Oil leaking from exhaust box at front of engine . Lots of smoke ? Why. ?!
If oil is leaking from the muffler most like you engine is overfilled.
HIgher than normal level can be cause a leaking carburetor filling the crankcase with gas.
If it leaking from the valve cover then it needs resealing.
SOURCE: Oil leak on riding Craftsman LT2000 (Kohler)
Fortunately, the engine oil doesn't go through any rubber hoses, so they are mouse-proof. The oil probably leaked out through an engine seal. Oil on the engine surfaces would smoke when it gets hot. Check your oil level and top it up if necessary, before you run the engine again. The engine can run fine even with a slow oil leak; you just have to watch the oil level from time to time. The leak could be easy to fix - by tightening up a few bolts -- or expensive.
The gas runs through rubber hoses, though. If mice ate through that, I think you would have smelled the gasoline, and the engine wouldn't run for more than a few seconds. But if you see a severed hose, you should replace it. Take it off and bring it to a mower shop or auto supply shop, and buy something the same diameter. Inexpensive.
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SOURCE: oil dripping from front of
Put a new gasket on the valve cover ort tighten the bolts on the current.
SOURCE: I have a LT1000 19.5 HP Craftsman engine that
Hi and welcome to FixYa. I am Kelly. Your oil rings are most likely stuck against the piston skirt. This can happen if the engine overheats or the engine oil is not being changed at the recommended intervals.
There is a couple of ways to try and free them up without an engine tear down. The first way is to use a 30W detergent oil vs a 30 SAE oil. Drain the engine and add detergent oil. after 5 to 10 hours of use do it again. The go back to regular 30W SAE oil. Detergent oil will make the aluminum crankcase appear internally polished if it is working / cleaning things up.
The second way is to over drain the oil and then fill the engine up as best you can i.e over-servicing big time with engine flush. Make sure an OLD spark plug is installed. Turn it thru a few times by hand and let it sit over night. Next day drain engine flush service with DETERGENT oil for at least a 5 hour operating interval and then change oil back to 30W SAE oil. If your in a hot environment it is recommended that you always use Detergent oil.
Pennzoil HD30 = detergent oil (Example only) Use any brand 30W detergent oil.
If the above does not lessen the oil blow by then the only option at that point would be to change the piston rings / inspect cylinder bore wear. I would not give up on this engine. B & S parts are available for your engine.
I have brought a lot of engines back to life by simply doing rapid interval detergent oil changes.
A few others took the engine flush soaking to get them to snap out of it... Of course there are some that have over-heated so badly there is no hope other than parts changes. I don't think your engine is to that point yet.
Just an note... if you need help with parts info I will need your ENGINE model number that is on stamped on the air shroud and or the block data plate.
Thanks for choosing FixYa.
Kelly
SOURCE: I have a 20hp,Craftman lawn tractor, single
If you keep running it in this condition, it will eventually seize up on you. You are going to need to rebuild the motor. Oil is getting by the ring on the piston. And gas is getting into the crankcase because it's being mixed with oil and not burning properly.
My advice would be to stop using it and get it fixed, before you cause even more damage.
Good Luck!
Jim
SOURCE: I Have a craftsman ys4500 tractor 42in deck, 21
You may want to check the choke cable to see if its working properly.
The most common cause of blue exhaust smoke is oil leaking past engine seals and into the cylinders where it then mixes and burns with the fuel. This is most frequently seen in older or high mileage cars with worn seals and gaskets. It only requires a very small amount of oil leaking into the cylinders to cause excessive blue exhaust smoke.
Blue exhaust smoke only at start-up can indicate worn piston seals or damaged or worn valve guides which may also cause a rattling noise. An external engine oil leak can drip onto hot engine and exhaust parts causing what appears to be blue exhaust smoke. Other possible causes of blue exhaust smoke include: piston wear, worn valve seals, a dirty or non-functioning PCV valve, worn piston rings, an intake manifold gasket leak, worn engine oil seals and possibly even head gasket failure.
Oil leaking into the cylinders can cause a rough idle, misfire and fouled spark plugs. In addition, a reduction in power and oil loss can be indicators that the blue exhaust smoke is caused by an internal engine oil leak. Internal engine oil leaks can also allow fuel to mix with the oil in the crankcase which will degrade the oil and prevent it from adequately protecting the engine.
Operating a car with a severely dirty oil filter, air filter or improperly functioning PCV valve can also sometimes result in engine oil blow-by, oil loss and blue exhaust smoke. Periodically checking the engine oil level with the oil dip stick will indicate if there is excessive oil consumption. Higher viscosity engine oil can sometimes temporarily reduce the amount of blow-by; however, this is not generally recommended. Excessive blue exhaust smoke indicates a possible internal engine oil leak that should be inspected by an ASE certified mechanic.
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