BIG PROBLEM: Im only getting 8 MPG. I need HELP!!!!
#1
#3
worn suspension components, low tire pressure, super dirty air filter, dirty fuel filter, failed/failing oxygen sensor(s) (sometimes they toss a code, sometimes they don't), possible exhaust leak, super lead foot
Give some more specifics....
Give some more specifics....
- how are you calculating mileage?
- do you have larger tires?
- when was the last time you changed your oil (including filter)?
- when was the last time you changed your air filter?
- when was the last time you changed your fuel filter?
- when was the last time you checked tire pressure or had your tires balanced and rotated?
#6
Im calculating it based on the miles driven divided by the gallons in the tank. If I drive 90 miles (three round trips to work) and have 13 gallons in the tank then that is how im calculating.
I have a K&N intake. I check the air filter regularly. I also check the MAF regularly. I do have a spindle lift w/ 33 BFG's. I have a si/do flowmaster. I had the oil changed about 2000 miles ago so I will be due in about another 1000. The fuel filter was replaced around 11000 miles ago. The tires were just balanced when they were put on about 4 months ago. I dont have a lead foot so I know that is not the problem, I dont even gun it at green lights. It is possible that there is an exhaust leak but I wont know until I put it on the jack Saturday.
I have a K&N intake. I check the air filter regularly. I also check the MAF regularly. I do have a spindle lift w/ 33 BFG's. I have a si/do flowmaster. I had the oil changed about 2000 miles ago so I will be due in about another 1000. The fuel filter was replaced around 11000 miles ago. The tires were just balanced when they were put on about 4 months ago. I dont have a lead foot so I know that is not the problem, I dont even gun it at green lights. It is possible that there is an exhaust leak but I wont know until I put it on the jack Saturday.
#8
Number one: youre odometer is reading approx 10% slower/less than you actually are going because of those 33's and I assume you don't have a calibrator or a tuner to correct for the tire change.
Number two: try out a couple tanks with Lucas Oil fuel treatment/injector cleaner. That stuff is the shiz!
Number two: try out a couple tanks with Lucas Oil fuel treatment/injector cleaner. That stuff is the shiz!
#10
Figuring on 13 gallons is faulty. take your milleage, divide the number of gallons it takes too fill back up by the mileage, and thats the actual (close) MPG. I have a 15 gallon tank, and I never put more than 14 gallons in on fill up. Also, as previously stated, bigger tires will throw the actual miles on the odo off a bit.
#11
Number one: youre odometer is reading approx 10% slower/less than you actually are going because of those 33's and I assume you don't have a calibrator or a tuner to correct for the tire change.
Number two: try out a couple tanks with Lucas Oil fuel treatment/injector cleaner. That stuff is the shiz!
Number two: try out a couple tanks with Lucas Oil fuel treatment/injector cleaner. That stuff is the shiz!
#12
Ive tried the Lucas treatment the past few fill ups. I dont have a tuner. I was thinking about plugs and wires. I bought the truck 3 years ago with 85000 miles on it. It now has 115000 miles. God only knows how many miles those plugs have on them. I like to do all of my work myself but these plugs in the SOHC seem like a b*tch to do. If any one has any pointers on how to do them easiest let me know. I got under her yesterday to look at the pipes and it appears that the RTV sealant has worn away from where the y pipe meets the cats. If that little leak could be causing all of this then I would be happy.
#13
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Stop!!!
Before you try throwing money at it, WHAT DOES THE EXHAUST SMELL LIKE?
Most people's comments have been related to bad combustion, which would to un-burnt fuel in the exhaust which you might be able to smell. If it smells like the engine is running rich then you know that it's bad combustion. At 8 mpg I'm pretty sure you're going to smell it.
Stupid question: Is the check engine light on?
Before you try throwing money at it, WHAT DOES THE EXHAUST SMELL LIKE?
Most people's comments have been related to bad combustion, which would to un-burnt fuel in the exhaust which you might be able to smell. If it smells like the engine is running rich then you know that it's bad combustion. At 8 mpg I'm pretty sure you're going to smell it.
Stupid question: Is the check engine light on?
#15
Stop!!!
Before you try throwing money at it, WHAT DOES THE EXHAUST SMELL LIKE?
Most people's comments have been related to bad combustion, which would to un-burnt fuel in the exhaust which you might be able to smell. If it smells like the engine is running rich then you know that it's bad combustion. At 8 mpg I'm pretty sure you're going to smell it.
Stupid question: Is the check engine light on?
Before you try throwing money at it, WHAT DOES THE EXHAUST SMELL LIKE?
Most people's comments have been related to bad combustion, which would to un-burnt fuel in the exhaust which you might be able to smell. If it smells like the engine is running rich then you know that it's bad combustion. At 8 mpg I'm pretty sure you're going to smell it.
Stupid question: Is the check engine light on?
#16
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(Trying to chase something down, all the while thinking that the CEL hasn't tripped when the bulb has really just burned out could lead to a real head scratcher and a lot of wasted time)
#20
#21
I dont get why people cant calculate gas mileage correctly. fill up the tank, reset the trip meter, drive for a while, fill er up again, divide the mileage by how many gallons you put in. that is the ONLY accurate way to figure it out. how many times a week you fill up means nothing... lol
#22
I dont get why people cant calculate gas mileage correctly. fill up the tank, reset the trip meter, drive for a while, fill er up again, divide the mileage by how many gallons you put in. that is the ONLY accurate way to figure it out. how many times a week you fill up means nothing... lol
#23
The check engine light works fine. It comes on when I turn on the engine for the first few seconds and Ive got an entire led setup so it is super bright. Im still playing with it all. I checked the exhaust and nothing smells out of the ordinary. I have noticed a very low idle if that helps any in diagnosing it.
#24
I dont get why people cant calculate gas mileage correctly. fill up the tank, reset the trip meter, drive for a while, fill er up again, divide the mileage by how many gallons you put in. that is the ONLY accurate way to figure it out. how many times a week you fill up means nothing... lol
#25