Question about 1996 Chevrolet Caprice
I've always wondered about something, but never really done it. Regardless of the year, make ,and model of a car is it possible to check fuel injectors in the following manner?
For example a 6 cylinder car.
1. Disable the ignition so the car doesn't start.
2. Disconnect the fuel rail from the engine, but leave the injector wiring and injectors connected to the rail.
3. Suspend the rail above the engine with the injectors hanging down.
4. Make up some sort of supply line to connect the suspended rail back to the engine so that fuel can reach the injectors when the engine is cranked.
5. Put a pan under the injectors to catch the fuel and crank the engine.
Logic tells me that this would work, and it would be a good way to observe the spray patternof the injectors, and to see if all the injectors are firing.
I'm an amature mechanic, but very I'm interested in hearing what the pros have to say about this.
IT IS POSSIBLE and has been done. as long as when you disable ign it does not cause pcm to disable injector pulse.when you first cut key on they will spray a shot also. it is also a good way to check for a leaking injector,see if one drips after sitting a while. however if you have fire with a noid light and injector is not hitting it is most likely a bad injector
Posted on Feb 05, 2009
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Please see my tip at http://www.fixya.com/cars/r5821173-doesnt_car_start_gasoline_engines . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
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