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[GUN32R]

Guys

Recently had the bad news that the engine in the GTR i have owned for under 9 months is on its way out - odd when it was re-built 6000 km ago (4000km before I bought it) with all the usual stuff - CP forged pistons and rings, ACL bearings etc etc (no head work though).

After getting new Link G4, SARD 700cc, cam gears - the car was pushing out 253awkw - dissapointing given the rebuild work and hi flow steel bearing turbo upgrade.

Anyway - after getting car back from mechanic it starting running very badly, wouldnt accelorate past 3-4000 rpm with foot down - as if it was miss firing? Was told it was fixed - something to do with a hose going to the "chalk box" coming off. On way back from mechanic it started again. I have no idea what a chalk box is - and neither does Google.

Can you guys point me in the right direction.

[R31Nismoid]

Carbon Cannister he means taking an educated guess. Mine is a black tube, size of a medium Milo tin in the engine bay - not sure where/how big a GTR one is

Although im not overtly sure that would cause it... Depends how things are connected on your car

Question though, why 700cc injectors and so on just for steel wheeled stocker's???

[GUN32R]

Carbon Cannister he means taking an educated guess. Mine is a black tube, size of a medium Milo tin in the engine bay - not sure where/how big a GTR one is

Although im not overtly sure that would cause it... Depends how things are connected on your car

Question though, why 700cc injectors and so on just for steel wheeled stocker's???

Thanks - makes sense

The link, injectors and cam gears were all done at same time - Turbos, whilst originally stock, are now N1 in size. original injectors needed replacing so thought may as well get the bigger ones given that I was chasing +300kw - until i got the bad news

[R31Nismoid]

N1's will only just max stock injectors (440)

[Moodles2]

My hoses used to blow off my carbon canister, made sure to hoseclamp them down.

[Duncan]

you really shouldn't be getting enough pressure at the carbon cannister to blow off the hoses. does the dipstick pop out as well? have you done a compression test on the motor?

[MrStabby]

First ring the mechanic back and verify he was talking about the carbon (aka charcoal) canister.

IIRC the canister will have two hoses connected - on for the valve (round thing on the top, receives a vacuum signal to actuate), and one that connects to the contents of the canister (which holds fuel vapour). Just pinch them both off and go for a drive - that will tell you if there's a problem or not. I'd say if there is a problem it would be similar to any other sort of vacuum (and therefore boost) leak. The canister is right next to the power steering pump, as nismoid described.

If it doesnt make any difference, try a different mechanic.

[R.3.2.G.T.R]

does the bottom nipple of the the carbon cannister connect to anything?