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you said in your first post that it sounds like belts slipping and they are as tight as you would want them.

are they too tight. maybe bearings on water pump, alternator or power steering.

Yeah, sound is not coming from front of motor, more turbo/manifold area, have checked it with a pipe to the ear to try and isolate where the noise is coming from.

Luke

Vacuum leak from the cooler - check intercooler hoses/pipes?

Small hole in the air box? (yes people drill little holes to make the induction noise) - easy way to test would be remove the lid. I assume that would leave the filter.

Something to do with the cams in lift mode? (if this is a neo and if neos have variable cam timing lift stuff??) - not sure about this one.

Muffler somewhere along the zorst got a small hole - stick your head on the ground and get someone to rev.

Also - it might be something simple like the exhaust manifold gasket or something - too_much_boost suggested to me once to use a hose. I think it's a common technique so stick one side where you suspect the leak is and the other near your ear... Don't do it too close to your ear or you'll blow it off.

Hope that helps and that it's nothing major.. pretty simple suggestions but those are the ones I'd be checking in the first instance.

good luck.

Dropped in to Dalton Automotive as suggested by ICER33, just got the car rego'd and they are around the corner from Vic Roads.

They thought most likely a gasket in the system somewhere, loose bolts on the dump pipe or something in that area, didn't seem to think it would be turbo damage as it is still boosting ok.

They didn't want to have a listen as no real point with no load on the turbo, would have stuck it on their dyno to have a look but 2WD only and probably too much fuss to drop the front shaft out at this stage.

The guys at Dalton were very helpful and seem pretty switched on.

Will keep investigating.

Cheers

Luke

  • 2 weeks later...

Ha har!

Just ordered turbo Gaskets from Nissan in Geelong and heard in the background "I'm sick of these bloddy Nissan imports!" now that's customer service and do you think I will ever buy a car from them? Or let them work on mine??? and a Nissan Stagea is "a Nissan What!!!" Good to see they know there business, well done boys!

They are organising the parts for me, so just having a winge I guess...

Problem solved!

Got the gaskets and started work pulling everything out to get at the turbo (heat shields are a pain!) and discovered "finger loose" nut on the exhaust manifold to turbo, tightened that and the other 3 nuts, checked the manifold nuts and a couple of them could be tightened a little so I nipped them up too.

Note: Stainless steal nuts are good because they don't seize up, but bad because they do come loose...

Put it all back together and tested, no more ugly sound, was obviously leaking from the turbo exhaust inlet... Now I am enjoying the car for the first time! Very nice.

I also have a spare set of turbo gaskets now, which can't be a bad thing.

Thanks to all for their input and ideas, it all helps.

Cheers

Luke

Edited by munchdesign

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