Dog Whistle in the Engine? - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 07-26-2013, 05:58 AM Thread Starter
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Dog Whistle in the Engine?

After my head gasket replacement I am noticing a new noise. When driving down the road, at 50-55 for example, if for some reason I have to roll on the gas, or I go up a little grade, I hear a VERY, VERY high pitched whistle from the right side of the truck. It is so high pitched it sounds like it is almost out of my hearing range.

When it happens I seem to notice that boost is around 4-6 psi usually.

Anyone else ever have this? I'm thinking a bad seal from the manifold to the up-pipe, or a cracked manifold?

2004 F-350 Crew Cab LB Dually
"Longhorn Hauler" edition
New Heads!
ARP Studs
Banks Six-Gun with PowerPDA (For gauges only)
EGR Delete from IPR
Rotella ELC
New Turbo from Garrett
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post #2 of 3 Old 07-26-2013, 06:10 AM
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I agree that it sounds like an exhaust leak.

.

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Bulletproof Diesel www.bulletproofdiesel.com
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post #3 of 3 Old 07-26-2013, 06:17 AM Thread Starter
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My exhaust manifolds were looking pretty nasty and pitted when I reinstalled them. If I get a used set, does it do any harm to go ahead and install the manifold gaskets?

2004 F-350 Crew Cab LB Dually
"Longhorn Hauler" edition
New Heads!
ARP Studs
Banks Six-Gun with PowerPDA (For gauges only)
EGR Delete from IPR
Rotella ELC
New Turbo from Garrett
Gus_hauler is offline  
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