Lower gas mileage
Thread Starter
Intermediate
Joined: May 2002
Posts: 40
Likes: 0
From: Mukilteo WA
Lower gas mileage
I have a 2001 LS1 with 63000 miles and not getting the 26-27 highway mpg while cruising at 70 I used to get. Today it seems to average just over 24 mpg. It has a K&N cold air intake. Any ideas on what to looks at?
Paul
Paul
Burning Brakes
Joined: Mar 2014
Posts: 807
Likes: 239
tire pressure
spark plugs
plug wires
air filter cleanliness
3 mpg isn't a significant amount so I wouldn't be too concerned with something major going on.
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
Summer can put a big demand on fuel economy.
Thread Starter
Intermediate
Joined: May 2002
Posts: 40
Likes: 0
From: Mukilteo WA
Cars develop carbon build if you are not using the right oil and the right Oil life cycle for your driving. Over time this could effect how your car engages the fuel management system. Poor gas is a big culprit, plugs are usually not the problem unless they relate to a miss from a wide gap over time or a failed coil. You would notice these.. make sure you are using the best gas you can get and + - 2 mpg is nothing significant to be concerned about.
Summer can put a big demand on fuel economy.
Summer can put a big demand on fuel economy.
Yes, fuel economy this summer is the issue. thanks.
