Hissing noise under boost

[700rmk]

Well after upgrading to the new truck with the HO in it I have noteced a hissing noise when under boost. I have checked all clamps and they are tight, has anybody else had this problem, it is much louder than the ETC ever was. Is it the heater hose clamps or have I got a gasket gone somewhere, it sounds like its mostly on the turbo side of the motor.

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2001. 5 WHITE 2500 QC, LB, 3:54, 4x4, ETH/DEE, EVERY OPTION BUT LEATHER, ICS NERFS, BEGINING TO MILDLY BOMB!
***HELP SAVE SNOWMOBILING JOIN A CLUB***

 

[LDusky]

700, Go back and feel around the hose going to the intercooler and see if the hose has pooched out from under the clamp. I had this problem for a long time until I installed new clamps with a jam nut.

 

[Blair]

I had a clamp that only leaked at 20 PSI and it even looked ok. I found it by pressurizing the system with 20 PSI shop air and then it was very evident.

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2000 2500 long box 6 speed with everything but cab roof lights,Pyro, Boost, K&N, 4" exhaust, BD Brake, OEM nerf bars (best fit), [BOMB'D SRX700] 1 877 511-5599

 

[Alan Reagan]

Something else to check..... the intake manifold bolts. 18 ft/lbs. Mine were not tight. Also, the intake plenum to the grid heater. If those are not snug, they will hiss and eventually blow the gasket out. I remember reading a post last week where a fellow TDR member was missing one of the grid heater gaskets.

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2001 HO 6 spd 2500, 4. 10 LSD, Towing Package, Electric Brakes, SPA EGT/Boost Gauges, Fog Lights, Real Backup Lights, Molded Running Boards