Poor mileage

[ScoFF]

I seem to be getting poot gas mileage lately.
I have a stock 2001 protege LX 2.0. 15" winter tires on now, 30lb pressure.
It has about 130,000 (80,700 miles) km on it.

I just had a new timing belt done and my plugs were checked by Mazda and seem fine to them. The issue was before I got my timing belt done.

I filled my tank full and my light just came on after 415km of driving, mostly highway. That's 257 miles according to my calculator. That sounds really bad, what's average?

 

[sam1]

wow...thats pretty bad. Try running some seafoam thru it. Made a huge difference in my idle & gas mileage. If you search Seafoam, there are several recent threads about it.

 

[ScoFF]

Thanks, I'll have a look.

 

[mazda protege 2]

i got 605 km out of a full tank, before i added injector cleaner i got about 560

 

[ScoFF]

What fuel injector fluid do you guys recommend? I drive a little aggressively and usually always fill up after my gas light comes on so my lines might be a little dirty. I've never used any additives.

People mention Sea Foam, what's that?

 

[ScoFF]

I did some math today, my car should be getting 25 mpg/40 km/gallon.

I'm getting 415 km per completely filled tank which I believe is 257.8 miles per tank. (17.7 miles / gallon).

Help.

 

[Canadian Bear]

I did some math today, my car should be getting 25 mpg/40 km/gallon.

I'm getting 415 km per completely filled tank which I believe is 257.8 miles per tank. (17.7 miles / gallon).

Help.

Well, try a few different ideas. Change the air filter, try sea foam, be a little less heavy on the accelerator, etc. Troubleshoot, as much as possible, until you find the right combination.

 

[matrix21]

I did some math today, my car should be getting 25 mpg/40 km/gallon.

I'm getting 415 km per completely filled tank which I believe is 257.8 miles per tank. (17.7 miles / gallon).

Help.

Seafoam is the key....well at least it's a start.

 

[mazda protege 2]

your injectors could be cloged as well, cause more flow of gas, sea foam is a start, maby your air box is clogged somewhere, i use injector cleaner every other tank (all kinds are the same to me) and it got atleast 70 kms more to a tank, and helped the throtle response, post back with detals, good luck!

 

[Sharki]

it seems like we all are getting poor gas mileage! i have a 03 Protege, with 87,000km runing on dealer oil and filter. last week i put a short ram intake in, and it eats gas like CRAZY! in 2 days i'm almost at half, i'm running out of ideas on what else i could do to get better gas mileage. i dont know if i should get the dealer to clear the injectors they call it a (major emission servies) they said it should be done around 70,000KM what do you guys think? have any of you ever got this emission serves?

 

[mazda protege 2]

i have never gotten an emission service, i just run lucas oil injector cleaner every other tank, it seems to work, with it i get about 650 to a tank (being light on the pedal that is!)

 

[FSCatalyst]

it seems like we all are getting poor gas mileage! i have a 03 Protege, with 87,000km runing on dealer oil and filter. last week i put a short ram intake in, and it eats gas like CRAZY! in 2 days i'm almost at half, i'm running out of ideas on what else i could do to get better gas mileage. i dont know if i should get the dealer to clear the injectors they call it a (major emission servies) they said it should be done around 70,000KM what do you guys think? have any of you ever got this emission serves?

Sorry dude. Adding a SRI does not make your vehicle consume MORE fuel. Maybe you just like the deep sound it makes so you have a heavy foot. Hehe.

 

[Sharki]

I love "speed" i like driving fast!! i think all of us do. i just noticed a drop in fuel with a sri vs my K&N drop in filter. i drive about the same and i lose more with the sri. its it a good idea to add fuel injector cleans every time i put gas? well not every time, maybe evey 3rd time...

 

[Azaizai]

dont forget to limit your mpg a lil bit for cold weather. I saw a lil drop in mine due to the fact I like letting the car warm up first (paranoid about the whopping 3 qts of oil circulating poorly). We've also been getting high winds as well, which makes the car work a lil harder for the same speed.

 

[yashooa]

When my O2 took a poo my milage tanked. It did not throw a CEL for a while even though now I realize the O2 was acting up before the CEL.
I could clear the CEL and drive for a day or two before it came back on even though obviously the O2 was bad. It seemed to run normally for a while but it got increasingly worse as time wore on.
If you do have a bad O2 get it from o2sensor.com. DAYUM the stores wanted 270-293.00$ for a new one with the connector. I got one from o2sensor.com for $99.00 (connector included) with free shipping and it came in in two days. Runs great too.

I normally get 400-440 miles or so out of 12 gallons. I drive about 104 miles per day. All of my mods: bigger turbo, FMIC, Injen, MPI, J&S etc. don't affect my milage provided that I don't smash the throttle too much. Funny thing is my milage improved some after it was retuned with the MPI.

 

[yashooa]

I seem to be getting poot gas mileage lately.
I have a stock 2001 protege LX 2.0. 15" winter tires on now, 30lb pressure.
It has about 130,000 (80,700 miles) km on it.

I just had a new timing belt done and my plugs were checked by Mazda and seem fine to them. The issue was before I got my timing belt done.

I filled my tank full and my light just came on after 415km of driving, mostly highway. That's 257 miles according to my calculator. That sounds really bad, what's average?

edit: Just read the part about your belt.
Hmm I wonder if they got your belt a tooth off when they reinstalled it? The timing being off could be a real issue even by a small amount.