 Low Compression?, What am I doing wrong? |
 Dec 8 2006, 01:53 PM
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Newbie Group: Members Posts: 3 Joined: 22-January 06 Member No.: 781  |
So i take my car into my auto mechanics class today to do a compression test. Remove all 4 spark plugs (which look perfect) and the fuse for the fuel. Keep in mind the gauge we have is old and that is what I think is the problem, but it read 85psi on the spot across the board. How important is it to have the car warm, i only drove it across the parking lot. also, i notice that my dipstick pops up about 1/2" almost every time i open my hood, what's causing that? i know my compression is higher than that, it pulls strong, so what am i doing wrong?
-Chris |
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Dec 8 2006, 11:53 PM
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DSMCentral Godfather  Group: Admin Posts: 3,823 Joined: 10-January 01 From: Washburn Member No.: 26 |
BTW- An engine will not usually even fire when the compression is below 90psi. The only way to make up for that would be with boost like your turbo and you have to at least have a few cylinders firing to get the turbo to pump boost. So I'd say that the reading IS faulty since you didn't mention that problem.
-------------------- In Loving memory of David T Crebo
Greatness comes from the most unexpected places!  |
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Posts in this topic
silentsprintero Low Compression? Dec 8 2006, 01:53 PM
turbohcar The dipstick popping out is a common problem, espe... Dec 8 2006, 02:01 PM silentsprintero Yea the motor has 92k. I took the hose from the va... Dec 8 2006, 02:03 PM AWD DSM 1 Three major things that affect compression.... ri... Dec 8 2006, 02:42 PM black92_tsi_awd Having equal readings across the cylinders is a go... Dec 8 2006, 04:46 PM silentsprintero Thanks for the advice!! I'll borrow my... Dec 8 2006, 11:25 PM
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