Compression Testing...

[DrDubbleB]

I searched far, I searched wide, about the only thing that I didn't do was call shops up.  How much does the average compression test run you?  This question is for a friend...all help is much appreciated!

[camppain]

go to pep boys or ny car parts store and get the tester. much cheaper imho and ivenever heard a customer come into my job asking for one of htose

[DrDubbleB]

Bah...I wonder why nothing came up when I searched for it...ignore the post...I will find.

[WhiteS13]

Compression tester will give you an average idea of how the condition of a motor is, as long as you have a power source to the starter.  One drawback to just doing compression tests is that excessive carbon build-up on the piston tops may throw off your readings.

Best way to check a motor is to do a leak down test.  You need a compressed air source, but it's a lot more accurate because it tells the condition of the rings, and if the valves are seated properly.

Both tests should take no more than 10 minutes to do.

[9591]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (WhiteS13 @ April 08 2002,02:52)</td></tr><tr><td id="QUOTE">Both tests should take no more than 10 minutes to do.</td></tr></table><span id='postcolor'>
You be one quick dude.

[geeaj]

Just go down to the auto store and buy a decent compression gauge. They run about 40 bucks for a good one. IT will pay for itself after a while after two tests. &nbsp;Most shops charge 10/15 bucks for compression test.

[sykikchimp]

I agree with Whites13. &nbsp;A leak down test will give you a Much more accurate picture of how healthy your engine is. &nbsp;It can tell you specifically where you have issues by listening for where the air is comming out.. &nbsp;not just that you have an issue like the compression test. &nbsp;and adding a teaspoon of oil can sometimes throw off a compression test.