How to get oil out of a g16 muffler

[thetucks]

I have a 97 Yamaha g16 that was smoking pretty bad. I rebuilt the motor input a bigger piston new rings and had iy bored .25. Everything is back together now and it runs awesome butt still smokes like crazy. I took the exhaust muffler off and started it and it does not smoke at all. I'm guessing there is oil inside the muffler? How can I get it out? Thanks

[Dave in VA]

Put the muffler in a fire pit. Muffler BBQ.

[thetucks]

how long do I need to cook it for? will it hurt the muffler?

[sho305]

It will take all the paint off it but you can use high temp paint like for a gas grill or headers, etc. Usually the flames will come out when it stops its done, not long in a hot fire.

Or you can just run the heck out of it and it will burn out in maybe 15-20 min of constant running with lots of throttle. Make sure you run it slower to cool it off after it burns out and stops smoking. muffler will get real hot. It may smell for a while but it will go away. Common thing for G1 carts with a much larger muffler.

[thetucks]

im having another issue. It seems that if I push the pedal all the way down the cart will just bog down. If I lightly feather it then It will take off but if I ever mash it to the floor it just bogs. If I choke it and push it to the floor it will run like its suppose to. Im thinking its running lean meaning a air leak but I put new gaskets on each side of the carb and the spacer. the air box is sealed. I even put a brand new carb on it. same issue.

[nota]

not enuff gas is getting in it now aka lean
could be extra air is leaking in
or gas flow is blocked by dirt in carb float-bowl or jets
or a little bit of water in the float bowl
or the gas pump is going weak and can't flow enuff gas

usually dirt, water, or varnish in the carb somewhere
but with your new carb and bits
I suspect the gas pump

[sho305]

Take the hose off the carb, it should spurt fuel out on the starter.

It is easy to hog the jet out a little, I did mine when I took the silencer off the airbox. You can buy a jet drill set for $10 or get a torch tip cleaner and file it out. Do it enough so it pulls good, make sure its warm when you do this, make sure it has no air leaks/etc first of course but some carts are just lean enough you need to bump the jet up some.

[spriddle]

Also check your gas cap. Its rare but a bad cap can cause this also. What type of fuel filter are you using? Yamahas are picky about air fuel mixture. Make sure the fuel lines are the correct size/diameter as factory if you replaced them.

Check the fuel pump too. May be full of grit. You can remove it, disassemble, and clean. Just be careful with the little rubber gasket when you split it apart (separate slow).

[David Maner]

Originally Posted by thetucks

I have a 97 Yamaha g16 that was smoking pretty bad. I rebuilt the motor input a bigger piston new rings and had iy bored .25. Everything is back together now and it runs awesome butt still smokes like crazy. I took the exhaust muffler off and started it and it does not smoke at all. I'm guessing there is oil inside the muffler? How can I get it out? Thanks

I've had great success with putting a stopper in one end of the muffler and then filling it with carb cleaner and let it set for a day or so then drain it and take it to a car wash and run soapy water thought it until the water comes out clean. Take a container to catch the cleaner when you drain it so you can immediately wash it out with the hot soapy water before it has a chance to dry out any.

On the bogging I'd think that you might be needing to enlarge the main jet in the carb because of the increase in displacement. A partially clogged muffler can cause this problem too.