Hello all,
Occasionally when I park my '85 GSL-SE facing downhill, the engine will be flooded, so it won't start until i disconnect the fuel pump (I've added a "disconnect" at the rocker panel where the wires run, left of the driver's seat.) I then crank the engine, it starts then runs out of gas, reconnect the wire and it runs fine.
Is there some sort of gas valve issue going on here, where gas is being siphoned from the tank if the car isn't level? Is there anything I can check?

 

off the cuff, i would say leaky injectors, but i can't see how they care if the car was parked on a hill.

maybe leaky injectors and some kind of issue with the tank vent system?

 

Pull the oil dipstick - does it smell like gasoline? If yes, you need to change your oil right now, as it's been diluted and won't lubricate your engine bearings well, ruining your engine.

As to the flooding when nose is pointed downhill - what kind of angle are we talking? You're going to need to visualize the height of he fuel rail at the front vs. the height of the fuel tank in the rear. If the fuel pump is the only restriction to fuel flowing by gravity, then a significant angle would be required to allow the fuel tank to drain toward and past the fuel injectors. Yes, leaky injectors can cause flooding, but your fuel rail only sees pressure when the pump is running. On shutdown, the 42-44psi of fuel pressure can leak past leaky injectors for awhile, but once the rail pressure hits 0 psi, the leaking stops.

Can you park it facing uphill until you can get your fuel injectors rebuilt?

 

Hi guys,
I typically park it on level pavement, without a problem. Only occasionally on a slope.
I should mention (although it may not actually coincide with this issue) that I've been adding Techron Fuel System Cleaner to the gas, in an effort to "un-gunk up" the fuel level gauge, which drops to zero at half-tankful (the level the gas was at when I stored the car for the winter, a few years ago.) It got gunked up over that winter. So far, the techron hasn't helped that. But,shouldn't the injectors be "clean" from running fuel system cleaner through it?
The dipstick smells like oil.

 

the simple answer is no. it's better to have them professionally cleaned and rebuilt.