Question about 1992 Ford Aerostar Extended

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On my 1992 Ford Aerostar 3.0 Engine (fuel injection) i'm getting fuel in the crankcase. What's causing this ?

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In the old days, I would have said a leaking fuel pump diaphragm, but that can't happen anymore.

Assuming the engine does not run as rough as one with a bad plug would be, then I would suspect an injector.
If an injector does not seal up when off, then about a pint of gas will slowly drip into the crankcase every night.

Remove the injectors from the manifold, but leave on the fuel rail. Then turn the key or shunt the relay in order to turn the fuel pump on for a few seconds. The injectors should only fire intermittanly when their time comes. After that there should be no drips. If one is dripping or has a bad spray pattern that is not a cone, replace it.

Posted on Jun 03, 2010

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