F550 diesel loud sucking whistle

[jonlavonne]

When accelerating under load at 65-70 mph and 2500 rpm I am getting a loud whistle from the engine. Sounds like near the firewall on passenger side up high. Any thoughts? Seems to run fine otherwise.

[TXNSLighting]

turbo?!!!!!

[jonlavonne]

Man I hope not. I thought it only did it when it was hot but was running empty today and it's only in the low 70's and it did it. Very loud noise!

[Gravel Rat]

What year F-550 ?

If its a 6.0 turbo whistle is normal and you may not have heard it before because the turbo has been stuck.

If its a 7.3 maybe the wastegate is not working properly.

[Merlin300]

Check all the clamps on the turbo, and intake hoses for the turbo. More than likely you have a loose hose clamp. Seen it a hundred times.

[Dstosh]

Probably a broken down pipe. It is the 3' piece of exhaust running right off the turbo.

[TXNSLighting]

Probably a broken down pipe. It is the 3' piece of exhaust running right off the turbo.

3' piece??? thats a huge exaust!

[jonlavonne]

It is a 7.3 and the first year they made the 550. I'll check all the hoses. Thanks!

[LawnProLandCare]

When accelerating under load at 65-70 mph and 2500 rpm I am getting a loud whistle from the engine. Sounds like near the firewall on passenger side up high. Any thoughts? Seems to run fine otherwise.

6.0's are known for the whistle. go ceheck some vids on youtube.com

[jonlavonne]

Definitely not turbo whine. It's a much deeper sound.

[BrandonV]

we had one that had a hole melt in one of the waste lines.