300zx

Hey all, I got a question for you!!!! How much gas are you guys useing ? I got a 84 gsl with 75,000km org. motor and the car is in mint shape all around. The car idles like a champ when you just sitting there you cant even tell the car is running.

But the other day i put $40cdn in the tank which filled it and i only got like 258kms out of it!!!! wtf??? Like i dont think my gas gauge is working right because i doesnt seem to move right for the amount of gas thats in it. but thats all the gas she would take.

If this is the case what can i do to get better gas milage??? My 2nd gen does way better and its modded!! The the first gen is bone stock!! I was think about puting a bigger carb on her because in 2nd gear she will run out of gas in i try to rev it too like 6-6500!! But if that gas is like this i wouldnt want to see what a bigger carb would be like.

Yesterday i was driving home after after picking my friend up from the army base and the car started to shake and i was like what the **** it can be out of gas and then i tryed to take off from the light and it staled. i got it started and drove her into the gas station and put $10 in her and the shake stopped and drove home fine!!

What can i do to fix this problem ?

300zx

anyone ?

cdrad51

I'm doing about 12 mpg. Meh.

nipper

Change your gas filter and gut or remove the catalytic converter. Your car should rev higher in 2nd gear.Over the years I have owned no fewer than 10 1st generation RX-7s and removed or had all the cats gutted and believe me the performance shows a marked improvement.
There are gas filters [wee ones] located at the banjo bolt going into the carburetor, clean them[2] as well.
I think the main inline gas filter located near the rear mounted electric fuel pump on your car is probably your problem but I recommended the above so you will have most the bases covered.

YapaKanichi

I get about 10mpg....on good days

RotorMotorDriver

iTrader: (1)

Yeah, the gas mileage in a first gen isnt the best...By far. Although, it sounds like you have some fuel delivery problems as well if its having trouble revving like that. Replace the ful filter for a cheap easy start, its good maintenece anyway. Take it from there after you see what its doing.

~T.J.

IanS

iTrader: (4)

I dont know why everyone is having this huge gas mileage problem. I get an average of 22mpg and I dont really granny it around either. granted, alot of it is highway but still. Mine is street ported with emissions removed, RB SP exhaust, ebay muffler. I also have dlidfis, but that only increased my mileage by 1 or 2.

chachee

I get about 13 in the city and 20 on the highway. Wish it was better.

Mr_Rx7_Au

I use about 12 litres per 100km. Go figure that out with ya MPG

lovintha7

I get about 20 or so with not-so-conservative driving, mostly highway tho.

GavinJuice

oh ya silly yanks

oldskoolrx-7

yeah it sucks i get about 12 MPG here in hawaii, and if i ever go on the highway it usually is traffic so it sucks ***...but if i drive conservatvely i can maybe get 15-16 MPG if im lucky, and sucks too i pay 2.25 a gallon for regular gas...

jays83gsl

Well, the only time I drove my car any real distance, I went through a half a tank in 19 miles

There were horrible details to that, though

ch0g0nda

What about working an EFI system onto a 12a... I know FI generally yeilds better fuel mileage than a carb will.

Bob Holton

My 85 GS bone stock gets 28 mpg normally, and if I keep around 2000 rpm I can do better. But then along comes a ricer nd it all goes to hell ! but I grin lots. The local cop wont drag me any more. Durn !

300zx

Yeah i was drivin her hard for abit then i fulled her up to see how long she would go with nice driving. She seems to be eat abit to much gas. I am going to look into a few things this weekend and i get back to you on how it goes. thx

wickyc

hmm...I have a stock engine and carb om my 83. I have headers and a coffee can muffler, and the converter had been knocked around a bit, and I get around 25-26 mpg. I drive 25 miles to my college and it usually takes 2 gallons round trip.