Help no Boost

cyberjo · Post by **cyberjo** » Thu Jul 27, 2006 5:50 am

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???

Bugle · Post by **Bugle** » Thu Jul 27, 2006 1:35 pm

Might have to pull the inlet pipe off the turbo and check it can actually spin freely.

cyberjo · Post by **cyberjo** » Thu Jul 27, 2006 4:23 pm

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 ?

Rodeobob · Post by **Rodeobob** » Thu Jul 27, 2006 9:51 pm

Thats probably the charcoal canister. Its fuel tank vapour retun into the motor. Well maybe, could be something else.

Bob.

Bugle · Post by **Bugle** » Fri Jul 28, 2006 1:15 am

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

Rodeobob · Post by **Rodeobob** » Fri Jul 28, 2006 7:52 pm

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.

GeminiCoupe · Post by **GeminiCoupe** » Sat Jul 29, 2006 9:55 am

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-

Post by **wedgenut** » Sun Jul 30, 2006 9:14 pm

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.

Rodeobob · Post by **Rodeobob** » Sun Jul 30, 2006 11:58 pm

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.

GeminiCoupe · Post by **GeminiCoupe** » Mon Jul 31, 2006 8:21 am

That or bits of the exhaust wheel from the turbo are kicking back in the dump pipe/cat/exhaust.

Nick-