How To Test Engine Compression: Part 163

[@jeremygutridge2078]

Thank you for your wisdom

[@KeepOnWrenching]

Not sure there’s much here, but thanks!

[@greghamilton5461]

Just Watched it. Learned how it was done. Congrats on really good compression Brian. A job well done.

[@KeepOnWrenching]

Thanks, Greg. Believe me that I had all my fingers and toes crossed. Woke up in the middle of the night hoping. Lol. Onward!!

[@davidaldrich3488]

Bingo....never a doubt....good job
We are installing the common motor electronic ignition tight now on our 1970 cb350......Interested in your install

[@KeepOnWrenching]

They have an amazing video on that install. Great step by step. Not sure I can do much better. Thanks for the support, man! Much appreciated. Onward!

[@TulaTom]

That has to be a relief. 👍

[@KeepOnWrenching]

Big time!!

[@johnhenshaw7655]

You forgot to dry test for 1st reading,then put oil in and do second(wet) test, that way you van tell if it’s rings that are worn,or valves . If it valves that are worn the reading won’t vary, if it’s rings compression will jump when wet.

[@KeepOnWrenching]

Yeah not exactly right. This was after a full top end rebuild. It runs tho!

[@Andrewandrew-g6o]

Is the starter motor plugged into the solenoid when you did this?

[@KeepOnWrenching]

Yeah. It’s all plugged in.

[@lotophagi711]

Pretty good.

[@KeepOnWrenching]

I’m stoked! Phew! Lol.

[@jeromeactis]

Nice but usually i put oil before the test only if I have a bad compression, if it's better with oil that mean piston ring ko

[@KeepOnWrenching]

It was a quick text after the top end rebuild. It has since fired up. I’ll test compression again once running fully and hot. Fingers crossed!