Question about 1996 Chevrolet Cavalier

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No crank or fuel to injectors - 1996 Chevrolet Cavalier

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  • Anonymous Apr 21, 2009

    i changed the o-rings on one injector and now it wont start. it will click from the starter but that it.How can i fix it

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I changed the o-rings on one injector and now it wont start. it will click from the starter but that it.How can i fix it

Posted on Apr 21, 2009

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2002. Why won't it start?


Did you check voltage and ground for the other injectors to see what your losing, voltage or ground? Do an ohms test on all fuel injectors, see if reading is close to the same? I'm just wondering if you have a faulty fuel injector? The ohms reading should be close to the same for all fuel injectors. #4 may have a problem? Did you try disconnecting #4 injector for a second, to see if others would start working?
Can you check for applicable trouble codes? To check codes, yourself, at the least, you need an obd2 code reader.
Are you missing anything else, engine cranking you have good spark at all the spark plugs? You used a gage and you have proper fuel pressure, engine cranking?

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Kevin:
First, check your fuel to make sure there's no water in it. Next, find the fuel system bleed port located near the fuel injector. loosen the bleed port bolt and have someone crank the engine. When fuel flows out of the bleed port in a steady stream (no bubbles) close the bleed port and start the engine. If it will not start, loosen one of the injectors and crank the engine to see if the fuel injector has fuel and if it is pumping fuel. You may have to loosen each of the injectors one at a time to get fuel to all of the injectors.

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How do i ck if fuel pump defective or no pulse at injector no power.


If you have fuel coming out of the lines when you are cranking the engine then your fuel pump is working. You should only get a small burst of fuel when you first turn the key on and then nothing while the key is on, the ECU only tells the fuel pump to turn on when cranking and when it can see cam and crank sensor signals while the engine is running. The small burst of fuel you may or may not have experienced is only to prime the fuel rails. To test your injectors, you can buy what is called a "noid" light. They have them at most stores that have a good tool/automotive section, such as sears. You unplug one injector with the engine off, plug the noid light into the injector connector (harness side going to injector). Then start or crank the engine over and see if you can see the light pulse on and of very fast. You may need two people due to limited visibility while cranking the engine. Repeat this for the rest of the injectors. If you have an "ohm" meter, you can ohm check the injectors by disconnecting each one and touching the pins inside the connector cavity on each injector. The ohm reading should read between 5-20 ohms. I hope this info helps!

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check for air in the system . Bleed out at all bleed screws . crack the injector lines at the injectors and continue cranking until diesel drips from the nut. tighten and continue cranking. Check for fast crank speed and glo-plug operation

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1 Answer

2000 volvo s80 crank no start?


If it has fuel in the rail that doesn't mean the injectors are delivering it to the engine, that is called injector "pulse", this can be checked with a little neon light tool called a "NOID" injector tester, you plug it into the injector connector and crank the engine over, it will flash if the injector is working and ionjecting fuel. The tool is very cheap. The loss of power to the fuses is likely a defective igntion starter switch.

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Runs terrible, p1391 is the code, replaced computer, replaced distributor, replaced crank sensor 2 times, new wires and plugs, new timing chain set, great compression,tps, ais, map, all replaced....


since you've replaced all the expensive components 1st.i suggest you look towards clogged fuel injectors next.try some sea foam,add it to your fuel tank to clean the fuel injectors.your computer tells the injectors and the crank sensor tells them when to pulse. you may only have partially clogged fuel injectors or water in the fuel.the seafoam will dry up any moisture in your fuel tank and also unclog fuel injectors. lucas fuel injector cleaner is what i usually recommend,but your issue call for extreme cleaning. try the seafoam,it costs $7.99 per bottle and treats 25 gallons of fuel.follow the instructions on the bottle.but if you suspect alot of water in the fuel tank,i suggest clear rubbing alcohol !/2 bottle to your fuel tank directly.it will not hurt the engine,but will remove excess water from the gas tank. thank you,for choosing fixya.com!

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MY TRUCK CRANKS BUT WONT START , AFTER A CAUPLE OF TIMES , THAT HAPENS EVARY SO OFTEN. CANT YOU PLS HELP ME


CHANGE FUEL FILTER CLEAN FUEL INJECTORS.MOST OF THE TIME IF FUEL INJECTORS DIRTY WHEN YOU TURN OFF IGNITION FUEL INJECTORS WILL DRIP FUEL FLOODING ENGINE MAKING HARD TO START.POUR BOTTLE SEAFOAM TO A FULL TANK OF GAS.IF CRANKING TIME TAKES 2 TO 3 TIMES. HAVE CAMSHAFT SENSOR AND CRANKSHAFT SENSOR CHECKED WITH A SCANNER.

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Check the fuel pressure at the filter. Odds are the lift pump, located below the filter, is toast. Continual cranking of the motor with a bad LP wil cause the injector pump to heat up and burn out. Replace the LP and fuel filter. Bleed the system by cracking the inlet to the injector pump and bumping the enigine over so the LP will run. Once you have fuel at the injector pump, crack injectors 1,3,and 4. Crank the motor for no more 6 or 7 seconds at a time until it turns over. Give the pump time to cool for a couple of mintues between cranks. This process is easier with two people, one to crank and the other to watch for fuel and tighten the injectors once it starts. If the injector pump is fried at this point from cranking with no fuel, the motor should idle, but will stumble all over itself when the throttle is applied.

-Brandon

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