old problem revisited
I first experienced this issue two years ago. It only happens when its really really cold, like below 20f. When I start the car cold, and its warming up, I go through ludicrous amounts of fuel. Literally the tripminder will count up .1gal every ten seconds or so. Its not lying either, I just filled up for 19mpg.
Most of my driving is at 55mph so that's a really sad number. No smoke out the exhaust and no rough running either so what gives? I even have a different longblock than two years ago. Same fuel system and electronics though. Injectors etc.