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-   -   Engine noise help needed (https://www.offshoreonly.com/forums/general-q/285953-engine-noise-help-needed.html)

Griff 10-07-2012 01:21 AM

You will be able to check the lifter and cam lobe as soon as you pull the intake manifold.



Originally Posted by JMS322 (Post 3791465)
If the rockers are loosened and the valves don't open.....you will have no compression. You can't check compression with misadjusted valves.

X2

If the intake valve is not opening, then no air is getting in to be compressed. If a valve is stuck open, then air will just escape instead of compressing.

1987pachanga22 10-07-2012 11:20 AM

With both valves closed shouldn't I still pull air in and push it out through the spark plug if there is nothing blocking that port?

Griff 10-07-2012 12:01 PM

I saw on MWBP that you found a bent valve. Now you need to find what caused it.


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