up pipe leak?

montana6.4 · Mar 31, 2013

Ok so it sound like a slight whistle right behind the dash where the pipes are at. But I'm not seeing any soot on my firewall or around the pipes or bellows. Is there any other way to check for a leak. Pickup has an h&s mild tunes, cai, 4" dp back. I just recently cleaned my air filter not sure if its that maybe dunno?

Strokethis34 · Apr 2, 2013

More than likely the pass side pipe bellow. Common leak point. Have to pull can or trans to replace. Or may e the gasket on the down pipe to turbo?

StockCar#10 · Apr 5, 2013

Could be the up pipe were it attaches to the turbos ,mines actually leaking there as well

montana6.4 · Apr 5, 2013

Are you seeing any soot come out or just hearing it?

StockCar#10 · Apr 9, 2013

Well i pulled the cover off the turbos an found my leak was at the grafite seal between the hp an lp turbos,the way the heat sheild is tappered to the back it was pushing soot across the up pipe mounting area.
But yes i had a whistle as well

montana6.4 · Apr 10, 2013

Thanks for the help ill keep looking for it.

Alfie · Apr 15, 2013

RH exhaust manifold tends to leak alot and break bolts.

Also do u have the updated heater hose. I seem this hoses make some weird sounds if they don't have the updated one. Just something to look into.

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Phiber Optik · Sep 3, 2013

I have a similar whistle sounds like an exhaust leak to me, did you end up finding the cause?

montana6.4 · Sep 18, 2013

No, think its just normal noise the turbo makes with mine. Cause I couldn't find any leaks on up pipes and no soot on the turbo cover. So who knows I'm just rolling with it may just of been paranoid.