right, i drive a 1992 orion, with an rs2000 conversion.

the engine has never idled straight since i got it, and i cant seem to find why.
i have replaced the coils, sparx, leads etc, and changed the ecu too, its done the same without a chip, with a powerchip and with a superchip(current), its got a brand new iscv, everything plumbed in fine, no leaks anywhere.

only fault i know of is cylinder 3 is 2bar down on compression test, 12 instead of 14, but it uses no oil, or water, and fuel consumption is fine, spot on as it was running lean when i got it, runs fine now, excellent drive but will not idle.
no internal mods that i know of.
anyone know why it might not idle???