Hi, after test....

Engine ON
Vaccum port connected: 34PSI (Bentley 29PSI)
Vaccum port not connected: 40PSI (Bentley 36PSI)
Engine OFF
10 minutes check 34 PSI

Ben
ps.: what is the max and min PSI reading???????

vanagons@cox.net wrote:

>Ben,
>Change the fuel pressure regulator!
>Gas is washing down the cylinder walls, probably cutting down the compression. I had black soot coming from the tailpipe, and it smelled a lot of gas.
>Good luck,
>Doug
>
>
>>From: Benny boy <huotb@VIDEOTRON.CA>
>>Date: 2005/06/06 Mon AM 10:04:13 EDT
>>To: vanagon@GERRY.VANAGON.COM
>>Subject: Compression? (PSI)
>>
>>What is you're average engine compression?
>>
>>We all know that we wish we had around 150-180PSI...but!
>>Most van i do are more in the 130-150psi area.
>>
>>Am just curious...
>>
>>The reason, this  van:
>>http://www.benplace.com/vanagon_engine6.htm
>>
>>New heads, new rings, pistons and sleeve were within wear limits...
>>compression is 125psi all around...kind of low...valves at 1 turn in, were a
>>2 but no difference in compression (of course), warm...slightly
>>higher...135, but still pretty low, this is a Syncro with 16in big wheels
>>(doesn't help)...
>>
>>This is the van that had (and still has) the very steady cloud of smoke
>>(fuel) at cold start...everything was swaped (distributor, OS, idle valve,
>>control box, AFM...) with another good working van...for the exception of
>>the fuel regulator and pump???  am slowly giving up on that van...  my fuel
>>pressure tester was stollen by a customer so....
>>
>>I will double check timing this morning but still...
>>
>>Any good suggestions???
>>
>>Regards, Ben
>>
>>
>>
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