Author Topic: puzzled  (Read 8533 times)

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Offline biker

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puzzled
« on: March 28, 2015, 02:13:49 pm »
I have a Kohler engine that will start running then suddenly start smoking blue oil smoke and blowing gas and oil back through the carb and exhaust. After a while it will fire up run for a minute then do it all over again.  I have no Idea Any ideas before I tare into it?? :confused: Its a 16 hp ohv in a Sears mower.

Offline Jim Knutson

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Re: puzzled
« Reply #1 on: March 28, 2015, 03:17:43 pm »
Check to make sure the crankase breaher is working,  it sounds like it is building crankcase pressure to me.
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Offline PJG56

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Re: puzzled
« Reply #2 on: March 28, 2015, 04:30:25 pm »
Head gasket blown
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Offline biker

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Re: puzzled
« Reply #3 on: March 29, 2015, 10:03:13 am »
Did some more checking this am and its blowing out the breather tube. Cranked and ran fine for 20 min so I got on and put it in gear and all of a sudden it started blowing out breather tube and trying to die. Seems worse when governor kicks in. It acts as if something is sticking then un sticking, sounds stupid but that's it so far.

Offline fx28

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Re: puzzled
« Reply #4 on: March 30, 2015, 12:54:08 pm »
More than likely head gasket is blown as PFG56 says.    usually will start smoking when load is applied.  Also check for being overfull on oil, carbs can leak and drain into crankcase and raise oil level. a lot of times it thins the oil down so much it makes it hard to read on stick. Check air filter for oil as well.   If your breather is puking oil it normally will get into air filter as well

Offline GRUBDIGGER

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Re: puzzled
« Reply #5 on: March 31, 2015, 03:27:24 pm »
More than likely head gasket is blown as PFG56 says.    usually will start smoking when load is applied.  Also check for being overfull on oil, carbs can leak and drain into crankcase and raise oil level. a lot of times it thins the oil down so much it makes it hard to read on stick. Check air filter for oil as well.   If your breather is puking oil it normally will get into air filter as well

MAKE SURE THERE IS NO GAS IN THE OIL. IF IT IS,YOU WILL HAVE TO REBUILD THE CARB AND CHECK THE HEAD GASKET. SOMETIMES ALL THAT GAS AND OIL IN THE CYL. WILL CAUSE THE HEAD GASKET TO BLOW.
JOHN HERRING
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http://wwwtsrm.smfforfree.com/

Offline biker

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Re: puzzled
« Reply #6 on: March 31, 2015, 03:40:24 pm »
BINGO   We have a winner. Drained oil, lots of oil. Have not filled crankcase as didn't have proper oil but I'm pretty sure that's what happened. Will try new oil and a good dose of sea foam in gas and see what happens. Many thanks to those that replied.