Question about 1998 Chevrolet Tahoe

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Loose oil pressure when you let off of the gas on a 1998 chevy tahoe need to know if i can change the camshaft bearing with the motor still in the truck i put in new oilpump rods and main bearings in yesterday

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  • Chevrolet Master
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You can but will need to remove radiator and a/c condensor and maybe grill, you need room to slide it out and to use the tool to remove the bearings,also if you are replacing the bearings i would highly recommend replacing the camshaft,also did you replace the oil preasure switch or test the oil preasure with a gauge to make sure you were loosing preasure, or did you do this by the inside gauge. hope this helps.

Posted on Sep 05, 2010

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Motor knocks


Hello;
Before you start to pull the crank out, check your oil pressure via an independent gage. Then if you have around 25-30 psi gage, drain some oil out. Put a quart of Marvel Mystery Oil in and top off . Change oil filter. Drive the truck for a few miles. Change the oil and filter. This should start to break away the sludge that is built up.

You may need to do this up to 10 times before you can go 3000 miles on an oil change.
Now if the oil pressure is extremely low, yes you can change the crank in chassis. I have done it in a pinch before. It is much easier to pull the engine and put a crank in. If the crank is bad, you also have a rod that is bad. You also need to clean all the parts or emminent failure will occur.
I would also change the knock sensors on your truck as well. Hope this helps. Rate me high.
Thanks;
Rich
RPM Northwest

Feb 02, 2009 | 1998 Chevrolet Tahoe

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