Hard starting with ProCharged GMC Sierra
#1
Hard starting with ProCharged GMC Sierra
We installed a ProCharger D1SC in a buddy's truck a few months back, but the tuner hasn't been able to figure out what is causing the hard starting he's experiencing.
He's using FAST 65lb injectors. They were a little too small, but we were able to get them to work with a set of aluminum spacers.
I'm guessing it has something to do with the injector values, but I'm still not sure. I was hoping someone here has seen the problem. Basically, the truck takes several seconds to turn over. It sounds terrible. Once in a blue moon, it'll start right up... but that is very rare.
He's using FAST 65lb injectors. They were a little too small, but we were able to get them to work with a set of aluminum spacers.
I'm guessing it has something to do with the injector values, but I'm still not sure. I was hoping someone here has seen the problem. Basically, the truck takes several seconds to turn over. It sounds terrible. Once in a blue moon, it'll start right up... but that is very rare.
#3
As for sounding terrible, it sounds like it's an old flooded carb or something. cranks for 4-5 seconds before starting... sometimes longer.
#5
im lost on the spacer part????? sounds like you need a differant tuner ... Cars never leave untill the problem is figured out or the tune is right!!! End of story
Ls1 edit do people still use that??? lol jkn...
Try and get a log or the tune file and post it .. Im sure one of us can get you on the right track!
Ls1 edit do people still use that??? lol jkn...
Try and get a log or the tune file and post it .. Im sure one of us can get you on the right track!
#6
Try and get a log or the tune file and post it .. Im sure one of us can get you on the right track![/QUOTE]
Yeah, that may be exactly what he ends up doing. He's not too worried about it, but it has got to be killing the starter. At the very least, it's a bit embarrassing. The truck is an absolute monster, though!
#7
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I would say those spacers are your problem... you can't pull the injector up out of the hole and expect it to spray the same... put the proper injectors in it and I bet it starts correctly.
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#9
and imo those spacers look like they would be used to convert from short style to long style ... ive heard in the past that those spacers effect the atomization of the fuel spray.. what is your intake and fuel rail set up?
#10
**EDIT**
The spacers are on the top. Nothing but straight fuel pressure up there.
They are used to convert short to long style, as despite all our careful research, we STILL got the wrong size injectors. The intake and fuel rail are stock. The injectors were the only part of the fuel system that was changed.
Last edited by Flapjack; 06-13-2012 at 10:05 PM.