ClassicOldsmobile.com - View Single Post - New Engine & Carb, yet High CO readings-Wont pass emissions?

t0oL · July 24th, 2007, 08:16 AM

if it's running rich with borderline CO, MAYBE you could wait until the gas tank it really low on gas and add lots of methanol to the gas in the tank.
It has Oxygen already in it and would affect the CO readings until you run out.
Look for methanol in HEET gas line deicer. It's reasonably priced and 3-4-5 little bottles to a really really low tank of gas (like the last gallon) could change the carb from rich to lean, as a methanol carb would use about twice the volume as a gas carb would. The added Oxygen as CH3OH would also aid in producing CO2 instead of CO. A double emissions whammy.

July 24th, 2007, 08:16 AM	#17 (permalink)
t0oL Junior Member Join Date: Jul 2007 Posts: 3	cheaper solution, temporary if it's running rich with borderline CO, MAYBE you could wait until the gas tank it really low on gas and add lots of methanol to the gas in the tank. It has Oxygen already in it and would affect the CO readings until you run out. Look for methanol in HEET gas line deicer. It's reasonably priced and 3-4-5 little bottles to a really really low tank of gas (like the last gallon) could change the carb from rich to lean, as a methanol carb would use about twice the volume as a gas carb would. The added Oxygen as CH3OH would also aid in producing CO2 instead of CO. A double emissions whammy.