All I can tell you is that it drips from the front of the engine area, The throttle body "area" is mentioned. I cant locate the leak. It hits the ground close to the center of the car, between radiator and motor. Thats just a guess. It wont do it today, its too warm outside. When I first noticed it, popped the hood and nothing was wet. I had already backed the car up and saw the drips in the snow. So the exact spot isnt known. So I dont think its E85 related at all. Just a coincidence. I'll report back when its repaired with the official findings, lol. Yeah that makes sense with the throttle body - air only. The only EFI system I ever messed with was on my 78 Trans Am , I added Sniper EFI to it but that throttle body does have high pressure gas in it. Love the way that thing runs!

 

I put a 400 chevy in it and it puts out an estimated 450 hp. That was a fun project and its complete now, inside and out.

 

The way I understand it, P0171/2 are related to rich or lean at startup only indirectly. I think my car threw a P0172 not because it was rich at startup, but because the trim needed to get the mix right once it went to closed loop was deemed excessive. So while P0172 almost surely means it was excessively rich at startup, the car has no way of knowing if it’s rich or lean at startup before the O2 sensor starts working.

It seems pretty important to figure out the exact source of that leaking fuel.

 

Some even inexpensive scanners can read the alcohol percentages. This one is way to high.

 

Car is back from mechanic, he had it close to a week. It never acted up for him. So it's a good news/ bad news- verdict. It runs great, but we still dont know what caused the problem. It was very cold out so it should have acted up. Maybe the purge valve and the new gas was the cure. He didnt charge me anything so thats a plus.

 

Well it took a turn for the worse yesterday. 17 degrees, it started but it had extended cranking time like about double from the starter, stumbled and died. Restarted it and it ran fine. The last week I noticed the longer than usual cranking of the starter by a second or 2. My old truck did this when the fuel lines were failing ( rust) it was a loss of fuel pressure. I had new fuel lines put on last summer. I wish it would just fail whatever it is so I can address the situation. Today, no symptoms, its 45 degrees out. I do not smell gas this time. Nothing is dripping on the driveway. . If I had to guess its a fuel pressure related problem. Being temperature sensitive is making it a strange problem.

 

Dying fuel pump?

 

Under hood EVAP purge valve.

 

It may be a fuel pump going south. The evap purge valve solenoid has ben replaced about 3 weeks ago.

 

Test the fuel pressure, 50 to 65 psi, leak down when you turn off the ignition key.