Valve Cover Leaking Oil

[kjhowayeck]

I have a 1987 Mercruiser 3.0 140 and have replaced the valve cover gasket several times due to problems below the valves, head etc. Looking at the engine from inside the boat I can not get the valve cover to quit leaking from the right side. It has three bolts on this side and it seems to be leaking from it. I have used a new gasket and gasket rtv on it and also used studs to put them both in place. Is there a certain way to tighten the bolts down from center left side first etc.

 

[jeff13601]

Re: Valve Cover Leaking Oil

Lay the cover on a flat surface and see if it is warped. When you put the cover back on, crank them down lightly and then go around and evenly crank them down the same. I would have to think your cover is warped somehow or you did not get all of the old gasket off

 

[kjhowayeck]

Re: Valve Cover Leaking Oil

Lets say it is warped, should it be replaced or is there any other way to fix. I am going to try to fix tonight but that always takes longer than I think it will. Thanks for the post.

 

[jeff13601]

Re: Valve Cover Leaking Oil

I am sure that you could probably tap it back down with a hammer but the best fix is a new or good used cover

 

[kjhowayeck]

Re: Valve Cover Leaking Oil

thanks I got it to set just fine. I had not tightened it down again after runing it. Once again Iboats has helped me.