I believe I have a serious vacuum leak. Alright, I'm guilty! I used RTV on the upper intake, throttle body, and EGR tube-to-plentium in conjunction with the used gaskets. I hear a deafening whistling noise, car doesn't idle w/o forcing the car to rev @ 2k rpm, when it does idle, it runs kinda rough @ 1750rpm. Yeah, vacuum leak at t.body, no brainer, eh?
Reason I'm rambling about this... if a 2.8l V6 were to have a vacuum leak as described, would that cause the exhaust manifold to glow red? Or is there something else going on? Just replaced EGR valve & tossed other OEM injectors as 4 of my 6 original ones leaked.