Fuel getting into the oil only 2000 miles on a gm replacement motor

Tiny
97S10V8
  • MEMBER
  • 1987 CHEVROLET S-10
  • 2,000 MILES
Fuel in oil 1987 s10/ 2.8 automatic, fuel injected
Saturday, September 3rd, 2011 AT 11:23 PM

9 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Saturday, September 3rd, 2011 AT 11:32 PM
Tiny
97S10V8
  • MEMBER
  • 6 POSTS
It has throttle body injection. Where is the best place to check the fuel pressure?
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Saturday, September 3rd, 2011 AT 11:38 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Right behind the TB on fuel inlet pressure line
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Saturday, September 3rd, 2011 AT 11:46 PM
Tiny
97S10V8
  • MEMBER
  • 6 POSTS
Thank you!
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Saturday, September 3rd, 2011 AT 11:50 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You're welcome and TY for using 2carpros
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Saturday, September 3rd, 2011 AT 11:54 PM
Tiny
97S10V8
  • MEMBER
  • 6 POSTS
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?
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Monday, September 5th, 2011 AT 8:59 PM
Tiny
97S10V8
  • MEMBER
  • 6 POSTS
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.
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Tuesday, September 6th, 2011 AT 5:45 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Your injector/s are leaking time for a new one-
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Tuesday, September 6th, 2011 AT 5:50 PM
Tiny
97S10V8
  • MEMBER
  • 6 POSTS
Thanks
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Tuesday, September 6th, 2011 AT 6:09 PM

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