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04-20-2005, 10:02 PM
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Oil Pump Failure On 300E. Uncommon?
One of my customers has a 93 300E in his shop. His customer stated that the oil pressure had been low for awhile and eventually went to zero. He drove the car home and it began to knock. He wants a new oil pump installed. My customer asked me to look at it and sure enough, no oil pressure at idle and a knock. The knock sounded like it was coming from under the valve cover. I raised the engine RPM to 2000 and the oil pressure rose to midscale and knock almost dissappeared. O.K. Oil pump is apparently working but pressure ain't what it needs to be. I'm think'in clogged oil pump strainer or collasped oil filter (el cheapo deluxe filter). Anybody with a similar experience?
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