I've got a 1991 Sunbird with a Mercruiser 3.0 4 cyl. Has a Holley 2 barrel carburetor. Yesterday it used 10 gallons of fuel running for 2 1/2 hours at about 3,000 RPM. Is this normal ? Seems like awfully poor mileage/hours for fuel consumption for the little 4 banger. Thanks for any insight.
Phil
