Slow R33

[skyline33]

A friend of mine has an R33 GTSt 97 model, I drove it the other day and it seems to bogs down once it reaches 2000rpm then the rpm increases very slowly. as if something is holding it back.

he changed fuel filter. and the turbo seems to be boosting fine.

I was thinking the throttle body maybe dirty, what do you guys think?? any ideas

[nismoman18]

ur air meter could be dirty, how slow is it ? sounds like a real problem.

[vendetta]

is it firing ok......i had a similar problem in my old pulsar et turbo would really lag once boost kiked in.....chek your coil and distributor could be rusted out or dirty.......i cant honestly help u much be better if i was there to hear it and tst it but hope this might help.....

[skyline33]

thanks guys, the acceleration is a shocker it bogs down bad. but it starts fine and idles no problem and drives with out cutting out or anything. I'll try to clean the afm and check the coil packs

[vendetta]

yeh sounds a lot like the problem i had like boost would kik in but it just wouldnt go anywhere..goodluk mate

[WazR32GTSt]

vendetta...that signature would have to be one of the most rediculous things i have read on a car site. makes you look like like an idiot before people even get a chance to judge you...

on the topic of the thread, it could be the AFM or even the air filter if it is dirty and not enough air getting through. Also maybe injectors dirty - run some injector cleaner through before pulling things apart in case its something small. try fiddling with the throttle polition sensor (there's a thread on it) as well as this could be the problem.

Waz.

[dan_the_man]

hahaha his signature made me laugh. You cant win friends with salad

[KamikazeR33]

could be a boost leak somewhere?

[chopobo]

check ecu

[skyr33]

Why not to do the most logical thing and check for error codes?

[_turtle_]

check the clutch. could be slipping.

[pushead]

ahmed, check the spark plugs dude.. make sure the leads are nice and tight. It might be firing 4 out of 6 plugs as a result, you will loose heaps of power. Hey.. it happened to me

[skyline33]

thanks everyone next time I see the car i'll check it out

[akeenan]

vendetta...that signature would have to be one of the most rediculous things i have read on a car site. makes you look like like an idiot before people even get a chance to judge you...  

agreed!

You cant win friends with salad

haha classic

[skyline33]

we took everything apart and the rubber hose coming from the turbo to the pod filter was loose we tightened it but still. when driving it i feel like there is too much air going in or something.

it goes a bit better but still it still feels abit ristricted in power. we changed the spark plugs, cleaned the afm, changed the ecu .

next step is changing the coil packs. any other suggestions.

[hippy]

get a dyno tune

[KamikazeR33]

i still think its a boost leak

check the zaust manifold... sometimes they can crack

but i dont think ive ever heard of a standard one cracking

could also be loose from the block or a gasket is blown somewhere.... check both sides of the equation.... but if its when its on boost id say 90% chance its a boost leak or something similar ahmed

[skyline33]

thanks mate we'll try to have another look on monday

[skyline33]

took everything on the right hand side of the engine apart and put it back together, I noticed there is a minimal amount of oil in front of the turbo but there is no shaft play or anything. and defenitly there is no air leak cause i checked everything

the car has improved but still i feel like the engine is restricted its not as free as it should be. tomorrow we'll have a look at the fuel side of things (fuel rail, injectors)

anyone have any other ideas??

I read something about the o2 sensor sometimes becoming faulty where is that located and can that be the problem ?

[skyline33]

the problem basically is on acceleration its very slow on acceleration, once the desired speed is reached its fine and idles ok.