Question about 2003 Yamaha YZ 250
2001 yamaha 125 oil is coming out of the tail pipe
I have a 2000 yz 125. just put a new top end on it after i changed the stock pipe to a FMF turbine core 2. I have exxissive black goo comming out of the tail pipe and it is hard to start after it dies. i am using a smokeless synyhetic at 32:1. I dont remember this problem to this extent with the stock pipe but memory fails me. Can anybody help.
Posted on Aug 21, 2009
This is not uncommon.
Things to check first would be your fuel mixture. You might be running a bit rich. You should be using a mix of 3.5 percent synthetic oil.
Being a 2 stroke, the tail pipe cartridge needs replacing from time to time, as it does collect oil with time. If the bike is a bit noisey change the packing.
Always remember that there is oil in fuel used on 2 strokes.
Lastly check the type of oil you are using. Mineral oil does tend to be a bit messy as the mixture requires around 5 percent oil.
Most off road stores now keep good LOW SMOKE oils such as Motrex.
Stick to good synthetic oils !
Posted on Feb 16, 2009
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