Domush
Platinum Member
It would have to be a LOT of cranking to be a noticeable glob of soot.
Low hour diesel engine failure.
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KennedyDiesel
Veteran Member
I would suggest moving up to a 15w40 oil if you have any sort of decent summer temps.
As for the cracked head passing exhaust to intake that would need to be quite a gaping hole. A small crack would not allow a ton of exhaust to travel unless there was a major pressure differential and even the it would be just a crude form of EGR. These engines burn pretty darn clean to begin with.
It does sound like it was run hot and hard by the way the rings were baked and/or a lube related failure. Heat can be a cause of severe pitting and bearings can look fine even though the top end is getting baked.
As for the cracked head passing exhaust to intake that would need to be quite a gaping hole. A small crack would not allow a ton of exhaust to travel unless there was a major pressure differential and even the it would be just a crude form of EGR. These engines burn pretty darn clean to begin with.
It does sound like it was run hot and hard by the way the rings were baked and/or a lube related failure. Heat can be a cause of severe pitting and bearings can look fine even though the top end is getting baked.
Shop time: 2 months 1 week 6 days.
Called them, to find out what was up with the head. He said that head was "Slightly warped", and three of the valves were leaking (Good job lapping the valves huh). So they machined the head, and valves.
Funny didn't know gas/contaminated fuel can warp a head.
So, I never had the unit over heat, ever. The cylinder walls were pristine, with no signs of thermal damage. I am wondering if I got a bad motor out of the box.
Called them, to find out what was up with the head. He said that head was "Slightly warped", and three of the valves were leaking (Good job lapping the valves huh). So they machined the head, and valves.
Funny didn't know gas/contaminated fuel can warp a head.
So, I never had the unit over heat, ever. The cylinder walls were pristine, with no signs of thermal damage. I am wondering if I got a bad motor out of the box.
rasimmo
Gold Member
Sounds like that head may have slipped through the QC checks at the engine plant. That sort of thing happens from time to time. That is what the waranty is for. They should cover it without any issues.
dodge man
Super Star Member
Were all the rings stuck, or just one hole? Could be the warped head, or bad head gasket was allowing small amounts of water in to that cylinder and caused all the problems. Maybe a stuck injector over fueling that one cylinder would also cause a problem, but you would think you'd be making oil. Did the oil ever check over full?
It seems like all the other ideas, such as the wrong oil, would only be a factor if this thing had 3000 hours on it, not 300.
It seems like all the other ideas, such as the wrong oil, would only be a factor if this thing had 3000 hours on it, not 300.
KennedyDiesel
Veteran Member
Gasoline contaminated diesel as well as diesel contaminated gas can play all kinds of havoc depending on the blend. A lot of the wrong fuel and the engine will simply not combust it. A little of the wrong fuel and things go unnoticed, but a fair bit of gas can greatly affect the burn rate be it peanut butter in chocolate or chocolate in peanut butter.
If it was anti freeze in the oil it would eat the bearings aggressively. It would also show in an oil analysis.
KennedyDiesel said:
If it was fuel contamination in the amount that would not effect how the motor runs, it would have to be a huge volume. The first thing that would go in this case would be the injector pump, or the injectors.
There may have been just enough coolant leaking to crap things up.
Stop by the dealer yesterday, and the tractor is running!
The Tech. was there, and I got to talk to him for awhile. He said the head was pretty warped, and they had to machine it. They also had to grind some of the valves, because they were still leaking.
So, the only thing that I know will warp a head is heat. The idot light has never come on, and it has never acted hot i.e. no steam, water blowing out ect. If the head was so warped why wasn't there coolent leaking in or out of the motor? Never had to add coolent, and it looked nice and green.:mur::anyone:
The Tech. was there, and I got to talk to him for awhile. He said the head was pretty warped, and they had to machine it. They also had to grind some of the valves, because they were still leaking.
So, the only thing that I know will warp a head is heat. The idot light has never come on, and it has never acted hot i.e. no steam, water blowing out ect. If the head was so warped why wasn't there coolent leaking in or out of the motor? Never had to add coolent, and it looked nice and green.:mur::anyone: