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Old 12-06-2010, 07:30 AM
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whistle with boost ..

it starts around 14lbs some times it goes away with a little more boost, some times it doesnt come on till about 20lbs. i assume i have a small leak on the IC pipes or the cooler. any ideas where to look first. or if i can presser test the intake system with it still on the truck...i just saw the other post about a whistle under boosted conditions. mine isnt really loud and it comes and goes with depending on how much boost its making.

Last edited by 1tonpower; 12-06-2010 at 07:36 AM.
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Old 12-10-2010, 09:48 AM
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Bump.. Having the same issues with my 08.
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Old 12-10-2010, 02:53 PM
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im thinking its the IC pipes. i havnt had time to check it out yet =\...power and boost seem are were they should be..im seeing 32lbs max. the leak must be just big enough to make noise...egts are not noticeably higher WOT or cruising.

Last edited by 1tonpower; 12-10-2010 at 02:57 PM.
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Old 12-11-2010, 06:05 AM
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Im thinkin mines got a leak in one of the up pipes. When it sits and idles while warming up i can smell exhaust.
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Old 12-20-2010, 07:26 PM
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If you can smell exhaust in the cab of the truck its likely the donut gasket on one of the up-pipes. The cab will need lifted to replace the gasket.
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Old 12-21-2010, 11:40 AM
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Quote:
Originally Posted by cam31 View Post
If you can smell exhaust in the cab of the truck its likely the donut gasket on one of the up-pipes. The cab will need lifted to replace the gasket.
sigh.....looks like ill just drop it off and have them techs take a look see
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Old 12-21-2010, 11:46 AM
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whistle with boost..

Here is a turbo leak boost test fixture. This should help you hunt for leaks. http://www.dieselsite.com/index.asp?...ROD&ProdID=607
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Old 12-27-2010, 04:48 AM
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Originally Posted by 1tonpower View Post
sigh.....looks like ill just drop it off and have them techs take a look see
Im pretty sure they can replace up-pipes without pulling the cab. Everything i have read says they can pull the transmission out and replace them.
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Old 12-27-2010, 02:28 PM
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how do they go about variating if it is the up pipes or not. if i have a hole in one of the cold pipes or even if it is just a boot i could take care of that my self
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Old 12-27-2010, 02:44 PM
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Im not sure on how the verify which it is. i am thinking about buying that leak tester from dieselsite though.
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