Super Duty failure in one hole - Ford Powerstroke Diesel Forum
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post #1 of 34 Old 01-20-2014, 03:36 PM Thread Starter
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Super Duty failure in one hole

As the title says Super Duty with dead holes particularly cyl 8. What's going on? I just bought a 01 that has a bad engine with no compression on one cylinder, haven't figured out which one, but my friend just replaced a engine because number 8 egged it self. It seems to be kind of popular for these newer 7.3 to do this. His had about 170k. The one I picked up has about 260k. I am going to bet that number 8 is also shot in this engine. What's going on that these trucks are failing more? Both of these trucks are clean trucks. Is the LL injector to blame?


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post #2 of 34 Old 01-20-2014, 06:13 PM
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Its what happens when someone runs the truck with a bad injector. Diesel is oil based which naturally is a lubricant so when you drive say 200 miles on a bad injector it "washes the cylinder out". Ive replaced an engine that done the same thing and it was because of that.


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post #3 of 34 Old 01-20-2014, 06:15 PM
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Number 1 or 8 is generally due to dusting

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post #4 of 34 Old 01-20-2014, 06:16 PM Thread Starter
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Nah. That's not how it works. The fuel is atomized. The cylinder is oiled from the bottom up.


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post #5 of 34 Old 01-20-2014, 06:20 PM Thread Starter
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Number 1 or 8 is generally due to dusting
Wonder why that is? Not the whole engine? This thing has blow by that isn't even puff puff. It's woot. This truck has a banks intake that isn't any better looking than a cheap kn that's got a bit of glory wrapped around it.


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1996 F-350 Crew Cab 4x4, Auto, Toyo MT 315/65/16r, full force 160/30% injectors, Super Duty electric fuel system, RiffRaff regulated return, Driven diesel electric fuel pump controller, SWAMPS HVHF IDM, custom tuned TS chip, 1.0 Turbo, CX Intercooler, 4" Exhaust, 6637 Intake, 4.10 Gears, 225k+ miles.
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post #6 of 34 Old 01-20-2014, 06:22 PM
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I remember reading something fairly extensive on it a couple years ago when I first got into 7.3's. It's the way the intake routes, the particles tend to take that path rather than the other cylinders, I can't remember the specifics anymore lol.

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post #7 of 34 Old 01-20-2014, 06:28 PM
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banks intake lets lots of junk through.

there was another member who took off his banks ram air and put 6637 on, because after 3000 miles the banks intake let a lot of particles through.

the #8 cylinder is always affected more when dust and fine particles make it through the intake.

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post #8 of 34 Old 01-20-2014, 06:30 PM Thread Starter
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Quote:
Originally Posted by blue99stroker View Post
banks intake lets lots of junk through.

there was another member who took off his banks ram air and put 6637 on, because after 3000 miles the banks intake let a lot of particles through.

the #8 cylinder is always affected more when dust and fine particles make it through the intake.
Ok, I personally run a 6637. They seam to be really good filter.

1996 F-350 Crew Cab 4x4, Auto, Toyo MT 315/65/16r, full force 160/30% injectors, Super Duty electric fuel system, RiffRaff regulated return, Driven diesel electric fuel pump controller, SWAMPS HVHF IDM, custom tuned TS chip, 1.0 Turbo, CX Intercooler, 4" Exhaust, 6637 Intake, 4.10 Gears, 225k+ miles.
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post #9 of 34 Old 01-20-2014, 06:45 PM
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Ok then ever wonder why a 7.3 with 500k has no ring ridge? (Cylinder wear)


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post #10 of 34 Old 01-20-2014, 06:50 PM
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Ok then ever wonder why a 7.3 with 500k has no ring ridge? (Cylinder wear)


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