No Compression in #8 Cylinder HELP! - Ford Powerstroke Diesel Forum
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Old 01-01-2014, 09:44 PM
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No Compression in #8 Cylinder HELP!

Hey everyone, Looking for a little assistance, ideas, or first hand experiences with what has happened to my truck last week.

2008 F350 CCLB
HS XRT PRO TUNER set on Stock NO POWER
FULL DPF/CAT delete since 15k miles.
Stock (other than delete pipes) exhaust and intake

Truck started shuttering violently and blowing blue/white smoke while towing 9k up a moderate hill at 70 mph, about 75-80% throttle. No overheating, no check engine, no lights on dash ect. Severe loss of power. Truck has 92k miles on it currently. It was dark when it happened, but I could see fluid all under the bottom of truck, appeared to be coming from rear of engine, but hard to tell with a flash light. Looked like engine oil to me at the time. Towed to Ford dealership, they stated next morning that it was engine coolant under the truck. They ran a manual compression test, discovered #8 has no compression. Immediately said it was due to my "chip" overfueling the engine and it was burnt down....I asked how this was possible on a no HP setting, and why it was specific to only one cylinder having an issue. They didn't have an answer, and said it will be 13k for a new motor installed. I asked if it was an injector failure of some kind, they said they had no idea. I asked to have the #8 injector tested, since I do have extended warranty to 100k. Tech said if it was proven faulty then they could warranty the motor. They have not taken the head of yet to investigate further into damage.

Truck is religiously maintained at the dealer per fords recommended schedule. Very disappointed that I have such a significant engine problem with so few miles. Really love my Ford truck, been a great vehicle...but right now I'm really missing the Duramax engine in my last pile of S&*^ chevy. Thank you in advance for any assistance or information. I really appreciate any and all help!

Thanks again!
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Old 01-02-2014, 06:45 AM
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Sounds like a cracked piston.
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Old 01-02-2014, 07:45 AM
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I stumbled onto some other posts that said a similar diagnosis. Is this a common problem for this engine? Thanks!
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Old 01-02-2014, 07:50 AM
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I wouldnt say its extremely common but its not unheard of either. Was it oil or coolant that spewed out? If it was oil i would say for sure its a piston.
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Old 01-02-2014, 11:25 AM
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I thought it was oil in the dark, didn't smell like coolant to me. But the dealer insists it was in fact coolant.
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Old 01-02-2014, 11:51 AM
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I had the same thing happen on my 6.4 '08. Turned out to be a broken rocker arm.

It suddered to the point that I thought I had a flat tire at first....
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Old 01-02-2014, 11:56 AM
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Hopefully its something simple J-Heff. keep us posted
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Old 01-02-2014, 12:05 PM
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Quote:
Originally Posted by kemp.jerry View Post
I had the same thing happen on my 6.4 '08. Turned out to be a broken rocker arm.

It suddered to the point that I thought I had a flat tire at first....
Thats exactly what it felt like. I wish thats what had actually happened! I will keep you guys posted on what they find, thanks again for the help guys. Really appreciate it.
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Old 01-02-2014, 12:23 PM
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2013 was a tough year for my '08 F-250...
Turbo's in January..... $5,500, Rocker Arms in June....$2000, and fuel rail sensor and harness in Oct. $1300... Oh yea, I forgot... assorted front-end parts.... $1400...

Naturally, all this happened just past the 100,000 mile mark...
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Old 01-02-2014, 02:55 PM
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Quote:
Originally Posted by kemp.jerry View Post
2013 was a tough year for my '08 F-250...
Turbo's in January..... $5,500, Rocker Arms in June....$2000, and fuel rail sensor and harness in Oct. $1300... Oh yea, I forgot... assorted front-end parts.... $1400...

Naturally, all this happened just past the 100,000 mile mark...
Yes mines been rough too. Two Radiators, full front end rebuild (track bars, ect), steering shaft & Gear, and now this issue. Like I said though, it's been a much better overall vehicle than the GM products I came from (aside from engine and tranny). Extended warranty covered most of it...but this will be a fight i'm sure.
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