Exhaust and fuel economy
03-17-2019, 06:55 PM
#1
Exhaust and fuel economy
I have a 07 5.4. I have kept up to date on changing plugs, fuel filter, air filter, oil and filter. Truck runs fine. I noticed or it seems like my fuel usage has gone way up in the last half year or so. I have never kept track of or documented mileage other than just the fuel gauge. Last summer I ripped my tailpipe off at the outlet of the muffler while 4x4ing. It's 3 or feet long. Never bothered replacing it. A friend mentioned that could definitely have something to do with reduced fuel economy due to the back pressure difference. Is this plausible? What else are the things I should look at?
03-17-2019, 08:07 PM
#2
Member
Start with actually calculating the number. If you're mid-teens, you're right where you should be.
Have you cleaned out those VCT solenoids?
Where are you located? The last half a year or so means much colder temperatures, and all engines use more fuel when the temperature goes down for a variety of reasons, most based in physics and 1 based in practice...
Have you cleaned out those VCT solenoids?
Where are you located? The last half a year or so means much colder temperatures, and all engines use more fuel when the temperature goes down for a variety of reasons, most based in physics and 1 based in practice...
03-17-2019, 09:59 PM
#3
Start with actually calculating the number. If you're mid-teens, you're right where you should be.
Have you cleaned out those VCT solenoids?
Where are you located? The last half a year or so means much colder temperatures, and all engines use more fuel when the temperature goes down for a variety of reasons, most based in physics and 1 based in practice...
Have you cleaned out those VCT solenoids?
Where are you located? The last half a year or so means much colder temperatures, and all engines use more fuel when the temperature goes down for a variety of reasons, most based in physics and 1 based in practice...
03-18-2019, 06:48 AM
#4
Mark
iTrader: (1)
I have a 07 5.4. I have kept up to date on changing plugs, fuel filter, air filter, oil and filter. Truck runs fine. I noticed or it seems like my fuel usage has gone way up in the last half year or so. I have never kept track of or documented mileage other than just the fuel gauge. Last summer I ripped my tailpipe off at the outlet of the muffler while 4x4ing. It's 3 or feet long. Never bothered replacing it. A friend mentioned that could definitely have something to do with reduced fuel economy due to the back pressure difference. Is this plausible? What else are the things I should look at?
