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1999 to 2003 7.3L Power Stroke Diesel
7.3L Power Stroke Diesel equipped Super Duty and Excursion.


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  #1  
Old Wed, March 10th, 2010, 11:43 AM
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If it is an exhaust leak? Is there anything I can do besides replacing the up-pipes? Those puppies are expensive.
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2003 F250 Lariat 7.3PSD CC SB FX4

Kwik (6637) Filter, RE 2.5" leveling kit, F350 Rear Blocks, TC Lock, Fumoto, EBPV/Exhaust Brake,6.0 Tranny Cooler, AIH Delete, IssPro EV2 Gauges, PHP Phoenix stock, 25tow, 40tow, 65tow, 80dd, 100perf, In-tank mods, Muffler Delete, WW, FRx,HPx, JW Stage 1 Trans, Swamps HV/HF IDM
-Pulling a 38' Forest River Sierra 5th Wheel
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Old Wed, March 10th, 2010, 01:19 PM
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Actually, the Ford replacements will run you about $100 in parts. The labor is pretty intense (turbo r&r at 1.8 hours plus the time to do the pipes).


Quote:
Originally Posted by Bob
I noticed that around 15psi the turbo seemed to have a pronounced flutter to it rather than just the normal high-pitched whistle, but once it got above 15psi it went away.
That's turbo surge and it's very bad for the turbo. Just sayin'.
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Old Wed, March 10th, 2010, 01:24 PM
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Cody, I was able to get what I thought was turbo surge around 25psi just playing around in the perf tune, but it was more of a *chirp chirp* sound. The sound I was getting at 15psi was more like the sound you would hear if you blew into a table fan. Why would the turbo surge at 15psi? Isn't that really low psi for it to do that?
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2003 F250 Lariat 7.3PSD CC SB FX4

Kwik (6637) Filter, RE 2.5" leveling kit, F350 Rear Blocks, TC Lock, Fumoto, EBPV/Exhaust Brake,6.0 Tranny Cooler, AIH Delete, IssPro EV2 Gauges, PHP Phoenix stock, 25tow, 40tow, 65tow, 80dd, 100perf, In-tank mods, Muffler Delete, WW, FRx,HPx, JW Stage 1 Trans, Swamps HV/HF IDM
-Pulling a 38' Forest River Sierra 5th Wheel
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Old Wed, March 10th, 2010, 01:34 PM
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YouTube - 7.3 powerstroke turbo surge, turbo stall, compressor surge, or normal wastegate blowoff???

This is the closest sound I could find to what I was hearing at 15psi. Go to the 1:00 mark like he says in his description.
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Bob-

2003 F250 Lariat 7.3PSD CC SB FX4

Kwik (6637) Filter, RE 2.5" leveling kit, F350 Rear Blocks, TC Lock, Fumoto, EBPV/Exhaust Brake,6.0 Tranny Cooler, AIH Delete, IssPro EV2 Gauges, PHP Phoenix stock, 25tow, 40tow, 65tow, 80dd, 100perf, In-tank mods, Muffler Delete, WW, FRx,HPx, JW Stage 1 Trans, Swamps HV/HF IDM
-Pulling a 38' Forest River Sierra 5th Wheel
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Old Wed, March 10th, 2010, 01:53 PM
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Wow, now I'm worried! If in fact, that was turbo surge, and I drove the heck out of it not really thinking it was surge, what kind of damage might I have done? How would I check for damage?
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2003 F250 Lariat 7.3PSD CC SB FX4

Kwik (6637) Filter, RE 2.5" leveling kit, F350 Rear Blocks, TC Lock, Fumoto, EBPV/Exhaust Brake,6.0 Tranny Cooler, AIH Delete, IssPro EV2 Gauges, PHP Phoenix stock, 25tow, 40tow, 65tow, 80dd, 100perf, In-tank mods, Muffler Delete, WW, FRx,HPx, JW Stage 1 Trans, Swamps HV/HF IDM
-Pulling a 38' Forest River Sierra 5th Wheel
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Old Wed, March 10th, 2010, 02:39 PM
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Check compressor wheel for "in and out" movement. Also check to make sure it is not scraping on the compressor housing.
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Old Fri, March 12th, 2010, 08:08 AM
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my '00 F550 surges real bad with no tune a stock turbo, 4" turbo back and the wastegate hose un hooked, It will boost to 29 psi and EGT will get to mid 1200s. No surge with the waist gate hose hooked up, It will boost to 17-19 psi, but EGT get to almost 1400.

any sugestions?
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