782 Cub Cadet overheating
 

I have a CCC model 782. It has the Kohler KT17 series II in it. It runs extremely hot....with steam and smoke coming from it eventually. I took all the shrouding off and it'd clean as can be....any ideas?

No oil leaks? Is the crankcase breather still attached to the air filter? What weight oil are you running?

no oil leaks. the hose is still connected to the air filter. and im running the cub cadet oil you buy from tsc. not sure what weight but it runs well in anything else i put it in. i forgot to mention, it doesn't like to idle. ive tried messing with the screws but nothing i try clears it up. could it possibly be out of time? runs perfect at 1/4 to full throttle. idle it just spits and sputters

Sounds like it is running lean. Your comment that it does not like to idle, points to this also. Look at the carb, and the connection to the intake.

I'd agree...... but the smoke?? Got to be leaking oil/ fuel somewhere to have smoke.....

My IH 782 with replacement KT17 II sometimes have faint smoke coming from the breather tube area. I only see it if I open the hood and look for it.

I wonder if this is the same thing that's happening to you.

I can't tell if it's coming from where the breather tube goes into the engine or if it's coming from the jug/head area. It has done this with both 15w40 and 30WT Amsoil synthetic. The engine doesn't seem to be running hot or leaking oil/fuel. It also idles just fine.

It has been doing this ever since I picked up the tractor this past winter. I've put around 20 hours on it.

Chris

If it is getting hot it will burn off whatever is on it - even dust/dirt/grime could give off the "smoke".

well you can see heatwaves coming off of it when i run it for 10 minutes....something aint right if it gets THAT hot.

What are you using to measure the temp? I don't think seeing heat waves is telling you much, you can see heat waves off a driveway.

my hand. it seems like it runs wayyyy hotter than it should. oh well run it till it blows i guess. then the mag 18 or command swap.

Why don't you try soaking/overhauling the carb. and setting it up properly ?? A lean condition will make them run hot. If it has the adjustable carb on it , it would be no big deal.

You could also check the timing. Does it have the right spark plugs in it ??

Does the tractor have the foam pads attached to the tank bracket and under the blower housing ?? Those are needed to help seal the blower housing to direct air over the engine. And yes , there is supposed to be a foam pad glued to the motor mount that the blower housing sits on. They are still available to buy or you could make something to do the same thing.

It is your tractor , but if the engine doesn't rattle or smoke , why not take some time and diagnose what the problem is ?? It may be just a good carb cleaning or the timing is off.

Good luck !!

You may want to consider something like this

http://www.summitracing.com/parts/sid-mt-pro

Then you will know if it is truly running hot and if it is where it's hot.

:bash2: Yeah, that's seems like a good way to check. Do you see if your oven is hot yet the same way?

Why does everyone think their air cooled engine runs hot? Of course it does. It's a motor, cooled with air. YES, it gets too hot to touch after running for ten minuets..... DUH! Grab a temp gun like Sam suggested and check it out.

You have three options:

1. Fix the Carb
2. Replace the Carb
3. Tell us that you concluded your experiment on how long it takes to blow up a lean running engine.

What are normal temp readings for the cylinder jugs while running? What would be concidered too hot?

Chris

Darrell, do you happen to have a pic of the foam, you're talking about in your post? If so, I'd love to see one. Thanks! :beerchug:

Allen , I knew there was supposed to be the foam around the tank stand , but i didn't realize there was supposed to be a strip on the bottom of the blower housing between the blower housing/engine plate until i brought home a 682 and 782 and both of them had it.

I just got both strips from partstree and put them on my 1872 and what a difference on airflow out the front of the tractor. They come peel/stick. I needed to do some engine repairs on my tractor and i had to pull the engine and i replaced them. You don't have to pull the engine to put the foam on the tank stand , but obviously you do for the bottom. It goes from one side of the frame to the other. I guess you could find something to place under the blower housing if you take the tank stand out.

I have a 482 that has a round piece of sheetmetal screwed to the tabs on the tank stand instead of the foam.

Best i can show you is from partstree , the foam is 14/15

Your not understanding what I'm saying. Of course any engine gets hot....but the mag 18 I had in my last 782 you could rest your hand on the side shields of the engine after 30 minutes of mowing and it'd be hot but bearable. Same with my 122, ford lgt100 and john Deere 210 This one after 10 minutes gets searingly hot. Like metal after its been welded or torched. Someone suggested the timing may be off....wouldn't that make it run bad at any throttle location?

Thanks Darrell, I appreciate it! I believe, it's missing on my 1872. I'm going to check the 782 tomorrow. :beerchug:

Lots of great responces to your problem however heres another. Did you check your muffler to see if its plugged with a mouse house or a rusted baffel thats out of place plugging the flow of exhaust gasses? A blocked exhaust will surely increse your internal engine temp and effect its performance.

This seems like a timely subject because my 1811 has just started to run hotter than usual and the idle has become unstable after it heats up. It has been rock solid for almost 5 years without any issues. I can smell the extra heat that was not there before if that makes sense to any of you. It is like the engine now puts out a hot oily smell that it never had before. I would suspect that something in the carb has probably made it run a little lean and that messed up the idle as well. Anyone know the best place to start to look for the problem? :beerchug:

your having the same problem im having.

Just out of curiosity, did either of you ever find a solution to your problem?

I agree, a lean carb makes crazy (and damaging) engine heat in any motor, and it does not take long to get hot either.

been waiting on a carburetor kit to rebuild it.