bBody22

My 94 Lt1 seems to not be getting enough fuel when i go to start it, i have to pump the gas and hold it to the floor for it to crank. could this be the o2 sensors? Fuel regulator?

FAD2BLK93

Could be reg, do u smell fuel in reg line? Do u hear pump priming when turned on? Check fuel pressure. Could be weak ignition as well.

quik95lt1

iTrader: (7)

fyi holding it to the floor while cranking shuts off the injectors......its a flood clear feature

bBody22

no i dont smell fuel in reg line, yes i hear the pump when i first turn the key on. when the motor is cold it cranks right up

warriorcustoms

iTrader: (10)

could be a few things But Id start with checking fuel pressure at the rail its gotta be 43.5 key on & hold that psi!!! Last time you changed the fuel filter & done a complete tune up???

jakemussman

iTrader: (1)

Maybe the low resolution signal wire? mine was bad and the car would start but die in a couple seconds, could only keep it running by giving it throttle. Found the problem by chance the wire had an internal break.

quik95lt1

iTrader: (7)

also what ur describing is a very common issue ive seen multiple times..........the check valves in the pump fail and the systems dont hold fuel pressure......they crank and crank before starting.....i bet if you cycle the key a couple times then start it it will fire fine....

bBody22

when it first started that would work but here lately it doesnt it has gotn worse and i had to start giving it sum gas

bBody22

where is that located (low resolution wire)

GMRACER13

iTrader: (1)

Starts fine cold and requires you to floor it (flood clear) when hot. Sounds like a bad coolant temp. sensor (the one in the water pump).

warriorcustoms

iTrader: (10)

^^^ it would run like **** if the coolant temp sensor was the cause!!! Id put a Racetronix 255lph & hardwire kit in it Then your good for many mods later on

FAD2BLK93

Check the pressure. I see a fuel pump swap in your future! Really easy with the trap door mod! I can swap one in 22 mins start to finish. Had to do it a month back on the side of the road. Wasn't the problem...MSD 6al was randomly shutting down on me. Not the first time with the MSD, but it will be the last time i ever use one now. Stock setup will have to do!

bBody22

fuel pump is new about a few months old not saying it couldnt be the problem tho