Does the valve train tick go away when you give it alittle throttle? How many miles on it? I have seem a few GM 2.8/3.1/3.4 liter engines do that. The bearings in the engine wear to the point that the oil pump can"t hold any PSI but there is lots of oil volume. I believe the oiling system on that series of engine oil the crankshaft and con. rods before the cam and lifters. I would bet the main bearings are wore out.
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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