1920 w/ blowby on #1 cyl

[Hooked_on_HP]

If the injector was not operating properly and over fueling the cly it would run hotter than the others, but with this type of injection system I am not sure if this can happen. The other senerio is that #1 was doing all the work and over heated. Does the temp guage work. Is the water pump pumping?
Bill

 

[Caliche]

If coolant was making it's way into the cylinder (crack , gasket) and washing the oil off the cylinder walls (coolant makes a bad lubricant) but the rings did their job and kept the coolant out of the crankcase, I would think the piston would get hot.
Tuesday night full belly thoughts.

 

[Soundguy]

yep.. could have.. and then.. I guess once it burned the piston and compression went bye bye thent hat cyl oiled up right before it got shut down.

I did not inspect the water pump or the gauge cluster.

soundguy

 

[Caliche]

Wow, it's late back there. You"re burning the midnight oil.
I would also check the valves real well, if you get the chance.

 

[IH3444]

Undetectable by human eye head gasket leak. Small amount of coolant burned in cylinder during power stroke cycle. Washed oil film off piston/cylinder at place of leakage. Aluminum piston had heat concentraction at leakage spot. Aluminum piston began to shed particle bits onto parent bore cast iron block cylinder. Hence blow by in that cylinder, pressurizing crankcase.

Second senario, cylinder head has slight crack, allowing cooling water to enter combustion cylinder. Crack closes when engine cools down, and only opens and leaks when engine is warmed up. Almost undetectable also. Have head closely inspected, pressure checked, and also manufluxed for a crack. Even if it passes testing, it still maybe cracked. Have seen this before.

Cylinder heads like to crack between valve seat rings. Look very closely at this area.

 

[Soundguy]

ok.

valves and head 'looked good' you know how that goes.

I like #1 possibility.. very plausable. we did manage to squeeze out of the op that over the last few days it slowly used 1g of coolant ( though none made it into the oil).. so it must have gone into a combustion chamber.. if it had a steady low steam bath it could have kept that cyl washed and allowed it to wear..

And I'd go with not being able to see a small leak on the head gasket.. especially one small enough to drop 1g over a few days of work.

will keep you guys posted.

soundguy

 

[Egon]

Can of dye penetrate!

 

[JC-jetro]

ok.

valves and head 'looked good' you know how that goes.

I like #1 possibility.. very plausable. we did manage to squeeze out of the op that over the last few days it slowly used 1g of coolant ( though none made it into the oil).. so it must have gone into a combustion chamber.. if it had a steady low steam bath it could have kept that cyl washed and allowed it to wear..

And I'd go with not being able to see a small leak on the head gasket.. especially one small enough to drop 1g over a few days of work.

will keep you guys posted.

soundguy

I Like it. I go thru the same thing with our maintenance folks when we have equipment failure. They don't like to fess up, kind of need to interrogate them individually and start building a case backward to find the root cause.
It is amazing that it did not mix with oil. It should have been small amount of antifreeze that was continuously burning leading to the problem.

have you asked him if he ever saw white smoke coming out of the tail pipe, probably he takes the fifth on that

 

[barbqranch]

I have no problem smelling antifreeze when a water pump is leaking. I was wondering, if it is being burned in the cylinder, does it have a distinctive odor?

 

[Soundguy]

Yep.. I did specifically ask about steam or white smoke from the stack or breather. was told 'none' except right when it went to missing.. then it puffed a lil bit white from the breather.. which then it was immediatly shut down.. IE.. within 'seconds' of the constant miss.

I guess if the compression on that cyl was staying up and coolant was making it into that cyl, then it was getting burned and not allowed to mix. at whatever point that piston and ring set gave up the ghost and allowd the compression loss and missing, then the coolant would puff thru the breather, and diesel would set on the piston.. since it was shut down asap.. I can see why the piston and cyl was wet with diesel, and no coolant got to the oil.. ie.. it was all burned while compression seal was good, and only had seconds to interact once seal failed.. heck.. at that point steam could have escaped thru an intake or exhaust valve if open, vs condensing in the cyl and getting to the oil.

soundign very plausible.. will keep on it to see if any more details come out.

soundguy

I Like it. I go thru the same thing with our maintenance folks when we have equipment failure. They don't like to fess up, kind of need to interrogate them individually and start building a case backward to find the root cause.
It is amazing that it did not mix with oil. It should have been small amount of antifreeze that was continuously burning leading to the problem.

have you asked him if he ever saw white smoke coming out of the tail pipe, probably he takes the fifth on that