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Main Area => Projects / Builds, Racing and Tech => Topic started by: buddhahb on August 28, 2013, 04:47:25 PM

Title: Gas in oil...
Post by: buddhahb on August 28, 2013, 04:47:25 PM
I had a float needle that wasn't seating, so I know have a bit of fuel in my crankcase. Not much, the oil is just slightly over full.

My question is with the fuel in the oil, should I allow it to warm up before changing the oil? I would do it cold but I want to be sure to get all the bad oil out.

Is it safer to do it cold or run it just a little to warm it up first? The bike has got less than 8k miles on it, I really don't wanna spin a bearing or anything.
Title: Re: Gas in oil...
Post by: Big Rich on August 28, 2013, 05:49:58 PM
Nah, drain it when it's cold. Make sure you change the oil filter too though, since it contains some oil as well. Personally, I would let it drain for an hour or two with the bike on the centerstand to get as much out as possible though.
Title: Re: Gas in oil...
Post by: mustangGT90210 on August 29, 2013, 06:26:27 AM
Don't ride it, change the oil fast, and you can do it when cold. The gas and oil mix gives it a viscosity equal to soapy water so it'll drain right out. I was chasing issues like that for 2 months and 4 oil changes due to contamination. Turns out my fuel lines were routed to the wrong nipples and bypassed the petcock entirely
Title: Re: Gas in oil...
Post by: buddhahb on August 29, 2013, 03:07:51 PM
Thanks to both of you! I had planned to change the oil filter, and I will not be riding it until the oil is changed and the carb is rebuilt.

I have an EX500 as my primary bike, the GS is just a cool project I picked up in a trade. So no problems letting it sit until i have everything perfect on it.
Title: Re: Gas in oil...
Post by: yamahonkawazuki on August 30, 2013, 08:20:06 AM
Quote from: buddhahb on August 28, 2013, 04:47:25 PM
I had a float needle that wasn't seating, so I know have a bit of fuel in my crankcase. Not much, the oil is just slightly over full.

My question is with the fuel in the oil, should I allow it to warm up before changing the oil? I would do it cold but I want to be sure to get all the bad oil out.

Is it safer to do it cold or run it just a little to warm it up first? The bike has got less than 8k miles on it, I really don't wanna spin a bearing or anything.
you CAN pull the plug wires to circulate the oil to get it out. spin it in spurts OR if you have to heat it up, put a space heater near crank case. if not just drain it cold. takes a tad longer but id not run it contaminated. at all, not even briefly.