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Old Dec 20, 2006 | 07:18 AM
  #1  
CyberRad's Avatar
CyberRad
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Over boost

Hey Guys,

I had my first over boost on my stock truck. When it overboosted I was leveling off a hill and I blew the intercooler to throttle body coupler off of the TB. Is there anything I should be worried about? Has any one installed a blow-off valve on the intake?

Thanks in advance.
 
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Old Dec 20, 2006 | 07:20 AM
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what psi were you at when this happened?
 
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Old Dec 20, 2006 | 11:18 AM
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Cold side tubes hardly ever blow off. Maybe it just wasn't tight enough...
 
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Old Dec 20, 2006 | 11:19 AM
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From: Florence,SC
what year truck? any tuners? if you keep driving with a sticking turbo, it could go either way, max power or no power.
 
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Old Dec 21, 2006 | 08:03 AM
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The truck is an 04 F-250. No mods. No tuners.

bowtiehatr - How do I check for a sticking turbo? The truck launches off the line so I don't think the turbo is stuck in high boost. And I was able to feel what no power feels like when the tube popped off so I don't think that's the case either.

ford4life - I don't have a boost gauge in the truck so I couldn't tell you what the boost level was at.

CanadaGuy - I think I'm going to have to go with you on that. I never touched the tubes but I can't say if the previous owner had or not.

Thanks for the responses.

Has this happened to anyone else?
 
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Old Dec 21, 2006 | 10:14 AM
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From: Florence,SC
if the turbo is sticking, they like to do it hot and they stick in full boost spot and poof! then there is issues. it may just be a boot issue but dont rule out the turbo because if it keeps sticking, your head gaskets are next.
 
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Old Dec 21, 2006 | 11:34 AM
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Nice. That's just what I want to hear BowTieHatr.

Is there diagnostics I could run to see if the turbo is sticking?
 
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Old Dec 21, 2006 | 02:16 PM
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Like Canadaguy said that normally doesn't blow off so I would think it wasn't seated right. There is a little grove in there and if it isn't seated just right it will pop off. It is loud and then there is no power. Sounds pretty mean though.
 
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Old Dec 21, 2006 | 06:22 PM
  #9  
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From: Henniker
How do you get a turbo to stick in the full boost spot, The turbo needs to be spinning to apply boost to the intake?
 
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Old Dec 21, 2006 | 06:34 PM
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From: Florence,SC
the unison ring and the vanes will stick causing the over boost.
 
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Old Dec 21, 2006 | 06:35 PM
  #11  
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From: Florence,SC
Originally Posted by CyberRad
Nice. That's just what I want to hear BowTieHatr.

Is there diagnostics I could run to see if the turbo is sticking?
to be honest it is difficult for us to even diagnose a sticking turbo. it depends on how bad it is sticking. see what your dealer has to say. they will probably replace/clean the turbo.
 
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Old Dec 21, 2006 | 07:05 PM
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Sounds like the hose was loose. On my 06 I have hit 30psi gettting on to the interstate. Its all stock except for the exhaust.
 
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Old Dec 22, 2006 | 08:16 AM
  #13  
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Don't you need more than just boost to pop head gaskets? Don't you have to have overfuel and overboost to up the pressures?

BE
 
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Old Dec 22, 2006 | 08:22 AM
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Originally Posted by bedwards
Don't you need more than just boost to pop head gaskets? Don't you have to have overfuel and overboost to up the pressures?

BE
Running 30psi boost is enough to cause the headbolts to start to stretch. Once that happens too often, the headgaskets will leak.
 
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Old Dec 22, 2006 | 08:39 AM
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Will this throw a code or a CEL?

be
 
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