I bought a 93 GT recently and have been getting about 135 miles on a tank.
I replaced the distrib cap and roter. New oil and oil filter. New gas filter.
look at signature for mods. no smell of gas anywhere on car. Runs strong.
wires are in good shape (motorcraft) and plugs seem to be fine(also motorcraft). THe gap on the plugs is small not stock. would that affect gas mileage? No check engine light. 97k miles

any ideas would be helpful
thanx

 

gap the plugs to at least .055", the ignition is made hotter to handle the bigger gap and a bigger spark helps burn the fuel better. you don't mention your air filter, change it too, I'll bet it's dirty as hell for you to be doing this badly on mileage.

 

looked at it last night and it didnt look too bad
can you clean knn filters?
filled up this morning and got 165 miles on that tank.
i also ran 44k injector cleaner through it.

 

K&N sells a recharger kit for their air filters. You can get it at most auto parts stores that sells the filters. Be sure to follow the directions so you don't screw up your filter.

 

That 373 does it every time i had one in my 91 and it made me get terrible gas milage >>> Hay but i didnt really care though

 

it ain't the gear, it's that oversized heavy right foot on the go fast pedal that kills the mileage! lol

 

first how many galons are you putting in?..are you figuring right....I'm thinking your left foot is a size 10 and the right is a size 13..*L*

 

i dont even have my licence yet only my permit.
on my last tank i got 160 miles on it. better.
new spark plugs today.
size 14 by the way!!!

 

im on the same boat.....but i have a hyfire ignition should i leave my plug gap at .055 or take it up to 60 or 65?

us army issued me size 14 boots, man those things are huge...

 

55 is wide enough...the key to most aftermarket igintion is not really the primary spark but the secondary sparks being as powerful as the first to complete the burn process. have very low ohm wires is also key