Question about 1991 Volkswagen Jetta

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Jetta 1990 digifant II no oil pressure at all not even a smidge checked with manual oil guage to the head. wouldnt a bad pump still pump. what about pressure relief valve?

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  • Richard Scordino May 11, 2010

    Try blowing air through the port where the sending unit goes in...It may be blocked. Is the engine making noise from lifters, bearings etc?

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Sounds to me like your looking for a new motor . If the pump is so bad as to have no pressure it either has high mileage or broken internal parts jamming it. A non-working pressure relief valve is almost always the result of crud build up, also not good. If that valve is full of crud chances are pretty good so is the rest of the motor resulting in poor circulation and excessive wear. You may get lucky when you open up the motor and find something simple like a sheared pin at the oil pump drive but I wouldn't count on it unless this is a sudden problem and you had good pressure all along.

Posted on Jun 04, 2009

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