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nasty oil coming out of motor...
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Posted by: DVXchic

Well, we need some help, Has anyone had this happen to their YFZ. It started doing this a while ago, we tore the motor down and in the process of the rebuild replaced the impeller shaft and seal, everything else in the motor looked good and tight. It was running great, I noticed crap all over the swingarm so we pulled the hose off and found more of this

. We already know its antifreeze and oil, but we need to know why. we drained the oil from the motor and it was a little milky but not even close to what came from the hose. Help us please. heres a few pics so u get the idea.

Posted by: DVXchic

Heres another of the motor

Posted by: DVXchic

and another of how chitty the oil looks

Posted by: kendog57

you may have a blown head gasket or you have a gasket let water into your motor or somehow water is getting in.

later kenny

Posted by: bad01300ex

that deff doesnt look good

i would find out what is the problem before riding anymore

Posted by: d3ktrix

Is the bike low on coolant?

In a car this would be a sign of a blown head gasket, dunno if the head on a quad is the same as a car tho in the way it seals on.

If the bike is low on coolant then you know its antifreeze getting into your oil and there is a bad seal somewhere, if not, did you submerg your airbox or something?

Ive never seen oil that white in my life, what ever its mixed with, its a lot of it :P

Posted by: dshfearh

check the water jackets too. i thought mine was the head gasket until i checked the water jackets and found a crack.

Posted by: racemx

quote:
Originally posted by dshfearh
check the water jackets too. i thought mine was the head gasket until i checked the water jackets and found a crack.

mabe your water pump seal is bad and it making it go into the motor

Posted by: dshfearh

nah i dont have this problem now. but yeah the water pump seal was the first thing i checked along with the head gasket. finally after the third time i decided it would be smart to check the water jackets and whatta ya know?

Posted by: DVXchic

It has a new head gasket and waterpump seal, but we have never checked the water jacket, so i guess thats a good place to go next. Thanks for all your input, its much appreciated.