Honda 350 01 burning oil bad - Honda Foreman Forums : Rubicon, Rincon, Rancher and Recon Forum

marklar · 10-12-2009, 10:57 AM

Hi
I have a rancher 350 es with 300 hrs on it. I rode it hard this last weekend and swamped it. recently it has been burning oil badly. I took the motor apart and found only the exhaust valve side to be fouled up with black residue. I am going to rebuild the top end with standard piston and rings and a new gasket kit. im thinking it is the valve gasket, so hopefully the rebuild should solve it. could it be something else? Any suggestions/help on this would be great.

Honda Mechanic · 10-12-2009, 11:20 AM

When the engine is apart everything should be measured , if the cylinder is worn out of round a std piston/rings may not stop the smoking ..

marklar · 10-12-2009, 12:58 PM

the cylinder seemed fine. i also forgot to mention that the motor made a clicking noise. however when i put the motor back together after inspection, the clicking stopped. It still mokes bad.

pacobeagle · 10-12-2009, 01:35 PM

piston rings.....mine was smoking like a chimney. Replaced the rings.....no smoke!!!

marklar · 10-13-2009, 11:26 AM

should i hone the cylinder before i install the new piston?

**toodeep** · 10-13-2009, 11:42 AM

Yes it should be honed, checked for clearances and out of round.

marklar · 10-13-2009, 10:43 PM

Yep checked clearances and everything was good except the piston. it was .004" under service limit. what type of hone should be used?

10-12-2009, 10:57 AM	#1 (permalink)
marklar Honda Rider Join Date: Oct 2009 Posts: 13	Hi I have a rancher 350 es with 300 hrs on it. I rode it hard this last weekend and swamped it. recently it has been burning oil badly. I took the motor apart and found only the exhaust valve side to be fouled up with black residue. I am going to rebuild the top end with standard piston and rings and a new gasket kit. im thinking it is the valve gasket, so hopefully the rebuild should solve it. could it be something else? Any suggestions/help on this would be great.

10-12-2009, 11:20 AM	#2 (permalink)
Honda Mechanic Honda Red Wing Rider Join Date: Jul 2005 Location: Canada Posts: 1,229	When the engine is apart everything should be measured , if the cylinder is worn out of round a std piston/rings may not stop the smoking ..

10-12-2009, 12:58 PM	#3 (permalink)
marklar Honda Rider Join Date: Oct 2009 Posts: 13	the cylinder seemed fine. i also forgot to mention that the motor made a clicking noise. however when i put the motor back together after inspection, the clicking stopped. It still mokes bad.

10-12-2009, 01:35 PM	#4 (permalink)
pacobeagle Honda Rider Join Date: Sep 2009 Posts: 6	piston rings.....mine was smoking like a chimney. Replaced the rings.....no smoke!!!

10-13-2009, 11:26 AM	#5 (permalink)
marklar Honda Rider Join Date: Oct 2009 Posts: 13	should i hone the cylinder before i install the new piston?

10-13-2009, 11:42 AM	#6 (permalink)
toodeep Administrator Join Date: Aug 2007 Location: south dakota Posts: 6,648	Yes it should be honed, checked for clearances and out of round.

10-13-2009, 10:43 PM	#7 (permalink)
marklar Honda Rider Join Date: Oct 2009 Posts: 13	Yep checked clearances and everything was good except the piston. it was .004" under service limit. what type of hone should be used?

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