Black Soot - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 4 (permalink) Old 02-19-2007, 01:33 PM Thread Starter
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Black Soot

I was under my hood yesterday and noticed black soot on the firewall behind the engine. It appears to be on both sides of the motor. Any idea of what might be causing this? I checked my downpipe for any leaks, but didn't see anything wrong. Could I have a manifold leak? Please help; trying to get ready for Smokin' in April.

2002 F-250 Crew Cab 4x4, DP-Tuner 60 tow, 80 eco, 120 race, and 140 smoke, Banks wastegate, Banks Transcommand(bypassed), 4" SS exhaust, AFE stage 2 intake, Superlift 6" lift, 37" Nitto Terra Grapplers, 18" Motto wheels, EGT and Boost gauges.
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post #2 of 4 (permalink) Old 02-19-2007, 01:37 PM
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The up pipes that feed the turbo, this is a pretty common leak. They have the old school donuts to try and seal them up. If you were planning on some trans upgrades it would also be a good time to do the up pipes because of the access.

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post #3 of 4 (permalink) Old 02-19-2007, 04:08 PM
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Yup, up pipes...
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post #4 of 4 (permalink) Old 02-19-2007, 05:35 PM
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Yea just like the guys said above, it is your up pipes. I had the same problem with my truck and after tearing everything down when i replaced my Turbo, we decided to go ahead and do the donuts on mine. After we got the Y Pipe off, we noticed that one of the bolt holes was cracked, and after asking around, this is a common problem on the 7.3L. The two that i have seen with cracked bolt holes were both on the passenger side and it was on the back hole on both. You can get the Y Pipe at Ford for $94 or maybe $30 cheaper at International. The one you get from ford has the international number stamped on it, so of course they mark them up. Good luck, and if you take it off, USE a GOOD AMOUNT of PB Blaster on the bolts, they are a B**ch to get off. the bolt heads are 10MM

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