I have a '87 TII that i just put 720cc Venoms (Stock Comp) in and they seem to work great. But now with the wether being warmer in michigan were i live it is starting Extremly hard or not starting at all only when hot. The car Starts almost emiditly when its cold out but not after its be warmed up and it is hot out side. I am really have no clue on this one, thanks alot.

 

No idea really, mine does the same thing with stock injectors. It really pisses me off. Flooding maybe? Someone suggested my MAF sensor is bad...I hope someone chimes in

 

yeah, i had flooding isues w/ my car befor i got new injectors. i will check the MAFS. My car will start when hot when under full throtle but not if the throtle is not pressed

 

Full throttle when you first crank it over hot, or after it doesn't start normally and then you floor it? Might have to try that...

 

i start cranking the engine as soon as the pedal hits the floor

 

And it starts right up?

 

check your compression, hot start problems usually occur when you have low compression or leaky injectors may be the ones flooding your motor.

 

my motor is prolly **** out then cuz i just put new injectors in it

 

The MAF doesnt play any part in the vehicle starting. Under 500 rpm's the computer sends constant fuel to the motor.

Did you have this problem before you put the 720cc injectors into it? You are still running 550cc primary injectors right?

 

All of my Injectors are 720cc, and i had leaking injectors so i decied to up-grade. you could smell the fuel in the exhaust when i had my 550 in it when it ran because they leaked so bad.

 

There you go. You need something to tune your fuel with! You're running STOCK ecu with upgraded higher flowing primary injectors, with no way to tune them. Your upgraded injectors are flooding your motor with too much fuel on start-up.

What are your mods? Do you need 720cc primaries? Im pushing close to 15lbs of boost and im still using the 550cc primaries with 720cc secondaries...... too much fuel flow man....

 

Post of the YEAR!

 

I have Intake, exhaust, and some Phat plug wires, but thats it. i did plan on getting a boost gauge, BOV, FCD, and boost controler to open the stock turbo all the way up.

 

Ok? The problem still exists that you're running too much fuel through those 720cc primary injectors, be them low OR high impedence. Get an SAFC or an ECU upgrade to be able to let the car know how much fuel to give, or downgrade to new 550cc primary/720cc secondary injectors and an Rtek 1.7 chip