My Backhoe needs and engine rebuild

[grsthegreat]

My winter water bill is $35/month. Summer is $125 this last month. Just to grow green grass that i have to trim.

 

[ultrarunner]

I’ve had $450 monthly summer water/sewer when keeping the rear lawn and fruit trees happy…

My TLB is down with a worn out joystick…

It runs well enough but I find sucking exhaust makes me sick…

No smoke but a n95 respirator makes all the difference in the world for me…

Are backhoe short blocks available or is it rebuild what you have?

 

[rScotty]

As a cheap fast test, I would start the engine and then crack open an injector line one at a time and watch for a change in the exhaust smoke color. I have a bad exhaust / seat interface on cylinder four on one of my tractors. it has enough compression to fire that cylinder but results in blue/white smoke out of number 4's exhaust port. If I crack open #4 injectors pipe nut the smoking ceases. If your problem is somehow related to weak compression caused by a valve problem on a single cylinder this will expose it.

Does the exhaust smell like :
1. unburned diesel - burns your eyes
2. sickly sweet- antifreeze
3. burned engine oil

#1 is what poor combustion can cause and will smell of unburned diesel. Also overly tight adjustments on the intake and/or exhaust valves can cause this without any damage and a perfectly good injector and injection event but don't believe it would happen instantly
#2 cracked head/blown head gasket, and it certainly can just leak into the combustion area at first and not immediately change the oil to a milky color.

I would also check the intake tract for oil, Although I don't think the TLB's used the oil bath air filters wondering if there is any way the engine could somehow be getting oil into the intake manifold, that said, I agree that the main problem is diesel diluted engine oil (since you stated the engine oil does have a diesel odor) that is coming from a bad shaft seal on the injector pump or lift pump and dumping it into the front engine cover gear case and therefore engine oil sump pan. An older engine with marginal piston ring seal will let quite a bit more super thin oil by all four cylinders piston rings and with an increased oil level will also add to the oil past piston ring effects. If the exhaust smells like burned engine oil.

ps. I would probably dump the engine oil / filter and replace it with fresh 15W-40 to do some more testing.

White smoke is coolant entering the cylinders. Mine was a leaking head gasket, but could be a cracked block.

The oil level increasing is diesel entering from a leaking injection pump. The oil analysis will tell you for sure.

Does the white smoke smell strongly of diesel fumes? If so, that is not coolant. It could be unburned diesel from too low of engine compression.

I think a compression test followed by a radiator leak-down test will tell you which way to go.

Be sure to use a diesel kit for compression test. The automotive kind will not work.
Throttle off, do all cylinders, cranking times should be roughly equal, and note the cranking RPM.
This will tell you if you need a ring and valve job.

For the leak down test any automotive test is fine. It will test for an internal coolant leak ....usually a head gasket.

luck,
rScotty

 

[EddieWalker]

The smoke choked me, but I really don't remeber if I smelled anything other than oil in it. It wasn't until a few days later when I pulled the dipstick and smelled it that I smelled diesel. I really thought it was hydraulic oil and never thought to smell the oil. My mind wasn't on diesel or coolant, so my tunnel vision stopped me from really thinking of what it smelled like.

There are short blocks and full rebuilds available for this engine. There are also a lot of kits out there to do it from an in frame rebuild to pulling it and doing everything. Before I do that, I'll talk to the machine shop that did my dump truck. It's a gas engine, but I think he said that he does diesel engines too. He might be able to rebuild it cheaper than I can if I bring the entire engine to him.

I'll look on Amazon for a compression tester for diesels. I don't have one and I've never done it before.

 

[TractorTech]

Thank you. Is there a mark somewhere that tells me where zero is? Once it stops raining, I'll have to do some looking.

There is a timing window on the RH side of the bell housing next to the oil pan. Loosen the screw to pivot the cover open to see the flywheel and timing marks.

If you have the earlier DPS injection pump, you don't have time it as the injection pump drive gear is keyed to the pump

 

[dodge man]

I would sure do a lot of diagnostic work before going down the rebuild road. My gut reaction is you don’t need a rebuild. It was a sudden event. I suppose a piston or rings could crack suddenly but my bet is fuel pump or injection pump.

 

[EddieWalker]

There is a timing window on the RH side of the bell housing next to the oil pan. Loosen the screw to pivot the cover open to see the flywheel and timing marks.

If you have the earlier DPS injection pump, you don't have time it as the injection pump drive gear is keyed to the pump

Thank you. I was hoping there was something like that!!!!!