6.0 woes

[powerstrokemonster]

2004 f-250 90,000 miles

i need help everything has been running great on my truck until yesterday. i got in it started it up and inside the cab if sounding like a helicopter. when i give it gas it goes away and sometimes it just goes away on its own but i have no clue what it could even be of course i cant hear anything under the hood because the engine is to loud to hear anything but it is like a bad helicopter sound i dont know how else to explain it

thanks

[smuesse]

Maybe its the down pipe hitting the firewall? Mine did that a couple times and it makes a loud vibrating sound in the cab.

[powerstrokemonster]

i just checked that is not it but makes since thanks

[smuesse]

Does it sound anything like an exhaust leak? Maybe it could be something with the up pipe flex joints. Dont you hate trying to discribe and diagnose sounds.

[powerstrokemonster]

yeah i hate it because i cant think of the right sound haha but honestly does it sound like an engine problem or something simple