static88

Ok, im a little irritated about this issue. I have an 04GS300 with a GTE swap. After i refuel my car, while still at the gas station, I have to crank and hold the key while repeatedly pressing the gas pedal and almost flooding the motor to get it to start. Also, if i dont raise the rpms to about 1200 and shift the car into gear immediately after successfully starting the car, it'll cut off and I have to do it all over again. It only does this right after refueling. Any other time, it starts the first time around with no issues. Has anyone else had this issue? if anyone can help, id really appreciate it...

Mr Jokster

iTrader: (8)

We're not in the '50's. Why are you pumping your throttle? That does nothing. If your engine is flooding (you smell it right), its because its not igniting. You probably have a fuel pump problem.

SC400slide

iTrader: (11)

Sounds like a fuel pump problem

static88

@Mr Jokster: pumping the throttle is the only way the car starts after refueling. its the only time it does that. i dont wait till its low on gas to refuel, and it still does that.

Mr Jokster

iTrader: (8)

Our cars are fuel injected, not carborated. pumping throttle ONLY opens and closes the throttle body, no electronics involved. Its purely coincidence.

jcat_350

sounds like fuel pump...if the fuel pump is good, the fact that it's right after refueling would then lead me to evap system.

however, the fact that you need to put the engine under load to keep her running again points back to fuel pump.

For ****s and giggles...whens the last time you did a fuel filter?

kdick91

When the car detects the throttle above a certain percentage (I always set it at 70% on the cars I tune) during cranking it does what it calls a "flood clear". Makes perfect sense to me. It's an option in all the tuning software I have used.

diagtime

jcat was onto something with the evap system. i suspect flooded charcoal canister.

However, i have no idea what parts of the evap system you have hooked up with the GTE swap. I'd say next time you fuel it up, pinch off the evap Purge line and see if it starts normally. The purge shouldn't really be turned on when you first fire it up but with the swap, I don't really know what's going on. But i do know that evap problems can cause things very similar to this.

naluloa

I have the same issue on my GS400 and from what it sounds like, a stuck open EVAP purge valve is causing vapors to create a flood condition in my engine, and the only way to brute-force through it is to clear the flood condition by pressing the accelerator all the way down before starting?

I will also be replacing my EVAP valves in the meantime.