Question about 1988 Chevrolet K1500

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Injectors wont spray

Replaced fuelpump getting fuel to throttlebody but injectors wont spray.

Posted by Anonymous on


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Posted on Jan 02, 2017

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SOURCE: 85 s-10 2.5l no fuel from the injectors

electronic engine control unit calculates the mass of fuel to inject, not how wide it sprays. It's the type of solenoid that you use. Some have wider spray nzzles than others. An external Fuel pump helps the delivery of the fuel. Also since fuel injectors rely on mass air flows nowadays, you have to have proper mixture coming through. hows your Fuel pressure regulator?

The throttle position sensor reports to the computer the position of the throttle butterfly valve, which the ECM uses to calculate the load upon the engine-but inorder for this to run, you may need an external pump.

Sounds like nothing is being grounded back to the ECM to even give a reading. If your regulator is improper and you do not have a external pump (depending on your model), than check those. If not, Start from scratch.

If you ever lose your way, go back to the beginning_REWIRE!


Posted on Feb 16, 2009

  • 1118 Answers

SOURCE: cannot get 1987 chevy van 20 to keep running... stalls out

Best do a fuel pressure test. Should have chg. fuel filter from the get go. The only other filter is on the end of the fuel pump in tank. Bad gas and dirty gas will plug up fuel filter, hense burn pump up.

Posted on Apr 11, 2009

SOURCE: no fuel at injectors in throttlebody

Check the wiring to the injectors and your fuel pump

Posted on Jun 20, 2009

  • 43 Answers

SOURCE: fuel injectors spraying to much gas

to be honest, with an 89, all you can do is replace the injector. how an injector works is there is a small amount of current that is run to a coil around a rod (if you are unaware, this produces magnetic fields). the magnetic field produced pulls up what is usually a small ball, allowing fuel to go through the tip of the injector nozzle. all you can do to fix this is to buy different injectors.

just a question..why do you think they are spraying too much fuel? because it may just be that you have excessive fuel pressure and your fuel pressure regulator is bad. hit me back.

Posted on Jan 02, 2010

Testimonial: "fuel pump regulator it keeps on flooding"

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SOURCE: injectors s10 1991

So your saying fuel pump giving you pressure but ALL injectors are not firing. IF ALL INJECTORS ARE NOT FIRING AND FUEL PUMP IS A-OK THEN ECU IS THE PROBLEM.
However, if a few are not firing then its probably those injectors.

Posted on Jun 14, 2010

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What fuel injection system does it have ? Center port fuel injection or fuel rail injection ? Are the injectors being controlled (turned on) by the PCM - engine computer ? Do you know how to test injector drives ? Injector driver is a transistor inside the PCM , that controls the on/off time of the injectors . How to test fuel injector circuit with basic tools open control wire How to change SPIDER INJECTOR on Chevrolet V8

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My 1989 camaro runs when I pour gas in the throttlebody but then dies when the gas runs out

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Dec 13, 2012 | 1989 Chevrolet Camaro

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I have a 2002 Chevy Blazer. It died driving down the road. I thought I was out of gas. I have since replaced the coil, the rotor and cap on the distributor. I have spark. I used a fuel pressure tester and...

First will it fire with the aid of fuel inducet to the engine? There will be a breather hose attached to the intake near the throttle body. remove and use a carb/ throttlebody cleaner spray, have someone crank the engine and spray into the hole going into the throttlebody using the straw that the cleaner comes with. if it fires then the engine is not getting fuel. fuel pressure should only be 60-66 psi. Sounds like you have a faulty Fuel injector spider assembly. The regulator IS replaceable, you have to be VERY careful if you want to try that first. the assembly is plastic type of material and gets britle.and brakes EASY along with the injector lines. I will usually just replace the whole assy. as if it is not the problem and the injector is you have to go back into where you already were again.

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Has fire and is turning over strong but wont start

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Oct 23, 2010 | 1986 Ford Ranger 2WD

1 Answer

I'm having my injectors cleaned on my '04 f150. The shop suggested that I also service the throttle body at $100. Is this common and a suggested service?

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Multiport has an injector for each cylinder. A multiport wont have a throttlebody, but both do have other parts, like an idle air control valve, and other items that could be cleaned.
I would recommend adding injector cleaner to the fuel, and spray some carburator cleaner into the intake while running. Just an idea!

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1997 Gmc serria 2500k throttlebody

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