The Ford Barn - View Single Post - New engine - intermittent backfiring

Mulletwagon · 10-18-2020, 10:41 PM

Might try some Marvel Mystery Oil as a first step. Squirt some directly in the carb and then add 4 oz. to a full tank of gas. Sticking valves are not unusual and MMO is often the cure.

10-18-2020, 10:41 PM	#3
Mulletwagon Senior Member Join Date: Jan 2019 Location: Florida Panhandle Posts: 585	Re: New engine - intermittent backfiring - stuck valve? Might try some Marvel Mystery Oil as a first step. Squirt some directly in the carb and then add 4 oz. to a full tank of gas. Sticking valves are not unusual and MMO is often the cure.