Sorry for the late reply guys, computer was busted at home and they caught me tooling around on the net at work, so i lost my priveleges

Anyhoo, yeah the cars buggered again. I turn it on and it sounds like a rexy. i push the gas and it sounds like a van. ive lost some power too, overtakes like a turtle. Any ideas? (remember guys, the only thing i can really do to my car is change the spark plugs

)
The dizzy seemed ok when i looked at it. a little oily on the underside for some reason (it looked like old oil, lots of furry crap in it) but otherwise it looked fine.
EDIT: Oh yeah, I'm getting shitty fuel consumption too, it was like 1/4 a tank to mac fields from blacktown which for me is crap cos when i thrash it it only takes about 1/8 the tank.
2nd EDIT: When i rev the car, it likes to back fire after i lift the accelerator, never used to do it