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| Author |
Message |
    
Floyd Hauffe
Member
Username: floydh
Post Number: 6
Registered: 06-2009
| | Posted on Friday, June 19, 2009 - 11:53 am: | 
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Can anyone tell me the proper way to perform a compression test on a single cylinder P6?
Thanks,
Floyd |
George Martin
Visitor
| | Posted on Saturday, June 20, 2009 - 08:35 am: |
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I just used a normal car compression test guage and crnked the engine over as fast as possible, only needs a couple of turns. I got about 100lb/psi. I also have a vac/pressure guage which could probably be utilised to measure crankcase vac/press, but not tried that yet, cos I put new seals etc in it. |
Miah Gregory
Member
Username: mace
Post Number: 8
Registered: 05-2008
| | Posted on Saturday, June 20, 2009 - 08:23 pm: |
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I have been having some trouble with my P5 lately, and happened to do a compression test today, getting around 100 PSI, which feels about right.
However upon replacing the spark plug, i noted that there is some loss of compression from around the plug itself - does anyone have any ideas as to how to work around this?
Thanks. |
George Martin
Visitor
| | Posted on Sunday, June 21, 2009 - 04:53 am: |
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Surely it must be the plug gasket. unless its a new plug badly machined. |
Miah Gregory
Member
Username: mace
Post Number: 9
Registered: 05-2008
| | Posted on Sunday, June 21, 2009 - 07:44 am: |
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Seemed to have the same problem with a number of plugs; I had some limited success borrowing a rubber O ring from my compression tester and using that as a gasket but obviously not for very long as its not designed to handle heat.
Thanks. |
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