Originally Posted by mjr46
also make sure the car is not running hot at all, things that cause pinging/detonation...= overadvance timing, carbon build up on chambers and pistons,, wrong heat range plug can lead to issues also, to lean a mixture(vaccum leaks can cause issue) and if car has egr still, malfuctioning egr can cause issues and bad gas or low octane rating can irritate the prob.
when the old engine was acting up it was over heating ie blown head gasket
so it has a 3 core rad. new water pump and i know i should hav one but it has no thermostat in it, i hav a factory guage and when it over heated on the old motor it showed corectly on the guage, now it runs at the first line to the N depending on how hot it is out I live in Florida and with the a/c on it runs at no higher than O never leaving the O
no egr it has a spacer plate, many tanks of gas threw this motor
and the plugs I got from the ford store and the guy said with my setup these would be the best plugs, him knowing I hav a 1985 ignition and a 200 explorer motor with GT40P heads
Im going to look for a vaccum leak again tonight and try n get a video too
thanks for all yur time with me mjr46