Fuel injectors are are not spraying. Do have fuel to throttle body.replaced pump and relay. What controls power to injectors?

70

Asked by Jan 14, 2013 at 07:13 PM about the 1991 Chevrolet Astro CL Passenger Van

Question type: Maintenance & Repair

4 Answers

6,795

Fuel injectors are electric. When the injector is energized, an electromagnet moves a plunger that opens the valve, allowing the pressurized fuel to squirt out through a tiny nozzle. The nozzle is designed to atomize the fuel or to make as fine a mist as possible so that it can burn easily. I find it hard to believe that all the injectors are bad or not working. How do you know they are not spraying fuel? Have you checked them?

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3,105

have to check power feed and ground signal to the injectors

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Best Answer Mark helpful
70

Yes, I have air filter etc, off and when cranking engine see no spray. We very much appreciate suggestions and help. If we add a little fuel directly, it starts right up.

6 of 6 people found this helpful.
70

I replaced all fuses in main box.cleaned all electrical connections around engine compartment with a spray on electronic connection cleaner. Don not know exactly which one worked, but it started right and runs good. Thanks for all of the suggestions.

1 of 1 people found this helpful.

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