150lbs compression?

henrye718

Petty Officer 1st Class
Joined
May 24, 2009
Messages
207
I am having some engine problems so I did a compression test and it turns out both cylinders have 150lbs of compression. Went right up there after about 3-4 seconds of cranking. Is this to much?

Seems very high for a 1989 40 hp motor. I called my friend who loaned me the tester to see what readings he got on his engine. He stated 112-115lbs, so im thinking this tester is reading high and im more like 120-30lbs and he is under well under 100. Or do I have a big carbon build up here or something?

PS: my engine problem is one cyl is only running at idle and dies when throtling up. Was going to ask for help on this in another thread.

Thanks all.
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: 150lbs compression?

just a very healthy engine. see you other post.
 
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