If you are rebuilding the engine, it would be best to replace the oil pump. one you have the engine out and have easy access to the pump. It also could be the cause of why you are having to rebuild the engine. the oil pumps are usually not that expensive, but pulling a motor loose to replace an oil pump when you will such easy access to replace it.. just be in your best interest to replace as it is such a vital part of keeping your engine from failing!
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If you are rebuilding the engine, it would be best to replace the oil pump. one you have the engine out and have easy access to the pump. It also could be the cause of why you are having to rebuild the engine. the oil pumps are usually not that expensive, but pulling a motor loose to replace an oil pump when you will such easy access to replace it.. just be in your best interest to replace as it is such a vital part of keeping your engine from failing!