Two question..

[tucsontattoo]

Thanks Stan and Band Owl, will let you know how it goes. will look into the infered gun idea too, sounds reasonalbe. Would give you a real quick read of each bank three `or four times each right at start-up. Think I will start it and read back and forth between banks as she is and see if there is a big difference. then again after the rack is run. Good idea!!

                                                    T.T.

[Barn Owl]

I know nothing about this, but I am just going to throw this out there. I would think that the reason the mechanic tested the exhaust manifolds at startup is because that would be the only time you could put your hands on them.  With an infrared thermometer you could read it even at full operating temperature, and still detect a difference, if there is one. Now that we have been talking about manifold temps, I can remember seeing mechanics doing something similar (hands on pipes) to motorcycles to see if they were getting a misfire or had carbs out of adjustment.