Woohoo!!! Better gas mileage, FINALLY!!!

[cavaliers60]

I'm finally getting better gas mileage!!!!! :yahoo::yahoo:


Just got my spark plugs and wires changed the other day... Although I think we didn't do one right cause one is misfireing... :( But I'm getting a heck of a lot better gas mileage now!!!! got 110 miles after one quarter of a tank used... so I'm figuring about 400 or so miles per tank... which is like what about 25 mpg??? before the tune up, I wasn't even getting 20 mpg.. :(

[jackal2000]

congrats

its amazing what regular maintenance can achieve!

[cavaliers60]

I don't think the people who owned the car before me did anything... Those spark plugs were shot! I'm suprized I even got spark from them... Car runs a lot quieter now... that engine must have been working REALLY hard! I need to get that Misfireing one fixed... I think I know which one it is...

[pawzbear]

i wish i could say my car was running better =( he has been getting good gas mileage recently for some reason (not so damn cold anymore?) and today it all of a sudden lost oil pressure or something and started knocking really bad so i pulled over and had him towed in =((((
im not sure whats up with him but its probably major; my dad was in a shitty mood so i just handed over my keys and didnt ask him. =/

but uhm yeh.. im glad your car is going good..!

[billytheman1188]

I probably need to change my sparkplugs too.
My car gets about 210 on one tank of gas!

[cavaliers60]

I probably need to change my sparkplugs too.
My car gets about 210 on one tank of gas!

that's about what I was getting!!! Change those plugs and you'll be getting at least 200 per HALF a tank! :lol: I ended up having to change the wires too cause I kinda pulled the plug out of the rubber gromet... oops...:rolleyes2:

[billytheman1188]

I asked my step dad if changing the plugs would help my gas, he said it probably wouldnt. He said hes getting bad gas mpg too, its probably the weather.

Anybody know when sparkplugs should be changed? like at what miles..... cause i have 53,000 miles and ive never changed the plugs.

[cavaliers60]

I think you are suppose to do it every 30,000??? But trust me, it's not so much the weather.... It's really cold here too, and I'm getting much better gas mileage ever since I changed the spark plugs..

[jaybs02]

I guess I need to change mine as well I'm only getting about 20 MPG, and now that gas has decided to back up again ($2.69 today) it really is worth looking into.

"J"

[Freezman2]

I'm getting better gas mileage also after changing my spark plugs and wires....amazing what a small change can do for your car.

[cavaliers60]

too bad one of mine are misfiring.... grrrrrr

[whiteliquid]

Gm says the stock plugs last like 100,000 i think.

But i changed mine from stock at 40,000 to ngk iridium and just a couple days ago back to ac delco at 72,000

[Tempsho]

Anybody run just the copper Champion plugs in their cars (4cyl or 6cyl) with any better MPG results?

[sound_xtreme]

reset the computer, see if that helps.

[sound_xtreme]

Gm says the stock plugs last like 100,000 i think.

But i changed mine from stock at 40,000 to ngk iridium and just a couple days ago back to ac delco at 72,000

mine def didnt last that long. proly 80k i got misfires. i could fit the whole gap gauge in it with room to spare

[Cliff8928]

As long as the platinum doesn't fall off (most likely Sound_Xtreme's case) the plugs should last 100k. I've taken some originals out at 81,000 on my dad's old car and they still looked fine and the gap was OK.

[cavaliers60]

Anybody run just the copper Champion plugs in their cars (4cyl or 6cyl) with any better MPG results?

I'm not sure which ones I got. haha Got them from Autozone.... They are doing great!

[SweetNLow]

I'm not sure which ones I got. haha Got them from Autozone.... They are doing great!

people never stop amazing me.

so you replaced your plugs....... but you didnt even bother to ask what brand or what is best suited for your car.

and people wonder why their cars run like shit most of the time

[Branson]

i just changed my spark plugs to ac delco and i still get 200 miles to a full tank and im tryin to drive it easy to save on gas but i dosent seem to work very well. any one have any suggestions

[teflone]

sensors..

start with the easy ones.. MAF and any o2 sensor you can find..

they are cheap.. and somewhat DIY..



Then regular oil changes of course..

Oh.. and if you havent already checked.. Air filter.. could be right effed up.. leaves.. clean it good under filter, and replace it..

[SweetNLow]

ya after changing plugs your next best bet is to clean your MAF........ which can be done with a can of carb and choke cleaner. spary it inside and on the butterfly and get any carbon deposits off if it.

and if that doesnt help then you might wanna look into changing your O2 sensor....... and perhaps running some seafoam threw the fuel system and throttle body/upper intake as well

[cavaliers60]

people never stop amazing me.

so you replaced your plugs....... but you didnt even bother to ask what brand or what is best suited for your car.

and people wonder why their cars run like shit most of the time

My dad got them thank you... and I never bothered to remember the lable on the box..:Rage:

[Cliff8928]

i just changed my spark plugs to ac delco and i still get 200 miles to a full tank and im tryin to drive it easy to save on gas but i dosent seem to work very well. any one have any suggestions

You can also check the fuel pressure regulator by pulling the vacuum line off the end and making sure no fuel comes out. Sometimes they rupture and just put excess fuel into the engine that way.

[Seaaan]

Gm says the stock plugs last like 100,000 i think.

But i changed mine from stock at 40,000 to ngk iridium and just a couple days ago back to ac delco at 72,000

any noticeable difference between those two? i need new spark plugs and was thinking of just getting the iridium ones from autozone..:ninja:

[greenbastard]

too bad one of mine are misfiring.... grrrrrr

do you have the 2.4, 2.2, or 3400. on the 2.4's it's kind of hard to get the boots to line up on the plugs and some times they don't make contact. this happend to me and i just took the cover off and put it back on again. misfiring was gone. don't know about the 2.2 but the 3400 is totally different.

[jackal2000]

sensors..

start with the easy ones.. MAF and any o2 sensor you can find..

they are cheap.. and somewhat DIY..



i dont think $80 a piece is cheap

[Bullfish]

I know I was going from a car with a 3.0L DOHC V6 to a car with a 3.4L OHV V6, and from an 18 gallon tank to a 14 gallon tank, but I'm still stunned at how gas-hungry my car is.

I also think the gas gauge is funny, it'll hover around Full for a while, then drop to 1/2 tank in about 25 miles, hover there awhile, drop to 1/4 in 25 miles, hover there...I'm getting about 250-275 miles on a tank, I was going to ask if that's normal but from the posts here I guess it is.

Now I know why a "long range fuel tank" is offered as an option on some cars, I miss going 400 miles between fill-ups. I guess that's one of the trade-offs for having a car that's fun to drive. :)

[cavaliers60]

on the highway I got the 400 range... I'm not sure about city driving just yet... Should be a lot better though. :D What year is your car?

[cavaliers60]

do you have the 2.4, 2.2, or 3400. on the 2.4's it's kind of hard to get the boots to line up on the plugs and some times they don't make contact. this happend to me and i just took the cover off and put it back on again. misfiring was gone. don't know about the 2.2 but the 3400 is totally different.


I have the 3400... It's all fixed now (I hope). Cylinder 1 was misfireing... and ironically enough, it's the plug I snapped when checking all of them if they were in all the way.... oops... the other one that was misfireing, it was in wrong.. that's fixed.. Runs great now! So far the light hasn't come on again, so I think I'm good. :rolleyes2: but yeah, the 3400 series engine is a pain in the butt...