Gas consumption

ford
explorer

#1

The car runs fine but all of a sudden I am only getting about 4 mpg. There are no visible gas leaks and go gas smell. Any suggestions as to what i should check?


#2

Please give the year, milage, and recent history of the car to help the guys here figure out a possible diagnosis.


#3

It is a 1998 that has 114,000 miles. Everything seems to be fine. This is a new issue that seems to have come from nowhere.


#4

leaky gas tank? It is a metal or composite tank?


#5

tank is metal. Does not appear to have a leak any where. No drips and no gas smell.


#6

Have you lost some engine power, particularly at high speeds?
Is the check engine light on?
Has the check engine light ever flashed? Has the O/D off light ever flashed?
Is maintenance up to date? (For example, when were the spark plugs last changed?)
Any smoke out of the exhaust?
How are you determining the MPGs?


#7

do you have a locking gas cap? does someone you dont trust have a key to it? could your gas be getting siphoned in these hard times by a night crawling thief?


#8

Still have good power. check engine light is not on. engine light nor O/D have flashed. No smoke from exhaust. I am not sure of last spark plug change. Oil and filters are changed regularly. I only drive this car to work and back. I am determining milage based on distance traveled per tank of gas.


#9

I would install a locking gas cap and double check the fuel lines for leaks. Your truck is old enough to have rusted through the fuel lines. To get 4 mpg, the fuel has to be leaving somewhere. I don’t think the engine can use that much fuel and still run, especially without symptoms.


#10

I heard mileage was bad, but that seems really bad. Regular maintenance, air filter gas filter, spark plugs etc. up to date? No warning lights?


#11

I’m having a very hard time seeing a vehicle like this getting 4 MPG while apparently running fine, emitting no smoke, and no CEL to boot.

Thieves in the night or whatever but it does not sound like an engine performance fault.