A friend of mine has suggested yet another mechanic. This guy claims he can find the problem, and even has the ability to re-flash the computer? Are these ECM's reflashable? The engine does not smoke at all, which makes me doubt there is a problem in the valve train. I have sprayed starting fluid around the intake on cylinder #5, with no noticeable change in idle. Mechanic #2 filled the intake with smoke, but found no leaks. For the most part, every mechanic has decided, the problem must be something inside the motor, due to the fact... they can't find anything wrong outside the motor. I have already spent too much $$$ troubleshooting this motor, so now I am hesisitant to send it to yet another mechanic. I am tempted to spend the $150 bucks on an ECM, as opposed to spending it on yet another mechanic, that can't find the problem. I am lost at this point. | 
