Mechanics

FUEL GETTING INTO THE OIL ONLY 2000 MILES ON A GM REPLACEMENT MOTOR

1987 Chevrolet S-10 • 2,000 miles

Fuel in oil 1987 s10/ 2.8 automatic, fuel injected
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97s10v8
September 3, 2011.



Could be a leaky injector/s and fuel pressure regulator-could be running to rich due to the following

Probable causes of an engine running rich are as follows: 1. Excessive fuel pressure can be cause by restricted fuel return line
2. Defective Oxygen Sensors.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.

Rasmataz
Sep 3, 2011.
It has throttle body injection. Where is the best place to check the fuel pressure?

Tiny
97s10v8
Sep 3, 2011.
Right behind the TB on fuel inlet pressure line

Rasmataz
Sep 3, 2011.
Thank you!

Tiny
97s10v8
Sep 3, 2011.
You're welcome and TY for using 2carpros

Rasmataz
Sep 3, 2011.
Is there any way to check the fuel pressure without cutting the inlet steel line? Which is the return line, the top or bottom line?

Tiny
97s10v8
Sep 5, 2011.
The fuel injector sometimes sprays out fuel, other times when I start it it drips fuel like a leaky faucet. Not sure what that means. Engine temp. Doesnt seem to make a difference.

Tiny
97s10v8
Sep 6, 2011.
Your injector/s are leaking time for a new one-

Rasmataz
Sep 6, 2011.
Thanks

Tiny
97s10v8
Sep 6, 2011.