Exhaust Smoke

[southam]

I have a CV740 with 2000 hrs on it..About once a week it seems locked up when you try to start it then it smokes real bad when it starts.. Any ideas what could be the problem ??

 

[mechanic mark]

http://www.kohlerengines.com/onlinecatalog/pdf/24_690_07_EN.pdf see page 19 troubleshooting.

 

[reynoldston]

I have a CV740 with 2000 hrs on it..About once a week it seems locked up when you try to start it then it smokes real bad when it starts.. Any ideas what could be the problem ??

Carbon buildup on top of the pistons.

 

[cpurvis]

I have a CV740 with 2000 hrs on it..About once a week it seems locked up when you try to start it then it smokes real bad when it starts.. Any ideas what could be the problem ??

Worn out valve guides.

 

[Lawnranger]

What color smoke? Be as specific as possible because it really makes a difference.

 

[southam]

blue oil smoke

 

[Lawnranger]

Oil entering the cylinder is usually from worn rings or valve guides and sometimes valve stem seals. In the case of oil consumption, I always perform a compression test and cylinder leak down test to help identify the problem. Sometimes you get lucky and after removing the cylinder head you discover the cylinder & rings are still in good shape and all you need is a new head. If it were mine, I'd remove the heads for inspection and replace as necessary. If the cylinders are damaged then I'd replace the entire engine if the rest of the machine is worthy of repower.

You can get a free service manual here: Kohler Engines: Owners and Service Manuals: Manuals and Maintenance

 

[Big- ed]

kohler fuel pumps fail and pour fuel into the crankcase carb needles fail and leak fuel into the cylinders this would explain the lockup condition diluted oil will cause an overfill condition and smokeing