please help
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5th Gear
Joined: Jun 2025
Posts: 5
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please help
Truck: F450, 2013, 99765 miles, Lariat, 6.7
Symptom: squalling sound from back of 6.7 motor. Using a hose for an ear pace, the sound is coming from behind turbo and upper intake man a fold.
What I have done thus far is:
1. changed fuel filters
2. water pumps replaced
3. vacuum pump replaced
4. fan drive pully replaced
5. belt replaced
6. fan drive pully replaced
7. replaced both radiators
8. aftermarket oil and trans cooler
Things I have checked:
1. no suet (smoke residue) on fire wall or back of motor.
2. radiator fluid on side of block (passenger side) very minimal
3. on a long trip tuck will use a qt of radiator fluid.
4. no codes
Things I don't think it is:
No banshee scream, so exhaust studs and manifolds should be good.
No grinding or chattering from trubo.
More useful info:
The squalling does not happen at startup only after 1st rev, or letting idling for a few mins.
Inter guess are:
turbo up pipe gaskets, something with EGR, broken manifold studs,
Please with what it or what to check.
thank you in advance.
Symptom: squalling sound from back of 6.7 motor. Using a hose for an ear pace, the sound is coming from behind turbo and upper intake man a fold.
What I have done thus far is:
1. changed fuel filters
2. water pumps replaced
3. vacuum pump replaced
4. fan drive pully replaced
5. belt replaced
6. fan drive pully replaced
7. replaced both radiators
8. aftermarket oil and trans cooler
Things I have checked:
1. no suet (smoke residue) on fire wall or back of motor.
2. radiator fluid on side of block (passenger side) very minimal
3. on a long trip tuck will use a qt of radiator fluid.
4. no codes
Things I don't think it is:
No banshee scream, so exhaust studs and manifolds should be good.
No grinding or chattering from trubo.
More useful info:
The squalling does not happen at startup only after 1st rev, or letting idling for a few mins.
Inter guess are:
turbo up pipe gaskets, something with EGR, broken manifold studs,
Please with what it or what to check.
thank you in advance.
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