My Gas Mileage....Is there a Problem? any suggestions would be greatly appreciated
#1
My Gas Mileage....Is there a Problem? any suggestions would be greatly appreciated
hey everyone..well really quick what size tank do we have on our G35's? is it 16 or 18? I thought it was 16 but after talking to an infiniti tech today on the phone he mentioned 18..he then stated that you should technically in our Coupes only get 250-280 miles on a stock G on a full tank gas..my thought when he said this was.....when I fill up my car normally when I'm on E (empty)...I usually put about 15 1/2 to 16 gallons into the car..I thought that was normal until he told me this today.
with that being said I have seen alot of post about people stating the fuel sending unit can sometimes go bad or the 2 tier leveling system in the tank could be acting up which causes the Fuel Gauge to either read lower then what it should...or when you fill up it sometimes doesn't hit FULL like it says it is.
I took a pic on the way to work today to show my mileage and where my fuel gauge is sitting...I have listed the mods below that I have that could maybe hurt my gas mileage...I didn't see them as really hurting the car though. My car is going into Infiniti On Saturday for an oil change and I was curious if I should have them check out some other things while its in there based on this....
The sad thing is that right now I am getting worse gas mileage being NA then I was when I was Supercharged...I do not have an aftermarket ECU. I drive the car normally with sometimes increased acceleration but not enough to justify my max tank of gas being 230 Miles.
list of mods:
Intake:
MD plenum spacer 1/2
ARC intake
Exhaust:
HKS Exhaust
Kinetix 300-Cell HFC's
Transmission:
GTM Valve body Upgrade
Other Miscellaneous:
20-Inch Rims
Tien Coilovers
Koyo Radiator with Aftermarket Fans
Samco Hoses
Here is the pic: when this was taken about 5 mins earlier my gas gauge was on E with the light on..when I stopped the gas gauge went up..
with that being said I have seen alot of post about people stating the fuel sending unit can sometimes go bad or the 2 tier leveling system in the tank could be acting up which causes the Fuel Gauge to either read lower then what it should...or when you fill up it sometimes doesn't hit FULL like it says it is.
I took a pic on the way to work today to show my mileage and where my fuel gauge is sitting...I have listed the mods below that I have that could maybe hurt my gas mileage...I didn't see them as really hurting the car though. My car is going into Infiniti On Saturday for an oil change and I was curious if I should have them check out some other things while its in there based on this....
The sad thing is that right now I am getting worse gas mileage being NA then I was when I was Supercharged...I do not have an aftermarket ECU. I drive the car normally with sometimes increased acceleration but not enough to justify my max tank of gas being 230 Miles.
list of mods:
Intake:
MD plenum spacer 1/2
ARC intake
Exhaust:
HKS Exhaust
Kinetix 300-Cell HFC's
Transmission:
GTM Valve body Upgrade
Other Miscellaneous:
20-Inch Rims
Tien Coilovers
Koyo Radiator with Aftermarket Fans
Samco Hoses
Here is the pic: when this was taken about 5 mins earlier my gas gauge was on E with the light on..when I stopped the gas gauge went up..
![](http://i86.photobucket.com/albums/k119/cmblack13/gasmileage.jpg)
#2
#5
Originally Posted by vhtran
I would answer this , but scroll down or do the search. There are 2 people having the same question. You can get your answer in there.
Originally Posted by uf20wop
i'm usually at 20-21 MPG per tank
#7
Originally Posted by Mike@RiversideInfiniti
You guys need to ease up on that gas pedal.
The tank is 20 gallons.
The tank is 20 gallons.
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Originally Posted by g35man04
yes I have already posted up in that thread but wanted to get some insight into my own thread so that I know what to tell the tech when I go up there on Saturday. I know what the search function does and I know how to use it. Thanks for posting.
what is the average mileage you make on a tank though...320-340 miles? I am curious as to what size tank we have..I am sure its 16 but wanted to make sure from some others.
what is the average mileage you make on a tank though...320-340 miles? I am curious as to what size tank we have..I am sure its 16 but wanted to make sure from some others.
i always calculate my MPG though, usually right around 20.8, no matter how i drive
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might want to get some tune up stuff done to get better mileage as well...all assuming you havent done them yet
-spark plugs (is that a 50k thing??)
-throttle body cleaning
-fuel injector cleaning additive
-some spirited driving gets any carbon buildup out of everything usually
-...my mind is blank ive been studying all night
---my gas mileage went up from 7 to 10 on my lifted 1993 Jeep GC ZJ when i did all the stuff above and some more
...im a total post ***** right now since i havent slept in 2 days
-spark plugs (is that a 50k thing??)
-throttle body cleaning
-fuel injector cleaning additive
-some spirited driving gets any carbon buildup out of everything usually
-...my mind is blank ive been studying all night
---my gas mileage went up from 7 to 10 on my lifted 1993 Jeep GC ZJ when i did all the stuff above and some more
...im a total post ***** right now since i havent slept in 2 days
#15
thats what I talked to my tech about....I have a new engine in the car after I blew my first one...I picked it up from a salvage yeard with 38k on it...I now have 42k on my car.
I asked him if I should change out the Spark Plugs, Fuel injectors etc...I have my OEM set of injectors from my old engine sitting in the garage. I also just got a new throttle body put on that I had polished so that should be an issue.
I was thinking of upgrading the plugs in the car, putting in some fuel injector cleaner...I am having the oil change on Saturday. They are going to run an Ohm test on my car to see if my fuel sending unit is drawing enough current.
I asked him if I should change out the Spark Plugs, Fuel injectors etc...I have my OEM set of injectors from my old engine sitting in the garage. I also just got a new throttle body put on that I had polished so that should be an issue.
I was thinking of upgrading the plugs in the car, putting in some fuel injector cleaner...I am having the oil change on Saturday. They are going to run an Ohm test on my car to see if my fuel sending unit is drawing enough current.