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Have a Cub Cadet LT1050 that was given to me, 299 hrs on a Kohler Command 26 hp CV 730 When I go up hills to the right it start blowing Blue Smoke out of it. other wise it doesn't smoke. Any Ideas off the top of your head?? Did a compression test with an automotive type compression tester while the engine was cold and had 140 lbs in both cylinders. Wish I had a leak down tester but I don't. Thanks in advance

Just playing around went and stated it up. Didn't smoke for first 5 min then only when going up hill with mower engaged also noticed at that point would smoke when you let off on throttle even on flat grade. So sitting still when you reved it up was ok but when you backed the throttle off blue smoke coming out the exhaust lots of it

Check your oil level. Pull both plugs and inspect them. Do they both look the same?

Rivets said:

Check your oil level. Pull both plugs and inspect them. Do they both look the same?

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Just changed the oil and filter and right on the mark, I had also changed the plugs and one was fouled with a grey deposit. Was just given this mower and either want to fix?? or replace. Don't have the tools to rebuild anymore so would look around for someone who does if it's worth rebuilding ??

If it is burning oil in the cylinder you should see a difference in the plugs. Was it doing this before you changed the oil?

Rivets said:

If it is burning oil in the cylinder you should see a difference in the plugs. Was it doing this before you changed the oil?

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I changed the oil in it as soon as I got it, I don't know anything about this machine as was given to me. as stated one plug was fouled with a grey matter since I changed them but only have maybe 1/2 hour on them and they both look ok and the same. I'm using Kohler filter and their blend oil 10w 30

I’d run it awhile and see if the problem persists.

When you go up a hill, the oil level ends up higher than the bottom of the cylinder
The rings are not good enough to expel the oil that is 1/2" deep 1/2 way along the cylinder .

Head gasket time? Sounds like you have good compression.

What is the engine and mower rated at for hills in degrees? Are you exceeding these values?

slomo

slomo said:

Head gasket time? Sounds like you have good compression.

What is the engine and mower rated at for hills in degrees? Are you exceeding these values?

slomo

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It's pretty steep, Have run a lot of tractors and zero turn on it over the years and never had a problem.

I have a LT 1050 that's 16 years old. I have had the blue smoke out of the left side for the last 10 years. The electric clutch
failed last year, giving me an excuse to buy a new zero turn. I'm considering investing in a new clutch, because I like my old Cub Cadet, for jobs where I don't want to use my new mower. I cut about two acres, and some of it is rough on mowers. My repairman tells me I have a bad oil ring. He said to run it till it stopped, then we would decide to rebuild or replace. If the smoke doesn't bother you, use it. Just keep the oil checked.

Replaced both head gaskets, Both gaskets did fail. Haven't got a chance to try it out yet but sounds sweet running and the dipstick won't go airborne if removed while running. Thanks for all your help.

glennsjr said:

Have a Cub Cadet LT1050 that was given to me, 299 hrs on a Kohler Command 26 hp CV 730 When I go up hills to the right it start blowing Blue Smoke out of it. other wise it doesn't smoke. Any Ideas off the top of your head?? Did a compression test with an automotive type compression tester while the engine was cold and had 140 lbs in both cylinders. Wish I had a leak down tester but I don't. Thanks in advance

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When I go up hills to the right it start blowing Blue Smoke

blown head gasket is the only symptom that produces this exact symptom. If you can repeat this up at an angleat a step angle to left or right side down hill and it immediately starts the blue smoke - head gasket. Then you have to figure which side and usually is the up hill side but not a rule.

Sounds like a worn intake valve guide or valve seal.

VRR.DYNDNS>BIZ said:

When I go up hills to the right it start blowing Blue Smoke

blown head gasket is the only symptom that produces this exact symptom. If you can repeat this up at an angleat a step angle to left or right side down hill and it immediately starts the blue smoke - head gasket. Then you have to figure which side and usually is the up hill side but not a rule.

Click to expand...

Both Head gaskets were blown all fixed and running great