Re: Basic oil pump question-please help me first t

Posted by David on June 27, 2003 at 09:02:09 from (130.209.6.43):

In Reply to: Basic oil pump question-please help me first time posted by Trying to learn on June 27, 2003 at 08:11:20:

Main function of oil pump is to supply pressurised oil to crankshaft bearings and cam shaft bearings. Depending on engine it may also supply other bearing surfaces like timing gear bearings too. Potentially anything that rotates could be damaged if the pump isn't working right. However, its pretty unlikely that everything is actually damaged. Heavy knocking usually means there is wear on the big end bearings. Dull rumbling indicates wear on crankshaft main bearings.

If the engine really is damaged it sounds like you'd be looking at getting the crankshaft ground and new bearing shells fitted to both main bearings and big ends as a minimum. Other bits may not have suffered damage. Noise is a good clue but you really can only be certain by stripping it down and checking things them by visual examination and possibly measurement of wear.

Oil pressure gauges are fine for telling how well the lubrication system is working but the driver does have to look at them and interpret what they see. An oil pressure warning light can be a more readily noticed indication of a problem. i.e. If it comes on, it means you need to stop the engine. You also notice it coming on where you don't always notice what a gauge is doing.

Neither gauges nor warning lights are designed to warn of low oil level. Checking oil level manually or by a fancy electronic sensor is still needed. (Actually they will tell you when oil level is gets so low that pump isn't picking up any oil but by that time you may already have done the damage. )

Oil pressure gauge or warning light switch screws into a tapping in the main oil gallery on the side of the block. I'm not familiar with your engine so can't say exactly where. By putting a T piece into the tapping you can fit both a light and gauge together.

Follow Ups:

• Re: Re: Basic oil pump question-please help me fir Bill in TN 11:48:31 06/27/03 (0)

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