im new to the forum,
i just bought a 1990 4 cylinder 5 speed 4wd trooper with 146000 miles on it. and i just love this thing it runs great it's in really good shape it needs all the useual stuff like oil change tune up ect. my brother and i put about 150 miles on last saturday and noticed it was useing a lot of fuel .

i pulled it in our shop checked all the fuel lines i could find changed fuel filter. had a friend mash the gas while i laid under it thinking it was loosing gas while driveing i cannot find a leak any where.
i was wondering if anyone else has had this problem or could give me some ideas on how to fix it. it's only getting about 12-14 mpg or is this normal for these vehicles. my z71 gets better than that any help at all would be greatly appreciated. thanks wes

 

i have a 92 trooper and im getting about 19 miles mpg dose that year have a o2 senser and have you change the fuel filter and have you check the cpvc valve

 

Does the inside of your oil cap look like a chocolate milkshake? If yes to any of these, you are looking at a pretty hefty repair. Good Luck