one backfire

[shootrig]

I am sure this has been asked and answered 1000 times; I did a quick scan and couldn't find a recent thread.

96 DS gasser - I have been messing with the throttle to black box rod, trying to find the sweet spot. I got this used so I have no idea if anything or everything has been tampered with. I seem to have it pretty close, I think.

It works great just buzzing around, but if I take it on a long haul, coming up to a stop sign, every once and a while, it will burp one loud backfire; and every once and a while it will act like it wants to keep chugging, for just a slight moment. Nothing consistent, just random - still annoying though.

Any ideas - I am thinking shorting the rod one more turn might get it, but I am not sure. Also wondered if coasting to a stop is pumping gas into it and that is causing it.

[ezgo on fire]

Is the gas old. The first thing I do is drain all the fuel and replace. To many people fill these carts up and it takes a year or longer to use it.

[shootrig]

Its half old, I put some fresh in it the other day. I would think old gas would make it act sluggish, not backfire. I thought only a rich mixture or excess unburned fuel (rich again) will cause a backfire. Maybe I am incorrect....

[ONEDAY]

Usually it back fires because the butterfly in the carb is not shutting all the way, that will cause a back fire when you let off the gas pedal