Hi all. I've got a P reg Escort with 1.6 Zetec engine in it. She's done 83,000 miles.

The rpoblem I'm having is misfire on cylinder 1 which is wobbling the whole damn car when idling. She's had new sparky's, ht leads and second hand injectors that a mechanic fitted for me. When he fitted the injecters he found that the problem was being caused by low compression in the cylinder 2-4 are all at 150 psi and 1 is at 50. It's got at least half a litre of the wrong grade oil but don't know what's underneath that.

He's suggested an engine flush and oil change along with filter but isn't too sure that it'll work but we're gonna try it. After that he reckons if it don't work it would be cheaper to stick a new engine in.

Another mechanic reckons cause no oil is being burned and no smoke etc it is probably an exhaust valve or head gasket needs changing.

The temp guage is constantly readin sky high and the coolin fan isn't kickin in.

I don't know one end of an engine to another and have ran out of money.

Can anyone suggest something that may have been missed by both mechanics?