i just put in a new engine, am pretty much done running it in, but it was running rough for a little bit then seemed to be fine, and after changing the coilpack its doing the same now (intermittently). i've changed spark plugs, checked leads, new fuel filter. all sensors on the engine are new. just not the intake or exhaust related ones.

it seems that when its cold its fine, and when it warms up it gets worse.
i'm thinking its spark still though, because it backfires straight away on gas, and i know how touch gas is with good spark.
ANY IDEAS? is there a chance the coilpack i got from the wreckers was a dud and it is the coilpack? leads were 3.7k or 37k (for dual fuel) i'll double check tomorow. one thing i did notice was it was worse after putting in the coilpack from the wreckers.
cheers, adam!

How are the engine mounts????...are all the earths on??? Whats the fuel pressure like???

grounds fine, mounts fine, and the its rough on petrol and lpg, so i'm assuming pressure isnt an issue.
once the temp gets to the O in the NORMAL written on the guage it starts to even get rough at idle.
i might take it in for computer diagnostics tomorow. hopefully that will shed some light on it