low compression--what is it?

[green536@hotmail.com (Chris DeLong)]

you are correct sir. however, adding oil to a compression test will 
inevitably bring the compression higher no matter what. it is not unusual to 
get a low reading and then after running the engine at high rpms get a 
higher or normal reading.



Chris DeLong
ICQ#45030867
Seattle, WA USA
'80 16V 'Rocco ragtop
'91 GLi 2.0 16V (for sale)
'77 Rabbit 16V
'61 17 Window type II
'91 Vanagon
'84 Jetta





>From: JoshuaA.Conner@VerizonWireless.com
>To: abatzis2@hotmail.com, scirocco-l@scirocco.org
>Subject: RE: low compression--what is it?
>Date: Tue, 18 Feb 2003 21:48:12 -0500
>
>I thought if the compression goes up alot on the wet test it generally 
>meant
>bad rings.  When you put oil in the cylinders doesn't it seal the
>"looseness" of the rings?
>
>Joshua C.
>
>-----Original Message-----
>From: Michael Abatzis [mailto:abatzis2@hotmail.com]
>Sent: Tuesday, February 18, 2003 6:03 PM
>To: scirocco-l@scirocco.org
>Subject: low compression--what is it?
>
>
>i've had an oil leak of unknown source for 3months, and have recently been
>noticing poor power. finally cleaned the engine last week, and despite
>losing 1/2 qt of oil, the outside is still clean. i did a compression test
>today, with the following results:
>
>215/220/230/100
>
>yeah, the gauge has always read high (210-220 has been average across 3
>engines), but obviously #4 is the concern. plug threads were oily, but 
>plugs
>
>themselves weren't fouled. pistons from what i saw were gunky.  wet
>compression raised #4 to 170, but 1/2/3 also increased by 40-50 psi, so i
>don't know what to make of that. coolant has no oil in it.
>
>so, what's up? head was replaced (with hg) maybe 6 mos ago, and had been
>recently redone apparently (brett c?). i'm thinking headgasket v.
>stuck/dirty valves v. leaky valve guides v. (less likely) rings/other bad
>stuff. any ideas, or how to better eval? btw, my car is way worse than 
>yours
>
>cathy.
>tia,
>
>
>-Michael Abatzis
>Hotlanta! GA
>1988 Scirocco 2L 16v RIP-->parting, finally taking orders:
>www.learnlink.emory.edu/~mabatzi/mikes_page1.html
>1987 Scirocco 2L 16v...
>
>
>
>
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