Some more interesting info to think about. But, it still seems nebulous, and no real solid way to diagnose for those of us without a professional shop at hand. I'm inclined to believe Groovyagain73 and 2004LB7 about their diagnosis, and I think that injectors are the real issue, but from my viewpoint it's a mighty big roll of the dice. I mean, we're not talking about whether it's a battery or an alternator (relatively less expensive parts to experiment on) we're looking at upwards of $ 3000 or $4000 or more, even to do it yourself depending on the kit you buy. For such an expensive, invasive and time consuming fix, the pros should have far more solid testing procedures so we know what is causing the $5000 problem. I'd rather do it myself, but I still have no real certainty that it's injectors. What if you tear open your engine and replace all your injectors and the problem persists? There must be a test process to follow to discover what the actual issue is. Is there, or does this poor starting issue all finally end up as an educated guess? (my apologies for whining)...JG