temps up to normal first, then I intend to remove all 12 plugs and then, with the throttle wide open, I will run the test on #1, #2, #3 etc. Then I will squirt a little oil down the plug hole of each cylinder in turn and re-run the test.
I have been told I should leave the other 11 plugs in place (and disconnect the HT leads, of course) rather than remove them all.
I can't see what the difference will, be except for the load on the starter when turning the engine over on the key, but I may be missing something.
What values should I be expecting to see? Wet / Dry? 160-170-190 ? I will, of course, post these when I have the results whether good or bad.
Any suggestions or comments welcome.