Question about Yamaha 2005 Bruin 350 Auto 4x4
It has a new piston, rings, cylinder, oil pump and carb. Seems to have good oil flow. What else could it be?
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Posted on Jan 02, 2017
SOURCE: oil in coolant only
You might have a blown head gasket that is allowing one of your oil galleries in the engine to mix engine oil with the coolant after the oil pressure gets to a certain point. You might also have a cracked head causing the same type of problem.
Posted on Nov 11, 2008
The temp gauge being erratic should have been your sign. Are you sure its overheating or are you going by what you see being registered on the temp guage.Also after doing work such as water pump sometimes you will get air lock in the system you need to bleed the system after performing such a job. If the temp gauge is bad you need to replace it.
Posted on Jan 02, 2010
10 minuts really isnt enough time to even get up to operating tempature much less overheat. I would suspect from what you describe you may have a head gasket problem. compression from the cylinder will leak into the cooling system and push out the coolant. The fact that you have oil residue may confirm this. Does the temp guage read high when this happens or a warning light come on?... im suspecting probably not. There also could be an outside chance of a cracked head or block. most likely not but always an outside chance. Good Luck!!
Posted on Jun 16, 2010
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