Hi, l have a 2001 chevy blazer zr2. 4.3 vtec. I have replaced fuel injector system and truck won't start. I spray fuel in throttle body it runs but when stop engine stall. Any suggestions. Thanks

 

Did the truck run without spraying fuel in it before replacing the injectors?

Start by checking your fuel pressure at the Schrader valve. Need to know if you have any pressure there at all, and if so, what it reads with the key on.

 

I will be getting a pressure gauge later. Its was running till it started to jerk on acceleration then fuel leakage on line. Went ahead replaced tank, pump and lines. Then it won't start so thought it was the injectors. Old one was pretty nasty when removed.

 

Ok have no pressure at all😡.

 

First place to start is the fuel pump relay, it's easiest and most accessible. It's in the Underhood fuse box. Locate the fuel pump relay, and swap it with a known good one that matches(I believe the drl relay is the same) try that first and let me know if that changes anything. Make sure you are testing with the key in the on position.

 

There is fuel getting to the injector box. Pulled feed line and hooked hose to it and turned key on and fuel is flowing. Switched relay still same.

 

Still same no pressure but getting fuel.

 

How fast is it flowing out, it should be coming out at a pretty good speed. With the line hooked up, and key turned to the on position press the Schrader valve in a little bit. Does fuel spray out or just dribble/run out?

 

It sprays

 

Are you certain your pressure gauge is connecting all the way?if it's spraying out of there, you definitely have some pressure. It should be registering on the gauge