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Re: Oil Pressure relief valve.
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Posted by Larry West [Email] (#1140) [Profile/Gallery] (more from Larry West) on Thu, 7 May 2009 11:11:51 Share Post by Email
In Reply to: Oil Pressure relief valve., Frank Myers, Thu, 7 May 2009 10:59:34
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The valve is part of either the oil pump or the timing chain cover, I can't recall exactly. It is in a not-terribly-easy place to get to.

First thing you should do is find out for sure if you have low oil pressure. To do this, you connect a regular gauge to the port where the oil pressure switch is located.

If the pressure is below specs, then yes, the relief valve may be a problem, if a piece of debris is keeping it open.

But as for other things regarding the noisy lifter, one thing to try is pour a can of Gunk engine flush (not the foamy stuff. This comes in an old-style oil can) into the motor, and run the motor for a while This will thin the oil out, and hopefully dislodge anything that may be in a bad place. After running the motor for a while (check the instructions), then change the oil and filter.
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