B2410

[Troubleguy]

Hello,
I have a b2410 and now it’s overheating smoking a lot out of the blow by hose so I let it cool down checked everything topped up the antifreeze cleaned and blow out rad, worked it for about 15 minutes then it was getting hot and noticed there was no pressure in the top rad hose and antifreeze was low again and hissing
any help would be appreciated
Thank you

 

[RCW]

When it's cold/cooled down, take the radiator cap off and start it at idle.

If you see a bunch of bubbles or it blows coolant out of the radiator fill, it's an indication you have a problem with the head or head gasket.

 

[Troubleguy]

When it's cold/cooled down, take the radiator cap off and start it at idle.

If you see a bunch of bubbles or it blows coolant out of the radiator fill, it's an indication you have a problem with the head or head gasket.

Ok thanks I will check that when I get home

 

[Russell King]

If it has a thermostat you may want to check or replace it.

Clean exterior of the radiator and the screen in front of the radiator.

But assume you have a cracked head, check the oil to see if it has water in it.

Check radiator fluid to see if it is oily

 

[RCW]

But assume you have a cracked head, check the oil to see if it has water in it.

Check radiator fluid to see if it is oily

Russell - doubt he'd have coolant in the oil, but good bet there's oil or darkness from exhaust in the coolant if the head is the issue.

If at the head, it's so hot up near the pistons that coolant would evaporate off and you'd get the sweet smell in the exhaust. Wouldn't make it to the engine oil circuit.

I'm thinking this thread a while back. Could be what the OP is looking at.

BX2200 Misfire and Dark Coolant | OrangeTractorTalks - Everything Kubota

 

[Dave_eng]

Russell - doubt he'd have coolant in the oil, but good bet there's oil or darkness from exhaust in the coolant if the head is the issue.

If at the head, it's so hot up near the pistons that coolant would evaporate off and you'd get the sweet smell in the exhaust. Wouldn't make it to the engine oil circuit.

I'm thinking this thread a while back. Could be what the OP is looking at.

BX2200 Misfire and Dark Coolant | OrangeTractorTalks - Everything Kubota

My experience is from a V-6 car engine so there may be reasons it is not Kubota relevant.

My first clue of a head/gasket problem was doing an oil change and the first fluid out of the drain plug was a few ounces of green anti freeze as it was heavier than engine oil..

My thinking was:

engine oil is pumped up to cylinder head for the valves etc and this same oil has an easy gravity path to drain back to the crankcase.

If the a coolant passage in the head failed beside the gravity oil drain passage, coolant could end up in the crankcase without coming in contact with a piston or cylinder.

Dave

 

[RCW]

My experience is from a V-6 car engine so there may be reasons it is not Kubota relevant.

My first clue of a head/gasket problem was doing an oil change and the first fluid out of the drain plug was a few ounces of green anti freeze as it was heavier than engine oil..

My thinking was:

engine oil is pumped up to cylinder head for the valves etc and this same oil has an easy gravity path to drain back to the crankcase.

If the a coolant passage in the head failed beside the gravity oil drain passage, coolant could end up in the crankcase without coming in contact with a piston or cylinder.

Dave

Dave - - very true. I did not mean to dispel Russell's suggestion at all, and it's certainly possible.

However with the 3-cylinder engines, it seems it isn't as much an issue. The oil pressures of the engines would seem to favor pushing motor oil into the cooling system, versus other direction.

Would be a different equation altogether if there were a block problem, but that's very unusual.

I admit my experience is limited to OTT, and not personal trouble-shooting for coolant in the oil. I have seen oil in the coolant with a friend's BX Kubota, very much like the thread I linked earlier.

They indeed did have a problem with their head, and had to have it replaced.

 

[schmellba99]

When my B2410 was doing the same thing, though not nearly as fast, it was because of a cracked head. Pulled the head, bought a new one and replaced most of the upper part of the engine while I was into it (head, head gasket, injectors, injector rails, valve cover gasket and valve cover for me since I had a crack in mine from overtightening it previously). Runs like it should now, doesn't overheat and gets done what I need it to get done.