i need a ballpark on mpg /////on a 93' leg wagon whould get......

it's a non turbo ,auto....232k.

just had the wire's and plugs changed...not getting jack..about 20mpg

any suggestions?

spark

at 232,000 the fuel injectors are most likely dripping/leaking or not up to original performance. i'd have them rebuilt. others have posted rebuild results here and i have my sheets. unless they're making the numbers/data up then there is significant improvement after having 200,000 mile injectors cleaned. i send mine to RC Engineering, about $20 - $25 for each injector. there's another company witch...something or another that does them for about half the price. these companies completely rebuild them and give you before and after test results of flow characteristics. fuel injector cleaner might want to try that first if you don't want to spend the time/money on a complete rebuild.

 

also replace the distributor cap/rotor

 

O2 sensor

 

check tire pressure

 

installing new ground wires can be beneficial if the connections are dirty, rusted or corroded at all.

 

do a compression test, at this mileage you could have some loss of compression, though 20 is really low for highway mileage. 20 mpg might be about right for auto, city driving, lower compression due to age, AWD trans....etc.

 

here's another thread on the subject:

http://www.ultimatesubaru.org/forum/showthread.php?t=53219

my gas mileage went up a mpg or two in my 97 impreza after i did a break job. all was fine, i was just replacing the pads and wasn't doing the brake job for gas mileage reasons. i assume the caliper slides were a just sticky enough to make the pads ride on the rotors more than necessary. i took all highway trips before and after and noticed the difference as i always keep track of gas mileage on trips. regrease the slides on the calipers to make sure there's as little resistance on the rotors as possible.

FYI: my '93 legacy wagon (auto, non-turbo, AWD) gets low 20s for city driving, but significantly higher on the highway (25-27). From what I hear, that's pretty normal.

My 91 legacy wagon (auto, non turbo, 4 wd, 189,000 km) get about 24 in my daily commute and about 29 on long highway trips. 20 sounds low but it's hard to compare what is considered city driving. I don't do a lot of stop and go, stuck in gridlock driving.

You guys are getting better than me. My 93 leg wag is getting well under 20 in the city, and maybe a little more than 20 on the highway. The ski rack may make the highway mileage a little worse, but probably don't explain the crappy city mileage. Oh, and mines a baby. 138K. On my last tank, I got 14.9 and it was all city. Granted, I drive it like a car was meant to be driven. I don't have a throttle so much as I have on on/off switch attached to my foot.

 

Jordan

Thanks for the update gang..........spark