well after many months of my camaro not want wanting to start. ive finally decieded to try to get it to run. well ive managed to get the engine to turn over with the key. but it wont start at all. wont even try. im not gettin fuel. the pump is good ive conneceted it directly to the battery to try it and it works. the injectors wont send any fuel out. i checked the fuel lines before i connected the pump directly and they were dry. afterwards they had gas in them. i tried to crank the car while workin the fuel pump directly but nothing. again no fuel came out of the injectors. what could be causing the fuel pump and injectors not to work while the engine is turing over?(yes with the key) please help guys. i really need my car up and running again. thanks

 

Check the fuzes for the injectors. You might want to check the voltage going to the injectors as well. Lastly, your injectors could be bad. When my father's went out on his truck, that's what they did. No fuel spray what so ever.

 

thanks... but i doubt thats it. i think it has to do with maybe a faulty sensor or wire or something. but thanks anyways

 

Did you check your ignition module? The injectors get their pulse signal from it. Had similar trouble once, and that was it.

 

no i havent checked.... if the timing was off would that also make the injectors not pulse? also would that cause the fuel pump not to operate? again the pump was not workin either... it was a good pump just not gettin a signal with the key. so the pump and injectors both were not operating. thanks keep the help coming

 

your pump may coming on initially, but shutting off if the engine isn't firing. they are wired to run for a few seconds and then stop if there is no ignition.

 

right u mean it primes right? well its not doing that. well atleast i havent heard it prime. is there anything that could be cuttin the power to the pump injectors and spark? any thing guys?

 

You said you can't hear it priming, but are you sure? The best way to tell would be to hook up a gague and watch for the pressure when you turn the power on.

Did you have the interior apart? There is a ground wire under the driver's seat for the pump. When I installed my roll bar I forgot to reconnect it when I reassembled the insides, and the pump wouldn't turn on.

I don't remember if these cars had an oil pressure relay. It would prevent fuel from flowing in the event of low or no oil pressure.

 

thanks phil. about the interior, i did swap the seat for fouth gen seats. could i have disconnected the ground while swaping them? and i did have the carpet from the rear hatch out too. but not the rest of the carpet. ill check on it and see if i find that ground. how could i find out about that fuel cut off that occurs when low oil pressure? thanks again

 

theres an oil pressure unit mounted right above the oil filter and also controls HEI feed and choke operation also, alot of wires connect to the sender unit there on some models, id check that out for damaged connector or wires, etc. should be able to see it in pretty good view from driver side towards rear of engine down there

 

yeah ive seen that sending unit. i think the wires are good ill need to double check it. was the cutoff feature on the 90 305 tbis? if it was then ill replace the unit. if not then that wont be the problem. but thanks for the info

 

Fast68 hit the nail on the head, I would check that guy. You may want to consult a manual about testing it before you go and replace it....$$$

 

i hate to be a bother. but what kind of manual would i use? because i have one of those book... chilton i think. and it has nothing about that. or am i not lookin in the right place... also lets say its fine or the 90rs doesnt have that feature it could then be an ecm or wiring problem right? also annother thing guys. the engine is a used engine out of an 87 tpi im using the entire long block i guess i should have mentioned this earlier. would the sending unit be diffrent? because the block has the big cylinder that is also a oil sending unit. and i have no plug for it and i dont remember seeing that unit on my old tbi engine. thanks again guys. any more info would be greatly apreciated. oh and i would need a special socket to pull out the unit right? thanks agian

 

well, gets more interesting by the minute. I don't see any trouble with the used block, and the sending units should be the same. or at least you could swap them from block to block. yes, i believe you will need a special socket.

where are you located?

 

im located deep south tx. and im gonna have to nix the idea of swaping the units from old block cus the mechanic already dumped it. i guess ill buy the new unit and hope its the problem. what really sucks is that my gauge has been out for almost a year so i dont know if the sending unit is any good. oh well... just my luck i guess. ill keep u guys posted. thanks phil

 

good luck man. let us know how it all works out.