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#1
09-27-2011, 06:06 AM
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Kibbles and bits
Well here is a very bad ending for d24T that I thought I was going to install in my 240. I bought a rebuilt D24T complete with around 40,000 miles on it. I got it home, primed the injection pump with fresh fuel, and changed the oil. On Sunday I put it on the running stand, rolled it over till it had oil pressure. I preheated the glow plugs and fired it up, Started great. A few seconds went and the engine revved up to the sky and before I could shut it off, BANG!!! Smoke all over. Engine stopped faster then it started. So I was done for that day, thinking well I need a piston and a new head now, I wish! Pulled it apart last night, I pulled the valve cover off, #1 and #2 exhaust valves gone, valve stem From #2 popping back up in a new location. Pulled the head off, and holy crap, there was no piston in #1 cylinder, well there wasn't much of a #1 cylinder also. Connecting rod looks like a egg noodle. I pulled some piston pieces out of the engine block and some cylinder wall. I will try to post some pictures this week. And by the way, Timing belt(s) was intact in great shape and still on time when pulled apart!
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#2
09-27-2011, 06:26 AM
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Guy at the local diesel shop had a 740 D24 in when I was down there - apparently it had sat for years. When they started it up, it revved up fine, but would not fall - apparently there was something in the pump that had siezed so would not reduce the fuel supply on letting the accelerator off. Luckily it only hung around 3,500rpm.
Did you take your pump apart in any way? I've heard if the governer doesn't go back together correctly it can do the same when there is no load on the engine. Would be interested to see the pics - don't imagine they are too pretty though!
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#3
09-27-2011, 07:23 AM
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I Didn't do anything to the pump, It was rebuilt along with the engine. This is not the first time a VE pump has done this to me. I bought two Cummins 6AT engines that sat in storage for years and both the engines did the same, but they held together. I believe when the VE pump have been sitting for to long the governor will get stuck in the start position and not let the engine idle down. I was hoping letting the pump sit for a week with some fresh diesel in it I would not come across this problem again. After a few days the VE pumps on the Cummins broke lose and operated just fine.
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