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bauerl
Posts: 3
Joined: Thu Sep 05, 2019 8:12 pm

New member

Post by bauerl »

Hello, I'm new 1973 bus owner. Its a restoration project. Right now I'm trying to figure out what is wrong with #4 cyl. compression test. Dry test 1st 140, 2nd 130, 3rd 135, 4th 105. Wet test every cyl. comes up approx. 5lbs.
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V8Nate
Posts: 850
Joined: Mon Sep 03, 2018 12:34 pm

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Post by V8Nate »

Make sure valves are adjusted properly
Ol'fogasaurus
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Joined: Mon Nov 13, 2006 10:17 pm

Re: New member

Post by Ol'fogasaurus »

V8Nate wrote: Fri Sep 06, 2019 2:05 am Make sure valves are adjusted properly
And, if possible, do a compression check.

Lee
bauerl
Posts: 3
Joined: Thu Sep 05, 2019 8:12 pm

Re: New member

Post by bauerl »

Valves are adjusted to .006 on both intake and exhaust. I will repeat to the test after I can run it for ten minutes or so.
Bruce.m
Posts: 1024
Joined: Sun Aug 11, 2013 1:44 pm

Re: New member

Post by Bruce.m »

Blow compressor into spark plug with the valves shut and listen for a hiss from inlet / exhaust/ case breather, to find out where the losses are coming from.
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