R25 Sounding Like A Rota!

[Echo_myl]

Hi guys n gals!

looking for some wisdom and what to try next....

My r33 gtst is running rough.... struggles to start without a few pumps of the gas peddle. when it does starts its got a pretty smooth idle.. however when i drive its got NO power... almost seems like ive lost a cylinder.. sounds rough as guts!

so far i have.....

changed new spark plugs, new fuel filter, checked fuel pump, changed coil packs, cleaned out aac valve.

it seems to be something in the fuel line maybe? any suggestions or pearls of wisdom out there?

Thanks.

ps. when i did change the spark plugs it ran near perfect for a single spin round the block.. then went back to driving crap. (if that helps)

[ClutchBurndout-:(]

check your afm

does it run rough under 2k rpm?

[luvpsi]

is it a r33 series 1 or to. and mods list?

if its a series 1 could be ignitor module maybe or it could also be a vaccum leak or intercooler piping leak

[Echo_myl]

1. yes its rough under 2k revs.. once the turbo kicks it goes but not as good as it should...

2. its a series 1

so far mods are simple.. only pod filter and front mount. ... plus earthed the solanoid wire so it runs 7psi all the time.

ill test AFM tonight and let you guys know.

Edited March 22, 2011 by Echo_myl

[bunno32gtr]

Timing belt hasn't jumped a tooth? Check the points on the cam gear.

[PIG747]

Hey mate check your AFM. My mate has a similar problem. If you don't have another one to check it against pull your one out. Remove the glue so that you can take the cover. Then with a screw driver see if you can lift up the connections (the ones circled in the picture). If they lift up then they need to be soldered, the conection comes off when you are driving causing it to kill power.