Throwing a "hail Mary" question........

[electrycmonk]

I have the Cub Cadet 7260 with the Mitzu 1.3L diesel block
I have read all over the place over the previous 5-6 years that the engine is the same exact block. And as such with all those parts interchangable.....

these all have the 1.3L mitzu block as far as i can tell.

2310	25 hp	2002 - 2006
2516	25 hp	2008 - 2018
2525	25 hp	2008 - 2010
Max 25	25 hp	2012 - 2014
eMax 25S	25 hp	2017 -
1526	26 hp	2016 - 2018
Max 26XL	26 hp	2014 -
1626	26 hp	2018 -
Max 26XLT	26 hp	2018 -
2615	26 hp	2003 - 2008
C27	27 hp	2002 - 2006
2810	28 hp	2002 - 2006
2815	28 hp	2006 - 2008
2816	28 hp	2008 - 2010
3016	28 hp	2011 - 2021
Max 28 XL	28 hp	2012 - 2014

Anyone care to share any data or help out?

I'm looking at troubleshooting a overheated issue that seems to of gotten A LOT Worse....

I will update this later this week. I want to make a short video of the sound it makes when starting and when I can get it to finally start and run....

1st i need to make a you tube user ID so the video can be uploaded.

2nd the symptoms in short. it has had a mild overheating issue that slowly got worse over the years. so now I'm afraid its time to tear into the block and at least replace the headgasket and check stuff. the coolant gets purged from radiator when ever i get it running BUT< there is no coolant in the engine oil. I have not checked to see if there was any contamination in the hydraulic system. Not sure if that is even possible AND I didn't want to a$$ume this was a automatic no-go.

 

[mikester]

Your most likely problem for mild overheating is a dirty and or clogged radiator. If you overheat very quickly your coolant pump may have failed.

Don't use water to clean the outside of your rad because all that fine dust turns to cement.

I use a vacuum to clean my screens and then compressed air to blow my rads from inside out. If it's really bad drain the coolant, pull the rad and clean it thoroughly on the bench. Put in new coolant.

When was the last time you changed your coolant?

 

[doneill127]

Here’s the service and operation/maintenance manual for the Mitsubishi S3L motor. Should help you identify your motor and possibly troubleshoot and repair.

 

[Hay Dude]

Your most likely problem for mild overheating is a dirty and or clogged radiator. If you overheat very quickly your coolant pump may have failed.

Don't use water to clean the outside of your rad because all that fine dust turns to cement.

I use a vacuum to clean my screens and then compressed air to blow my rads from inside out. If it's really bad drain the coolant, pull the rad and clean it thoroughly on the bench. Put in new coolant.

When was the last time you changed your coolant?

I use higher pressure water to flush my radiation’s out all the time. If done properly, the dust doesn’t turn to cement because all the dust is gone.
Been doing that for 40 years, no cement problems.

 

[ROUSTABOUT]

Check the water pump also. Take it off and actually look at it. New thermostat. Clean radiator inside and out. I've cleaned lots of junk out of the inside of radiators and the over heat situation was gone.

 

[electrycmonk]

Your most likely problem for mild overheating is a dirty and or clogged radiator. If you overheat very quickly your coolant pump may have failed.

Don't use water to clean the outside of your rad because all that fine dust turns to cement.

I use a vacuum to clean my screens and then compressed air to blow my rads from inside out. If it's really bad drain the coolant, pull the rad and clean it thoroughly on the bench. Put in new coolant.

When was the last time you changed your coolant?

This evening I’ll gladly give you a highly detailed breakdown of all the coolant troubleshooting/cleaning/experimenting/ laser temperature sampling I have diligently done over the last 4+ years.

 

[electrycmonk]

Here’s the service and operation/maintenance manual for the Mitsubishi S3L motor. Should help you identify your motor and possibly troubleshoot and repair.

Thank you, thank you, thank you… will download and look tonight…

 

[electrycmonk]

Check the water pump also. Take it off and actually look at it. New thermostat. Clean radiator inside and out. I've cleaned lots of junk out of the inside of radiators and the over heat situation was gone.

See previous 2 reply’s…

/well, back to work…

 

[crashz]

Coolant is blowing out of the radiator or expansion tank? Is that what you mean by purged? No coolant in the oil is a good thing. If you are getting combustion pressure into the coolant system (forcing the coolant out) I think you are right, I think you have had a head gasket failure. Whether this is the cause or the initial overheating caused it, I don't know.

 

[doneill127]

Going along with crashz many years ago had a vw diesel that was losing coolant and overheating. Turned out to be a blown head gasket pressurizing the coolant system and blowing it out the coolant tank overflow.

 

[electrycmonk]

Coolant is blowing out of the radiator or expansion tank? Is that what you mean by purged?

yes. Exactly. I just posted a very long reply on this cross-posted question in the cub cadet sub-forum with a lot of data to your questions.

Going along with crashz many years ago had a vw diesel that was losing coolant and overheating. Turned out to be a blown head gasket pressurizing the coolant system and blowing it out the coolant tank overflow.

THIS right here is why I’m think of the cause. Both you guys are talking why I’m thinking it’s the cause.

 

[ROUSTABOUT]

See previous 2 reply’s…

/well, back to work…

I'm talking about inside the radiator where the water goes. You can put some dishwasher detergent in there because it don't foam. Don't use regular soap, because it foams. I've run dw soap in one for a week, it don't hurt a thing. But, if there's any blockage, it will turn loose.

I you think it's leaking. Crank it up in the dark. Cap off, bright light in hand. With the cap off, it will be the path of least resistance. You will see air bubbles coming to cap area, or radiator neck.

 

[electrycmonk]

just updated the other thread..... heres a copy/paste of what i have for y'all:

today is Oct 12th.... been distracted by several other tasks. decided to look at the oil one more time as i did try to just crank it with the water pump, radiator & hoses removed back on the 6th or 7th ... put the battery on charger overnight back on the 5th...

A good friend let me borrow one of his pressure test kits for the radiator but, i have not gotten it to work just yet... getting the hoses plugged to hold a seal just right has not been a success yet. need to get a couple pvc caps to plug the hoses better.

it cranks but didn't want to try to fire off. Fine. I stopped there.

So this morning I pulled the oil dipstick... low and behold. it was *NOW* showing "fluid level 2+ times higher than full on it. AND it was looking like "chocolate milk got in the coffee." Back when i was troubleshooting and the coolant system was still installed and said the oil was still black, i did notice that the oil level was just a bit above the full line...

Yup. its at least a head gasket... still don't have time to disassemble the engine yet so... that will have to wait another day or so. Having read up on a few threads here... it has the potential of being an engine replacement - at worst case; a possible cracked head, next least worse; head gasket replacement.... hopefully just this, at this point now.