Originally Posted by BraveLil305
Any chance you got a bad tank of fuel? Did you gas it up right before the problems started?
Piss anyone off bad enough they'd doctor the tank?
Is the vacuum advance working? If it was hooked to a manifold vacuum source and it took a dump, there goes the advance at idle, along w/the idle speed.
What happens when you add curb idle? What happens when you advance the timing?
What do the plugs look like? Is there any indication of a too-rich idle, like odor, black smoke? Could mean pluggged idle air bleeds, leaking wells, too high float level. If not too rich is float too low? What about the power valve stuck in the "up" position?
EGR still on it? If so is it stuck open at idle? What about the PCV valve/hose?
How's about the modulator- if it took a dump it can still function, yet there will be a vacuum leak, and possibly pulling in ATF into the intake. Pull the hose and check for ATF, then pull a vacuum on the vacuum modulator can and see if it holds.
Choke unloader functioning? It should crack the choke open 1/4" or so as soon as the engine starts (unloader position). Does the choke open fully after about 3 minutes?
Is there any ignition miss associated w/this?