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Engine won't run Has good fuel pressure

Tiny
APRILNDON2
  • MEMBER
  • 1989 CHEVROLET S-10
  • 75,000 MILES
And will run when pour gas in carburetor. Any suggestions?

I have a 1989 Chevy S-10 with a 2.5L engine and TBI carborator. I have troubleshot the fuel system from the fuel pump to the carb.

If I spray fuel into the carb it will start and run as long as I am spraying the fuel. What can I check next in regard to the throttle body carb? Do you have any suggestions?
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Monday, February 13th, 2012 AT 10:39 PM

8 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Have ignition module tested. Check for voltage at injector plug.
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Monday, February 13th, 2012 AT 11:08 PM
Tiny
FIXITMR
  • MECHANIC
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Another same long drawn out post was cured with new hall effect switch. Now called cam sensor/switch.
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Monday, February 13th, 2012 AT 11:25 PM
Tiny
APRILNDON2
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  • 3 POSTS
Those are good suggestions, but I don't have a schematic of the carborator and don't know where the cam sensor switch and the ignition module had been changed just a few thousand miles ago.
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Tuesday, February 14th, 2012 AT 3:20 PM
Tiny
FIXITMR
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Cam sensor/hall effect is in distributor and injector which is centered in top carb opening has 2 wire plug.
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Tuesday, February 14th, 2012 AT 8:17 PM
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
You say that you have a problem from the fuel pump to the engine, it runs with you putting fuel in the carb try changing the fuel filter first.
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Friday, February 17th, 2012 AT 4:10 PM
Tiny
APRILNDON2
  • MEMBER
  • 3 POSTS
Thanks for the input. We've already changed the fuel filter and checked the rest of it. Now think it may be the injector itself, as it just drips gas instead of spraying so am going to put in a new injector and throttle body repair kit and see what that does. Again, thanks for your reponses.
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Friday, February 17th, 2012 AT 5:14 PM
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
I try to think the the most ovious things first less costly if the injectors are just driping then I can seeit being the injectors
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Friday, February 17th, 2012 AT 5:20 PM
Tiny
FRISBEE30
  • MEMBER
  • 4 POSTS
It's probably the fuel injector. I had the same problems w my s10 and that fixed the problem.
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Saturday, February 18th, 2012 AT 1:00 AM

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