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Old 03-21-2014, 04:38 PM
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Blown engine

My company has a 2008 F-550 Super Duty bucket truck (Altec 42' boom) that is used by our line crew for placing cable. Thursday we were driving to a job a few hours away doing about 75 on the interstate and the engine started knocking very loudly.

We immediately pulled over and shut the truck down. I was in an F-150 ahead of the crew. Once I was able to get back to them I had them start it up to determine what the issue was. It was immediately clear that something has self destructed in the block. I towed it a mile to the next exit with the F-150 and had a wrecker take it to the dealer from there.

The dealer called later in the day with the bad news. Looking at $20,000 for a new engine and they won't warranty it as they claim the oil was 6 quarts overfull. I personally find this hard to believe as the truck idles 12 hours a day while we're working and it is actually a month overdue for a change. Typically at this point it is usually about 2 quarts low. I'd assume if it was 6 quarts over it would have blown two months ago.

So, my question is... Is this a common issue? From the research I've done, these engines have an issue with fuel leaking into the crank case causing the excess pressure but I'm not sure how we can prove this to the dealership.
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Old 03-21-2014, 04:39 PM
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I should also add that there were no codes and oil pressure was normal.
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Old 03-21-2014, 05:00 PM
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I cant explain all that but if the oil is WAY over full, its probably coolant in the oil making it read over full

I would question the 20 grand as well.........
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Last edited by Ontario Trucker; 03-21-2014 at 05:53 PM.
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Old 03-22-2014, 05:14 AM
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$20 Grand.........? Yeah right. Tell that dealer to suck it.
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Old 03-22-2014, 05:47 AM
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Sounds like a troll perhaps
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Old 03-22-2014, 06:09 AM
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Ya gotta remember too, it is a bucket truck, you cant always pull the cab. Labor is going to be way higher. 30 hours labor is fair, I wouldnt touch it for less than 25 hours. Complete longblock is prolly 15 grand, puts you right there around 18k with fluids/etc. also, you dont egr coolers with the longblock theyre like 600$ a peice. Also, I'm pretty fcking sure that 6 quarts overfull didnt hurt the engine, i've seen em 12+ quarts overfull and not blow up. they didn't wanna do a teardown to find out, so they just said "Overfull". Techs are Flat rate, the less time they spend on something, the more money they make. If you know the motor is bad, just saying "It was overfull so it blew up" is a quick "Diag" then he goes on with his day. These motors are bad about blowing the horizontal egr coolers and hydrolocking the engine while its running, and bending rods,etc.
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Old 03-23-2014, 06:12 AM
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Thanks for the info. I'll have them question the cost of replacement as well as a proper diagnosis. I'd agree that they'll have a hard time pulling the cab as the second stage of the boom covers it when lowered. If they're replacing the engine anyways, they could start it long enough to raise the second stage so that it is out of the way but that causes clearance issues. It's a nightmare finding shops around here that can work on it due to the clearance required.
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Old 03-23-2014, 06:16 AM
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Good luck, I hope its not all that bad
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