I am trying to figure out why my fuel mileage is so crappy. Even if I drive my car normally it still sucks up a ton of gas. I do have a check engine light but it is for a small EGR leak. (at least im pretty sure it is) but i dont think my list of mods could cause bad gas mileage. and i have a new 02 sensor, but a lot of oil got burned before my new motor, could that have clogged the 02 sensor up a lil? but it kind of sounds like its running rich, not really misfire, but too much fuel, and i can smell it pretty good too. any ideas?

1992 Plymouth Laser
-Bone stock for now.

Check the codes again.

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'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

what kind of mpg are we talking about 18-20, 20-23, 23-26??? cause i average 23 but my car is running rich as shit and i think the timing is retarded like 2 degrees or so.

my car will sound like, bumbabumbubavrooooooooooooooomrooooooooahhhhhhhhhhhhh, kishhhhhh
www.dsmregistry.com/detail.php?carid=643
VW= The joy of driving
DSM= The frustration of fixing

im starting to wonder if my timing is correct. my idle does sound a lil crappy, but the tach is extremely steady.

1992 Plymouth Laser
-Bone stock for now.

when was the last time you cleaned the filter on your cai

Don't work for the system, Let the system work for you.

or cleaned your fuel injectors.

Shit I got my injectors cleaned proffesionally as well as the WHOLE fuel system for like $70 USD.

I got 150 miles more out of a tank of gas.

I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

I'd try checking your codes again as mentioned. It could be any number of things. For whatever reason the ECU believes it is not getting enough fuel and is therefore sending more. Double check your timing marks too, it should be dead on. In my experience 2GNT's really on run and idle properly when timing is dead on. There really seems to be no forgiveness.

1999 Eclipse GST 4G63

02 sensor.......can go bad and not throw codes. if its more than say 5 years replace it anyway.

Terry
96 Eagle Talon ESI....Daily driver

97 Eclipse.........

Thank you code4 for the avatar.

your problem is with the EGR leak...i did a temp fix on mine to see if it mattered and i went from 200miles on a tank to over 300 by just getting rid of the CEL...i removed the fix and mileage immediatly went down.

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1999 Kalapana Black RS-T 14.50@98.38 sold. never forgotten
2003 Mustang GT 11.97@116.48 fun, yet impractical
2003 Escape better for 2 young children.