Compression Test. 1999 120

[BforBass]

I did a compression test on my 1999 120. I couldn't find what the compresion should be in SELOC, but for some reason i have 140 in my head. Anyway how long should the cylinders hold pressure? a few of my cylinders lost pressure pretty fast once i stopped cranking. They all registered about 150. I didn't have the motor warmed up, but it was running just a few days ago. Should i be worried about a leak?

 

[roscoe]

Re: Compression Test. 1999 120

When new, the compression was 135-150 on cylinders #1 and #4.<br /><br />It was possibly a little higher, 145-160, on cylinders #2 and #3.<br /><br />If you are getting 150 on all, you are good. <br /><br />It is going to lose pressure very quickly, since the exhaust or intake port will be open.

 

[BforBass]

Re: Compression Test. 1999 120

Thank you very much Sir. A guy can have everything he needs as far as a manual, and tools, but you can't buy experience. That's the immeasurable resource that we have thanks to you folks at iboats. I for one really appreciate it.