il start from the begining,i bought the car a few months back with the head off, the gasket had gone. so i had all new gaskets inc a HEAD SKIM. new PLUGS, LEADS, ROTOR ARM, CAP.
started fine but was smoking alot. took it up the road and it cleared but under load it cut out and back fired. ive lived with it ever since. ive since also replaced- b-r-b ecu for a chipped b-r-w ecu, fuel pump relay (brand new ford) i also checked the timing.
i eventually took it to engine advantages in witham to be rolling roaded, told me it was breathing heavy and loosing power through cylinders 1 and 4 (cyl leakage test) afterwards he roadtested it and said it was almost definately the distributor itself. so yesterday i fitted 1 i got off ebay(40 quid 1) and set the timing again. and it still bloody does it. it will either just jerk or jerk and backfire, also when it does this the rev counter drops.
i wondered if any1 had an idea, i know it dont help the plugs are getting oiled up but why would the rev counter drop? bit tiresome i know but any help appreciated.