1996 Chevy Blazer fuel injection

EURAILA

MEMBER
1996 CHEVROLET BLAZER
6 CYL
4WD
AUTOMATIC
162,598 MILES

I replaced the fuel pump in the tank, after which I bleed the fuel rail and now I have nothing to the Throttlebody, it is to the rail. What should I do next.

Sunday, December 6th, 2009 AT 10:14 AM

2 Replies

SWILLIAMS

MECHANIC
597 POSTS

Unless someone changed that engine with an older unit you should NEVER see fuel in the actual throttle body. It is nothing more than an air valve. The injector system is located below the intake manifold plenum. It feed the poppet injectors at each intake runner.

What is the original problem?

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Sunday, December 6th, 2009 AT 11:30 AM

JAMESWIA

MEMBER
9 POSTS

Start simple. You replaced the fuel pump. Did you replace the fuel filter. (Vehicle has high miles. A clogged fuel filter can act like a failing fuel pump) There's a remote chance that the original fuel pump was never failed.
Note: make sure that the new fuel pump has electrical power. Make sure the electrical connector terminals are OK and that the fuel pump fuse is OK.
Once you know that the filter is OK. Inspect fuel lines for leaks or damage. Do a fuel pressure test. Make sure fuel pressure is held/maintained after the vehicle is shut off. There should be no immediate pressure loss.

The previous poster is correct. The throttle body only meters air.

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Sunday, December 6th, 2009 AT 1:01 PM