Hopelessly Confused Posted March 10, 2007 Share Posted March 10, 2007 Hey guys, I cant seem to get my engine to fire up and im not sure why. I know that im getting spark on my plugs. Also there is +12 voltage to the injectors and I have fuel pressure but it still wont work. Does anyone have any ideas on what could be wrong? It will also fire up if I spray fuel in the air intake but then die when that fuel is burnt. There is also no fuel coming out of the fuel return, im not sure if that is important or not. Any advice would be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
datsunlover Posted March 10, 2007 Share Posted March 10, 2007 Um.. what engine? What kind of fuel syetem? Generaly sounds like a fuel problem... ie: pump is not working/has low presure but this question needs more background info to diagnose.... Quote Link to comment Share on other sites More sharing options...
getZ Posted March 10, 2007 Share Posted March 10, 2007 Check to see if you have fuel pressure to the rails. Remember fuel injection regulators control the output not the input. They bleed off excess pressure not restrict input fuel pressure like carbureted systems. I like the mechanical guages that just use male pipe thread to attach to the rails. Simple, relatively cheap and they work. By the way, you won't get fuel to the rails if you hook up the fuel lines to the wrong input/output. Quote Link to comment Share on other sites More sharing options...
280zwitha383 Posted March 10, 2007 Share Posted March 10, 2007 Can you hear the fuel pump going? Quote Link to comment Share on other sites More sharing options...
Guest sbcperformance Posted March 10, 2007 Share Posted March 10, 2007 check the fuel pressure regulator. prone to go out on gm's also it is about the cheapest part out of the injection system so I would definetly start there. Quote Link to comment Share on other sites More sharing options...
Hopelessly Confused Posted March 10, 2007 Author Share Posted March 10, 2007 Thank you guys, im an idiot I had the imput and the output backwards. I have been trying to get it to work for a couple of days. It fired right up when I switched it and it sounded good. Quote Link to comment Share on other sites More sharing options...
getZ Posted March 11, 2007 Share Posted March 11, 2007 Don't feel so bad. I did the same thing a few days ago on my camaro. That's why I brought it up. The only reason I diagnosed mine right away is because I have a rail mounted fuel guage. I could hear the pump turn on yet there was no pressure. Little things like that help diagnose problems Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.