I picked up a cheap XR3 with a 1.8ZVH CVH engine, had a miss fire and wouldn’t rev up properly, checked the compression and it was 120 125 155 185psi (1-4) all the other basic stuff I checked so though maybe head gasket as it also would get warm in traffic. But there appeared to be no oil to water mix.
Took the head off today to find some old bits, 1st I found it to have a KENT CAM vernier (and cam maybe?) what cant be too much of a bad thing, and also some odd scratch marks on a couple of the piston's and all 4 of the pistons have marks where valves have touched. But there aren’t marks on the valves. Possibly the Zetec bottom end mite of come from a Zetec with cam belt failure. Poorly set up vernier? Think I am going to have to get the head tested and see what happens.
Anyone got any other ideas?
Thanks