Turbo Issue-Quick question - Ford Powerstroke Diesel Forum
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Old 07-30-2013, 07:07 AM
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Turbo Issue-Quick question

Ok guys....need some help

Approx 5,000 mi ago I pulled my turbo cleaned it and placed anti seize on the vanes. I did this because they were sticking and the turbo was not functioning. It seemed to fix the issue. This morning something weird happened. The truck made a sound like a burp then lost power. It automatically developed a rough idle. Could this be the same problem? These were not the symptoms the first time.

The turbo does make boost, but sounds funny. Almost sounds like there is a blockage in the exhaust. I also noticed that the boost gauge shows just a tad bit higher on the gauge. Typically under power it sits right at 20, but after the burp, just a little higher.

Any ideas?........
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Old 07-31-2013, 09:30 AM
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Id peek into compressor housing to see if theres any blade damage, and check all cac boots and the intercooler for leaks. If youre exhaust was plugged, it would be your cat, and youd know it was plugged, it would die within minutes. Also while idling, unplug the wire to the vgt actuator and your exhaust should sound different. If you unplug it and it sounds different then your turbo isnt seized.
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Old 07-31-2013, 02:58 PM
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I unplugged it and yes it made a different sound. So I think im good on the turbo itself. Im guessing its something simple like a cracked tube or the like. I did a quick look see and it wasn't anything real obvious. The way its acting is that there is a void in the system. Like its spinning up but not producing due to a air leak. I'll continue to look around and let you know.
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Old 07-31-2013, 02:59 PM
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Thanks....I'll hit ya back with the results of my more in depth review.
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Old 07-31-2013, 03:36 PM
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I didn't notice any issues with CAT tube, MAP sensor hose or any boot. Not sure whats up?
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Old 07-31-2013, 08:23 PM
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There could be a tiny crack that opens up under pressure, I had two boots that looked fine but if you rolled them in your fingers right there were cracks on the inside. Also the cac clamps are 9 lb-ft. I had issues when I didnt use a torque wrench but tried to keep from overtightening, checked it was only 3.5 lb-ft and would hover over the pipe at about 12 lbs boost. Also, unloaded, flat gounded, wot run I will peak at about 22.5 lbs boost, thats with a 2005, keep in mind the 2003-2004.5 turbos made more. Also exhaust leaks at the up pipe are common. These dont come with exhaust manifold gaskets from the factory so look for leaks at the heads. Try unplugging your ebp sensor and driving like that, see if it changes anything.
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