The Ford Barn - View Single Post - 1930 Sport Coupe 11 MPG, backfire when turned off

KGBnut · 08-01-2020, 07:49 AM

Backfire is typically an indication of running lean. A little more GAV may help.

Don't get too crazy comparing your fuel economy to others. I track my mileage very carefully (I'm nutty that way). In about 11,000 miles I have averaged 12.4 MPG and my car runs beautifully. I run a Zenith and do not have any sort of overdrive or modified running gear. My spark plugs come out coffee brown.

I live in Connecticut where there are lots of curves, steep hills, and stop and go traffic. I can't accurately compare my mileage to someone someplace like Kansas. Also, be careful comparing your mileage to anyone outside your home country. Much of the world uses the Imperial Gallon, which is 20% larger than the US gallon.

Make sure it is running well, and your spark plugs show proper combustion. Then just enjoy driving it.

Good luck,

Ken

08-01-2020, 07:49 AM	#17
KGBnut Senior Member Join Date: Jul 2011 Location: Southwestern Connecticut Posts: 931	Re: 1930 Sport Coupe 11 MPG, backfire when turned off Backfire is typically an indication of running lean. A little more GAV may help. Don't get too crazy comparing your fuel economy to others. I track my mileage very carefully (I'm nutty that way). In about 11,000 miles I have averaged 12.4 MPG and my car runs beautifully. I run a Zenith and do not have any sort of overdrive or modified running gear. My spark plugs come out coffee brown. I live in Connecticut where there are lots of curves, steep hills, and stop and go traffic. I can't accurately compare my mileage to someone someplace like Kansas. Also, be careful comparing your mileage to anyone outside your home country. Much of the world uses the Imperial Gallon, which is 20% larger than the US gallon. Make sure it is running well, and your spark plugs show proper combustion. Then just enjoy driving it. Good luck, Ken __________________ Style beats speed any day, and with a lot fewer tickets.