gas mileage?

stumpjumper · 05-10-2006, 09:49 PM

Damn good advise mrnickleye.

To clean that screen you speak of one would have to remove and take apart the gas tank?

mrnickleye · 05-10-2006, 11:16 PM

^^^ You need to pull the fuel pump. The filter/screen, is attached to the inlet side of pump. You must remove the gas tank to get at the pump. Its such a big job, that I would replace the pump while I was there.

My pump is original on my '89, and still working fine.

I recommend using an injector cleaner in the tank every 10 or so fill-ups. (6 months). Techron is one of the best YOU can buy (I get proffesional stuff for the shop). They sell it at walmart, and chevron gas stations. Its in the gas at chevron and texaco.

stumpjumper · 05-11-2006, 03:19 AM

Thanks for info.

What is this proffesional injector cleaner you speak of?
What do you think about B12 Chemtool?

Isphius · 05-11-2006, 04:36 AM

"400-450kms a tank. Now with my fixed HG, I get about 350kms a tank..."

that is 240-270 miles a tank, and then 210 miles a tank...and if the tank is really 18 gallons, that sucks ass. thats 13-15 and 11. something. My monte carlo which was a carbed 350 got better than that when i didnt race anyone.

kewlcoconut · 05-11-2006, 07:27 AM

yea i drive my car hard sometimes. no wonder i have so many problems haha.

the original MPG for the supra

MPG (city)----------17

MPG (highway)------23
MPG (combined)-----19

I while back, I converted all that into KM's, and if my calculations are right, i should be getting about 400kms per tank....I dont know if I am right...so I think I am in the normal range...My car is weird haha....before and after HG kms, lol.

Kai · 05-11-2006, 11:03 AM

Sounds like you're running on some very crappy fuel there - granted its cheaper - but what octane? I fill up with 95 octane and get 375miles on a tank with careful driving, or 99 octane and get an extra 20 miles or so out of it. This is the Research Octane Number, not the Engine Octane (which i think you use in the US)

kewlcoconut · 05-12-2006, 01:56 AM

i usually run 91 octane. i cant afford to get anything higher at the moment. gas prices are crazy in canada right now. where i live, in vancouver BC, it just hit about $1.25 a litre....i remember when i first got my car, it was like 60cents a litre and that was considered high......pfffft. haha.

mrnickleye · 05-12-2006, 05:26 AM

Quote:

Originally Posted by stumpjumper

Thanks for info.

What is this proffesional injector cleaner you speak of?
What do you think about B12 Chemtool?

I've heard some good things about B12. I used it years ago to clean carbs with.

At the shop we use BG products for all the fluid services, with machines.

http://www.bgprod.com/products/fuelair.html

One called MI3000 (now CF5) is 4x stronger than what you can buy at parts house. Its for maintaining the system, put in tank about every 10-20 fillups. We sell it for $10 a can.

For the air intake and injector service, 44K is 10x stronger, and used when a dirty system is a problem.

Isphius · 05-12-2006, 12:09 PM

When I first got my licesnse (im only 19, BTW) Gas was under 1.50 here in NJ. Now its over $3. Back then, with my 83 olds cutlass with at least 50 hp, I could get 5$ worth, and drive around ALL day. Now 5$ will get me to the mall and back. Haha. I totalled it up today, I got 10$ of gas from below E at $3.02(3.3 something gallons), and I drove 74 miles And now its below the E line. This is driving in grandma mode(under 2k rpms, not a lot of throttle). So these cars can be good. Oh that averages to 22.4 mpg.

stumpjumper · 05-12-2006, 05:10 PM

Thanks mrnickleye. Good info.

I feel my fuel system is pretty dirty so I will be looking into getting some of this.

05-10-2006, 11:16 PM	#2
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	Keeping the fuel system clean really helps ^^^ You need to pull the fuel pump. The filter/screen, is attached to the inlet side of pump. You must remove the gas tank to get at the pump. Its such a big job, that I would replace the pump while I was there. My pump is original on my '89, and still working fine. I recommend using an injector cleaner in the tank every 10 or so fill-ups. (6 months). Techron is one of the best YOU can buy (I get proffesional stuff for the shop). They sell it at walmart, and chevron gas stations. Its in the gas at chevron and texaco. __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.

05-11-2006, 04:36 AM	#4
Isphius 500whp yet? Join Date: Nov 2005 Location: Long branch, NJ Posts: 1,006	"400-450kms a tank. Now with my fixed HG, I get about 350kms a tank..." that is 240-270 miles a tank, and then 210 miles a tank...and if the tank is really 18 gallons, that sucks ass. thats 13-15 and 11. something. My monte carlo which was a carbed 350 got better than that when i didnt race anyone. __________________ Yay the supra assistant is gone!!! WEEE!!

05-11-2006, 11:03 AM	#6
Kai 3" Exhaust Join Date: Mar 2006 Location: London Posts: 69	Sounds like you're running on some very crappy fuel there - granted its cheaper - but what octane? I fill up with 95 octane and get 375miles on a tank with careful driving, or 99 octane and get an extra 20 miles or so out of it. This is the Research Octane Number, not the Engine Octane (which i think you use in the US) __________________

05-12-2006, 12:09 PM	#9
Isphius 500whp yet? Join Date: Nov 2005 Location: Long branch, NJ Posts: 1,006	When I first got my licesnse (im only 19, BTW) Gas was under 1.50 here in NJ. Now its over $3. Back then, with my 83 olds cutlass with at least 50 hp, I could get 5$ worth, and drive around ALL day. Now 5$ will get me to the mall and back. Haha. I totalled it up today, I got 10$ of gas from below E at $3.02(3.3 something gallons), and I drove 74 miles And now its below the E line. This is driving in grandma mode(under 2k rpms, not a lot of throttle). So these cars can be good. Oh that averages to 22.4 mpg. __________________ Yay the supra assistant is gone!!! WEEE!!

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05-10-2006, 09:49 PM	#1
stumpjumper 3" Exhaust Join Date: Dec 2005 Posts: 74	Damn good advise mrnickleye. To clean that screen you speak of one would have to remove and take apart the gas tank?

05-11-2006, 03:19 AM	#3
stumpjumper 3" Exhaust Join Date: Dec 2005 Posts: 74	Thanks for info. What is this proffesional injector cleaner you speak of? What do you think about B12 Chemtool?

05-11-2006, 07:27 AM	#5
kewlcoconut 3" Exhaust Join Date: Sep 2005 Location: Vancouver, BC Canada Posts: 157	yea i drive my car hard sometimes. no wonder i have so many problems haha. the original MPG for the supra MPG (city)----------17 MPG (highway)------23 MPG (combined)-----19 I while back, I converted all that into KM's, and if my calculations are right, i should be getting about 400kms per tank....I dont know if I am right...so I think I am in the normal range...My car is weird haha....before and after HG kms, lol.

05-12-2006, 01:56 AM	#7
kewlcoconut 3" Exhaust Join Date: Sep 2005 Location: Vancouver, BC Canada Posts: 157	i usually run 91 octane. i cant afford to get anything higher at the moment. gas prices are crazy in canada right now. where i live, in vancouver BC, it just hit about $1.25 a litre....i remember when i first got my car, it was like 60cents a litre and that was considered high......pfffft. haha.

05-12-2006, 05:10 PM	#10
stumpjumper 3" Exhaust Join Date: Dec 2005 Posts: 74	Thanks mrnickleye. Good info. I feel my fuel system is pretty dirty so I will be looking into getting some of this.