2004 F 350 issue with turbo

[rum4]

When I am towing the cool intake hose blows off at the connection to the turbo, not sure why. Anyone have any ideas?

[quick26]

not tight enough. what is your boost pressure?

[howell_jd]

The boot comes off from oil that is recirculated from the crankcase as well as from a loose clamp. The torque specification of the boot is like 75in-lbs if I recall correctly (that's like 6.25ft-lbs ... NOT REALLY TIGHT) so it becomes clear how a little oil can blow them off. A tighter clamp will increase odd of a ruptured boot. The CCV reroute from NCHornet on Stealth Automotive Inc will filter the oil from the crankcase out of the turbo.

CCV Mod

The PCV (positive crankcase ventilation) is an emissions system so venting to atmosphere is a violation of federal law if you are in a smog check state (not so in SC I believe but you could find yourself in violation on a trip for example).

So for an investment you can solve the problem or you can crank the clamp down tight and carry a spare boot (or several because there are other boots that will blow off) for the eventual rupture...I imagine duct tape would hold for a while but the oil will make a seal "difficult" to achieve.

Good luck!

Jonathan

[rum4]

I have replaced the boot and the clamp. The clamp is on as tight as I can get it. Still blows off. I will try the CCV from NCHornet, thanks

[howell_jd]

Try cleaning with rubbing alcohol or other denatured spirit both the inside of the boot where it connects to the turbo outlet and the outer surface of the turbo outlet where the boot rests. The clamp is not the typical band clamp if you replaced it (meaning the old original one is not being used anymore). I guess a band clamp would work though, I have no idea of the clamping force provided by a band clamp compared to the turbo boot clamps (these clamps are on every CAC boot - lower CAC inlet, lower CAC outlet, intake elbow, and turbo outlet). The idea of using the cleaning agent is to keep the oil from preventing a good seal. What is your boost gauge registering? Older boots are reactive with the oil and break down by stretching and cracking requiring replacement which you indicate you've already done. I think a thorough cleaning coupled with the CCV reroute will help unless you're over-boosting and then you may need another solution. Good luck! Happy Thanksgiving!

Jonathan