I was going to begin doings the pressure holding tests, but I think that I'll let the shop who did my injectors check it out first. I had them done recently and the problems started around that time. That fact, in conjuction with the fact the I've been seeing a puff of smoke at startup leads to the problem being a leaky injector o-ring. So I'm going to go that route for now. Thanks for the response though. -Eric