[shorod]

Is there a time frame of sitting that usually causes you to have a problem?

You may have leaky injectors or a faulty fuel pressure regulator or something that is causing the cylinders to fill with fuel if it sits for 10 minutes or so as the fuel pressure bleeds off. The cylinders fill with fuel, causing near hydro-lock and the starter to struggle to turn the engine over. If the engine sits for a few hours, the fuel in the cylinders either evaporates, soaks in to carbon buildup on the valves, or leaks past the rings.

When the car finally does start, do you see momentary black exhaust? After it has sat for an hour or two, pull the dipstick and see if there is an odor of raw fuel in the oil.

-Rod