1989 Ford E-250 Other - Engine


Question: Ihave oil pressure that goes up and down.Can you flush oil screan with out dropping oilpan.

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Technican: Not recommended. You will break crud loose that will plug things up again. Make sure to check oil pressure with a mechanical gauge. In dash gauges can give erronous readings.
Owner: OIL PUMP CHANGED AYEAR AGO WITH HIGH VOLUME.MOTOR SEEMED CLEAN
Technican: You could try a flush. It may work. It's still important to use a mechanical gauge to verify the fluctuation in pressure.

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