Kubota D902 oil spraying from cylinder #2

[dasmesser]

Have been searching for anything with this exact problem, cant find it: Bought a used rtv900 with known overheat, took off head, looks pristine, flat with straight edge both ways, cleaned it up changed head gasket. Runs drives, oil coming out of exhaust, retorqued head bolts, same. Removed glow plugs to do compression test. getting a huge spray of oil out of #2 cylinder, fuel shut off is tied in off position. Compression is 490-500 on all three cylinders. Removed rocker arms from the valves on #2, same thing, oil spray from glow plug hole. Bore scoped it, #1 and #3 are perfect, # 2 oil: kinda new to the small diesels, is this a cracked head? Head gasket blown again? bend rod? Would appreciate any information.

Edit to add: went back out this morning and it appears to be more water/oil combo, and when put compressed air down glow plug hole, can hear it gurgle all over the place, thats sounding like a head gasket/ cracked head problem. Thanks

 

[007kubotaguy]

Overheating with the early RTV 900 was a common problem. Radiator location was poor. My experience has been when they get hot enough to crack the head that they also ruin the piston rings. The piston rings lose their hardness.

 

[North Idaho Wolfman]

Pull the head again as it sounds like you have a cracked head.

 

[GeoHorn]

A failed head gasket can do this also…allowing oil and water to mix and enter a cylinder. I know you just changed it…but be certain to use a factory/kubota gasket when you check that head again.

 

[dasmesser]

Thanks all, Not taking another chance on that head, new one be here next week. See how it goes from there. Thanks again