Hard starting - Oil Starved

Wangel

LawnSite Member
Location
Kansas
I have a 25 hp, Kohler Command engine. The engine developed an air pocket and was run about a minute or so without any oil. I fixed the problem and now the engine is hard to start. Meaning: Slow cranking. I put in a new battery and it helps a bit, but it required about 400 or 500 cca to start this thing. Once it starts, it runs fine. I have a few questions:

1) Will the engine smooth out a bit and wear in?

2) Will using synthitic oil help, or perhaps a lower weight oil?

I assume the tightness is in the pistons and rings? Anyway to free up the engine - Marvel Mystery Oil? Any Tips?
 

xcopterdoc

LawnSite Senior Member
Location
Parkton NC
A minute or so with out oil or oil pressure is enough to do damage. Nothing ever wears "in", it always wears out! Pull the plugs and try to turn it over by hand. It should turn freely, if not, I'd take it apart and look at the connecting rod where it attaches to the crankshaft. Also check the cyclinder walls for scoring.
 
OP
W

Wangel

LawnSite Member
Location
Kansas
I removed the plugs and cranked the engine. It still cranked slow. I decided to try and cut the grass. After about 20 minutes the engine sputtered, loss power, and started spurting oil under the engine somewhere. I assume the engine is trashed now?
 

Top Forums



Top