97' Z28 show project

the clicking sounds insures that the fuel is being supplied to the injectors to prep your engine for the start most people dont know that you really need to wait a few secs after you turn the key befor you turn it the rest of the way just to let fuel get to the engine to allow a good clean start. Its a comon reason for rough starts not saying its yours just the most simple cause thought i would through it out there for you.

97z2801ss

yea I didnt kno that either

archemedes

the fuel pump is on for about 5 seconds (the clicking is the relay shutting it off) the thing with fuel injection is it should hold pressure when off, if it loses pressure, you have something wrong-fuel pump-injector-or regulator

97' Z28 show project

I agree with the holding pressure but from my 2 years of auto school i would still have to say the the clicking is turning the pump on and it is herd right after the key goes to the on position. And pressure dosent mean much if you jump in and turn the car directly over with out giving the pump a chance to kick in. But i could of been taught wrong too my teachers did seam alittle out of it some times i think im going to look into it now thanks for the input.

archemedes

Gm service manuals all say that ticking is the pump shutting off (I was a GM tech)the big thing with this is he's running rich, not lean (gets black smoke upon startup)

97' Z28 show project

cool cool ill have to look into it i dont know why my instructers would of said something differnt. Learn something new every day. Im a army mechanic so all i have worked on since i got out of school has been deasals so a little out of tuch on the gas cars latley

DMR94

so what can it be it take like 7 sec to start last time i pushed the key to front and let it there for 1min and then started but it maid no diffrence

97' Z28 show project

is there black smoke on start up like archy asked?

DMR94

yeah sometimes and it smell like if the gas is not being burn sometimes

archemedes

have you pulled any plugs? I just wonder if when it first starts (actually just before) if any plgs are wet, if so that injector is stuck open, or the plug isn't firing

97' Z28 show project

Yea i would say pugs too sounds about right

DMR94

well i change them a while back and they seem ok to me
i just put them new last month and i don't use it that much
so it can't be the sensor thats behind the distibutor

97' Z28 show project

not driving is just as bad for a car as driving it

DMR94

i do use it but the AC works when it wants to and the passengers window dosen't work so it gets pertty hot when ever i use it. i use it like 5 days out of the week.