At 03:08 PM 11/4/97 -0600, you wrote:
>
>Thomas:
>
>Can you give some help on what is meant by a wet or
>a dry compression test???
>
>Thanks for the help.
>
Get yourself a compression meter.
Pull all the spark plugs.
(Charge the battery, full up)
connect the meter to cylindar #1, crank the engine a few turns. Read the
meter.
(should be around 110 lbs, may be as high as 160)
do the same for all cylindars. record the readings.
Now, go back to #1 squirt in about a teaspoon full of 30 wt motor oil.
Run the compression test (wet). record. repeat for all cylindars.
If you have a ring problem the results will be somewhat higher on the wet
test.
If the test are very low < 80 lbs, big trouble.
If the results are somewhat higher with the wet test, ring trouble.
If the results do not change more than 10 lbs dry to wet, good rings.
Low between neighboring holes = head gasget, crack or such.
You get the picture.
Tom Howard
Lakeside Union School District
('72 Triumph GT6, and a good bit of USA iron)
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