low compression--what is it?

[abatzis2@hotmail.com (Michael Abatzis)]

heh heh. yeah, i bought some valve cleaner (one for oil, one for gas), and 
gave it a typical flogging. holding off till the weekend for a good one. 
auto-adjust clutch cable started to go yesterday (it never ends). don't want 
to go to far before i replace it this weekend. i'm hoping it's stuck/dirty 
valves (this happened once on the old 1.8). but could it be the head gasket? 
or would i definitely get oil in the coolant/coolant loss? i'm going to 
recheck the head stud torques this weekend, just in case.


-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...




>From: "Chris DeLong" <green536@hotmail.com>
>To: abatzis2@hotmail.com, scirocco-l@scirocco.org
>Subject: Re: low compression--what is it?
>Date: Wed, 19 Feb 2003 02:50:58 +0000
>
>put the plugs back in, go flog the hell out of it, bring it back in and do 
>another comp test. it is possible for carbon deposits to get stuck between 
>the valve and the seat. flogging it will hopefully get rid of any pesky 
>carbon deposits and yeild a better comp test. oil on the threads usually is 
>from undertightening the plugs.. HTH
>
>
>
>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: "Michael Abatzis" <abatzis2@hotmail.com>
>>To: scirocco-l@scirocco.org
>>Subject: low compression--what is it?
>>Date: Tue, 18 Feb 2003 23:02:32 +0000
>>
>>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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