rog

iTrader: (2)

Ok I have a funny whining noise on boost, I AM AWARE IT COULD BE THE TURBO, but what else could possibly cause this, an air leak, or perhaps even a fuel pressure issue?
Fixed a couple of things the other day and now the car pulls really well only boosting 12-13psi, but i don't want to push it anymore as this is when it starts whining. Turbo was ok before i got the engine rebuilt, is there anyway that leaving it sitting would make it degrade and whine like that???

AlexF

boost leak possibly.

JokerDisco

iTrader: (4)

As above check your hoses.

I had this problem now and again when it came on boost it would whistle like the turbo was on its way out. Found out the problem was the coupling boost hose that connects the throttle body to the charge carrier needed tighting as it was leaking air. This was on my series 2 not a cossie but I would presume the same applies in both circumstances.

rog

iTrader: (2)

Ok cheers, i'll have a look today, i'm also thinking to check the amal valve, how does it work???

bud-weis

i'd be very surprised if its the amal valve, it's basically just an electronic bleed valve.
I think it'll be your boost hoses, remove and refit all 3 and im sure it'll be pukka!

gingerturbo

iTrader: (2)

check your vacume hoses too, it might sound funny but this happend o my m8's 3 door and he found out it was his alternator bearings