My 67 SS just started running rough a few days after I filled it up. I suspect I may have some contaminated gas... anyone have any good tips/tricks to fix this without having to drain the tank and flush the system?

Second question...I'm hearing all kinds of stuff about what kind of gas, what grade of gas, and ethanol content etc. I have a relatively new Chevy 350 motor in the car and I've been putting ethanol-free regular unleaded gas in it. Anybody see any problems with that? Does the engine require premium gas?

Thanks,
Chris

 

Do you have a fuel filter before the carb? If not you really need to be running one just in case. Regular pump gas should be fine