No boost/low boost - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 08-03-2014, 05:30 PM Thread Starter
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No boost/low boost

As the title says I'm having a low/ no boost. I just redid my heads, truck runs like a dream, except that there is a hissing noise coming from the turbo(I think). When you get on it even easy it gets louder, but it's not a poping noise it's just a loud hissing noise. I'm thinking maybe the up-pipes aren't clamped together good enough? Just wanted to through this on here and see what anyone else thought. Going to try and fix it tomorrow. Thanks in advance.

Kyle


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post #2 of 5 Old 08-04-2014, 09:32 AM Thread Starter
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Refitting the up pipes to the turbo and I still have the hissing noise. If I unplug the vgt it's goes away what is this problem? Something with my turbo? Before I worked on it noting was wrong


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post #3 of 5 Old 08-04-2014, 12:53 PM
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Seems you checked the exhaust side did you check the intake side for problems?
Loose fit, split in intake pipeing, air filter problem?


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post #4 of 5 Old 08-04-2014, 01:56 PM
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Are you sure the flex section on the up pipes didnt go bad. Also the v band clamp for the y pipe to turbo has to be perfectly flat together or it will leak. i use a ratchet strap to the core support behind the right side head light to pul it in place before i put the v band clamp on.
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post #5 of 5 Old 08-04-2014, 03:21 PM
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I'm having the same issue (posted). I did the same thing with unplugging the turbo and it did the same thing. I was reading where the tube of the drivers side exhaust manifold becomes coked up. I unplugged that sensor as well and did the same thing. So next thing I'm gunna clean it out. U might wanna try that as well. Ppl be having the same probs as and had success with it.

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