I have 2000 blazer and I have to put starting fluid in the fuel injector. I tried putting a new fuel pump,fuel pressure sensor that goes on the fuel pump, fuel filter,map sensor,fuel injector cleaner in the fuel tank.I don%26#039;t know what else to change or try. All the Help I can get is great, Thank You!!|||Listen to hear if your fuel pump is running when you turn the key to the run position. If it is, buy a %26quot;noid%26quot; light to check if the injectors are firing as you crank the motor.
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Work your way back or forward accordingly, depending on what you find.
If the pump isn%26#039;t running, check the relay. If it is, and injectors aren%26#039;t firing, check crank and cam sensors. Also, the oil pressure sender can interrupt the fuel flow if it%26#039;s faulty. If both OK, check the fuel pressure regulator.
Or maybe all of the injectors crapped out at once.
LOL Yeah, that happens all the time!|||the fuel pump is controlled by the cpu, it is turned on in two different situations.
1 the key was just turned on, it will come on fro about 5 seconds to pressurize the system to regain any pressure during the total key off period.
2 any time the computer sees a tach signal of 400 rpm or more the cpu will turn on the pump again.
if you have a failing computer or a tach signal failure to the computer it will do what you are talking about. if the car starts and runs after a shot of staring fluid, then there is nothing else that it can be really. the relay for the pump works because the car will run after is starts. that leaves only two things to me a tach signal problem or a computer fault ( the timer itself for that initial pulse)|||try checking the fuel injector itself or the wiring to the injector either one of those may have failed.... if all else fails you may have to take it to a certified mechanic some things are very hard to find even to the very experienced back yard mechanic.. good luck man! |||Timing is off, fuel injectors are clogged (the cleaner won%26#039;t clean them).
Spark plugs are fouled, wires are shot, distributor coil is bad.
Lots of things can be wrong - take it to the mechanic.|||Get the fuel regulator on the fuel rail tested. Make sure there%26#039;s enough fuel pressure.|||The injector(s) could be bad. It happens. Easy to check. It%26#039;s in any good service manual and is basically the same for all cars.
