Alfa Romeo Bulletin Board & Forums - View Single Post - engine compression?
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post #19 of (permalink) Old 02-18-2015, 07:41 PM
Del
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Join Date: May 2005
Location: seattle
Posts: 15,357
I neglected to say anything about what it means if the readings do come up. I didn't say that the rings would be fine if they did come up as you imply I did in your second point. I think you misunderstood my comment, and just assumed that.

When I said, "If you don't do this, you can end up with low readings", I meant that it may be the case if the rings are worn, and it will result in those low readings.

It has been standard practice to use a little oil in the cylinder to see if that does happen. It is a check to see if the readings do come up, meaning that perhaps the compression rings are faulty; or if the values don't come up, valves are most likely dodgy.

Del

Seattle

1989 Milano, Shankle Sport
1991 164S, stock
1994 164LS (~Q)
1972 Morgan 27

previously owned since 1964:

62 Morris MiniMinor 850, 67 Austin 1275 Cooper S (Downton 3/4 race), 64 Giulia Sprint GT (1st red one made), 72 Fiat 128 Sedan, 75 Alfetta Sedan, 78 Alfetta Sedan, 78 GTV, 81 GTV6, 86 GTV6

Last edited by Del; 02-18-2015 at 09:05 PM.
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