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Lost All Boost Turbo Not Spooling

blue stag

By blue stag,
in Engines & Forced Induction

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blue stag Newbie

blue stag

Posted
Posted

Hey guys new to the forum and to forced induction cars.

Heres the problem as of yesterday i am back to driving na as turbo not spooling. No noise is coming from turbo at all.

Before you say take it to a mechanic, No

I work 6am-6pm 7days a week. Lol plus i would like to learn

Anyways could it be a vaccum hose, leak in intercooler or turbo inlet hose ?

Any ideas ? What do i look for?

I have no ideas where the vaccum hoses go from/to

Where are the 2 pipes supposed to go that come from the boost solenoid

Thanks for listening to my long winded speel.

Some help would be great

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https://www.sau.com.au/forums/topic/462474-lost-all-boost-turbo-not-spooling/
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R31 drift pig Experienced

R31 drift pig

Posted
Posted

A popped vacuum hose won't loose all boost

A popped cooler pipe will.

A popped cooler pipe it won't drive at all.... Sounds like it's still running and driving, just nothing from the turbo?

Is it a stock turbo? What boost?

jiffo Mentor

jiffo

Posted
Posted

My money is on an exited turbine wheel too.

They'll run without boost pipework but the mixtures are way wrong, will be very rich.

AFM is sending flow info to the ecu which is way out of whack with what the engine's actually eating.

The more boot you give it the worse it becomes.

Time for a call to Stao.

Sinista32 Grand Master

Sinista32

Posted
Posted

R32 GTR runs without the IC pipe like an NA (Maf less). Quite fine

R34 GTT runs like an NA (slightly worse) with the Turbo rooted. No boosting..

R32 GTSt runs like shit with IC pipe popped off.

likely a high flow is your best option

niZmO_Man Grand Master

niZmO_Man

Posted
Posted

When my 32R popped an intercooler hose, the car ran but ran really shit. Still sort of driveable.

When my GTS-t dropped a turbine wheel (turbo exhaust wheel), the engine ran fine but no boost, so was slow and running super rich.

iruvyouskyrine Grand Master

iruvyouskyrine

Posted
Posted

Indeed.

And as above, popped cooler hose = car wont drive.

So if it's driving, logical to deduce that turbo has failed

Not true at all. Every car is different and depends on each situation, when they pop the silicone may force everything back into close to the position it should be, other times or won't. My car still drove fine on light load with popped cooler pipe. Enough to get me the few km home no worries.

  • 3 years later...
H@ME Mentor

H@ME

Posted
Posted

Hey guys,

 

stagea - s2 rb25det

 

just done head gasket and timing kit etc

car has high flow turbo, fmic, bleed valve and exhaust and nistuned

Car back up and running fine but NO BOOST at all - as in it drives n/a fine boost gauge comes up to the 0 but not even 1psi of boost...

ideas?

 

H@ME Mentor

H@ME

Posted
Posted

Pulled the circlip off this morning and the flap opens and closes no issues.

With the circlip back on I am able to move the full arm and flap with pliers -

 

took intake pipe off and turbo spins freely by hand - 

GTSBoy Grand Master

GTSBoy

Posted
Posted
10 hours ago, H@ME said:

Pulled the circlip off this morning and the flap opens and closes no issues.

With the circlip back on I am able to move the full arm and flap with pliers -

Is that with the heatshield on or off? I've seen the stock heatshield lay up against the actuator rod and stop it moving fore-aft.

H@ME Mentor

H@ME

Posted
Posted

Has not made boost since start up - I put the turbo on all fine drove off no boost - no bang! 

 

Ive had a rear wheel blow off one of my skylines I know the sound and fedl

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