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WD45 compression readings

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Michael in Texa

07-30-2002 06:06:39




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I'm in the process of buying a WD45 and figured I should check thed compression. Can anyone tell me what the readings should be on the tester?




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Mark/Ks

07-30-2002 07:06:34




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 Re: WD45 compression readings in reply to Michael in Texas, 07-30-2002 06:06:39  
Somebody can correct me, But I believe it should be at or about 130 PSI.. My working WD-45 is running at 125 on three cylinders, and 120 on one.
After 12 years on a rebuild I guess that is still good.



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Michael in Texas

07-30-2002 07:14:21




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 Re: Re: WD45 compression readings in reply to Mark/Ks, 07-30-2002 07:06:34  
Thanks. This will give me something to go by.



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Brian G. NY

07-30-2002 07:30:59




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 Re: Re: Re: WD45 compression readings in reply to Michael in Texas, 07-30-2002 07:14:21  
The WD-45 manual is one of very few that states an actual compression pressure value; 125# @ 500 RPM. Most just indicate that there should be no more than 10% difference between the low and the high readings. Yours is mighty fine!



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