Acting like one cylinder firing lean.

Put a temp gun on it but pointend it right where the first bend coming off the heads. Just read I should check at a straight line of pipe. also did it when car was off which I know isn't correct but I had an average of 145* on all but one at 115*. Leaner burns hotter so what's up with that? Lol
Will do a correct reading sometime this week after work.
Hyup, engine off doesn't count, but fyi;
With incomplete combustion in the chamber, the charge can continue burning in the pipes.In my experience tho,the temps will be a lot higher, easily double and perhaps triple your readings.