How do I fix my 99 Chevy Blazer?

Question

At first we thought it was the fuel filter. We changed it and it is still doing what it was before we changed the fuel filter. It acts as if the lines are blacked by something. It will crank but it won't stay cranked. One person told me that it isn't getting fuel to the throttle body. Another person said that it sounds like we need to replace the injector assembly on it. I need help bad. It's my only transportation. Please help me.

Answer 1

Use some starting fluid in the intake to verify that it is a fuel problem. If the vehicle starts but shuts off after a few seconds it's most likely a fuel problem. Can you hear the fuel pump working? Have you checked the fuel pressure? Your explanation is a little to vague to pin point a specific problem.

Answer 2

You say "It will crank but it won't stay cranked". Does this mean it doesn't start, or it starts then dies quickly?

Anyways, the first thing to do is make sure it is getting gas.

If is is multi-port fuel injection (which I would think it does), then there should be a shrader valve on the fuel rail. It is just like the valve on your tires. Remove the cap (if there is one), and press the valve. But LOOK OUT, when there is 50psi fuel in there, it shoots several feet.

Release the pressure, then turn the key on for about 15 seconds to pressurize the system again, and check the valve again. If it has pressure again, you know it's getting fuel. Of course, an injector could be plugged.

Then the next thing would probably be to check the spark. Are the plugs in good shape? The wires?

Answer 3

Fuel pump is bad.

Answer 4

Guessing won't fix it. I don't know how a truck "acts" like the lines are clogged. You need some equipment and knowledge to test the systems. If you need the truck, you're wasting time letting friends guess what to change next. It could be something simple.  

Answer 5

everyone goes for fuel problem...if i look at 100 cars with your problem 95 have an ignition problem...its a 99 ever been tuned up...plugs,wires that kind of stuff...was check engine lite on...there's ur sign,

Answer 6

Test the pump's flow & psi before you start throwing parts / money at it. You can test  the injectors also.