fiesta rs 1800 zetec probs
hi everyone, i'm after a bit of help regarding a fiesta rs 1800.
i got this car a few weeks back with a knackered engine,it ran but was knocking.
i sourced one off good old ebay which the seller assured me was 100%.
i fitted this engine with all manifolds sensors etc off the knackered engine, started it up and it was running rough like on 3 cylinders and fuel was seeping out of the exhaust manifold on no 1.
today i took no 1 plug out disconnected the coil, crancked it over and quite a bit of fuel shot out of the plug hole.
any ideas what the problem could be?? or what i should check. a faulty injector or bent valve maybe? i'm hoping it's something simple as i don't fancy taking it all out again.