Quote:
Originally Posted by RANDY P
I'd think exhaust leak or an intake manifold leak-
|
Was thinking exhaust leak that seals off after heat expansion at first blush. I have owned a car with a cracked exhaust manifold that made boatloads of noise until warm then ran (sounded) like a sewing machine. Mine only sounded bad - it did not "feel" like a miss.
Carbureted intake manifold leak could create a miss-fire or weak-fire at a specific cylinder. Given heat that is in the 200F (intake) vs 500F (exhaust) range I am not seeing 200F heat sealing off an intake leak (intake to head) that is big enough to create a noticeable miss. Just talking. OP could always try the carb/brake cleaner spray test.