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Help no Boost
Posted: Thu Jul 27, 2006 5:50 am
by cyberjo
Hi all just got the car on the road and find that I have no boost, boost gauge read 20 in vac but will not boost have cheak wastgate but unsure on how it works turbo seems fine but making not pressure why???
Posted: Thu Jul 27, 2006 1:35 pm
by Bugle
Might have to pull the inlet pipe off the turbo and check it can actually spin freely.
Posted: Thu Jul 27, 2006 4:23 pm
by cyberjo
thanks have check exhust side it spins freely no play in shaft check all hoses and have found a hose runing from outlet pipe that runs down to intercooler this small rubber hose runs to a canaster under left guard what is that for ?
Posted: Thu Jul 27, 2006 9:51 pm
by Rodeobob
Thats probably the charcoal canister. Its fuel tank vapour retun into the motor. Well maybe, could be something else.
Bob.
Posted: Fri Jul 28, 2006 1:15 am
by Bugle
Is the wastegate actuator arm attached to the wastegate flap?
Nah Bob I think he means the canister underneath the airbox under the inner guard. Says "Tank asm cruise" on it so i suppose it has something to do with cruise control, maybe a vacuum reserviour since the actuator is vacuum operated
Posted: Fri Jul 28, 2006 7:52 pm
by Rodeobob
Bugle wrote:Is the wastegate actuator arm attached to the wastegate flap?
Nah Bob I think he means the canister underneath the airbox under the inner guard. Says "Tank asm cruise" on it so i suppose it has something to do with cruise control, maybe a vacuum reserviour since the actuator is vacuum operated
Id say your right. You spend more time under the hood of a Piazza than i do.
Come to think of it ive got no idea where the charcoal canister is on a Piazza. On my Rodeo its next to the air pump, where the turbo is on a Piazza.
Bob.
Posted: Sat Jul 29, 2006 9:55 am
by GeminiCoupe
On the Piazza its mounted to the pass side shock tower - unmissable, especially with that springy clamp bullshit on the body meaning you can yank the thing around abit.
Nick-
Posted: Sun Jul 30, 2006 9:14 pm
by wedgenut
If turbo spind\s freely on the turbine side better make sure you still have a compressor wheel attached at the other end, wouldn't be the first broken shaft i've seen. failing that check you still have a wastegate flap left coz if that breaks off you won't boost much.
Posted: Sun Jul 30, 2006 11:58 pm
by Rodeobob
wedgenut wrote:If turbo spind\s freely on the turbine side better make sure you still have a compressor wheel attached at the other end, wouldn't be the first broken shaft i've seen. failing that check you still have a wastegate flap left coz if that breaks off you won't boost much.
The bad rattle in the exhaust is usually a good give away that the shaft is broken.
Bob.
Posted: Mon Jul 31, 2006 8:21 am
by GeminiCoupe
That or bits of the exhaust wheel from the turbo are kicking back in the dump pipe/cat/exhaust.
Nick-