$10 of gas gets me 50 miles?
#1
Where did my 7 go?
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$10 of gas gets me 50 miles?
Just picked up an '86 GXL the other day, and it seems that I put in $10 of gas (~3.8 gallons) and after 45-50 miles its almost down on E again! This has been twice now. What could possibly be wrong? Running super rich somehow? My modified 12a gets 20-22 mpg, I thought this would at least get 20. Thanks for ANY tips/help. Btw.. how low does the gauge have to get before its actually EMPTY?
Matt
Matt
#3
Where did my 7 go?
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This is mostly highway miles btw... yes new plugs, wires, the whole works. Could it be the fuel filter or injectors? Car has a newer engine (60k miles) so everything should be working correctly.
#5
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Originally Posted by Mschafe
Btw.. how low does the gauge have to get before its actually EMPTY?
Matt
Matt
thats something you should never find out.... the crap that floats on top of the gas is not good for the motor.
i act like 1/4 tank is "E"... running out of gas is silly.
#6
Needs more Displacement.
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FC's are known to run rich, but damn avg of 8mpg drop, thats pushing it, get ur injectors cleaned. also mess with your air/fuel ratio screw thing (next to the vacuum sensor) and see if it needs adjusting.
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#8
Where did my 7 go?
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Thanks for the tips.. I wouldn't mind messing with the A/F screw, but I don't want to make it any worse, and i'll definetly get the oxygen sensor replaced.
#10
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i get somewhere between 50-60miles to a quarter tank off 10-12$....but i have bigger injectors and its a 88 GXL 2+2.... i get like 200 to 220 to a full tank....disgusting.... lol
#11
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Originally Posted by MattMan002
i get somewhere between 50-60miles to a quarter tank off 10-12$....but i have bigger injectors and its a 88 GXL 2+2.... i get like 200 to 220 to a full tank....disgusting.... lol
#13
my 87 large street port TII conversion gets about 80 miles to 3/4 tank, wtf? I think I need to do some serious tuning to squeeze out every mpg. plus maybe my driving habits are killing gas mileage too, keep it out of boost as often as possible and refrain from wasting gas by boosting past ricey *** hondas who rev at you
#15
Rest In Peace Dave
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I at one point got about 27mpg in my n/a, that was good stuff, freeway trip though, even rodding it around town i got 17. When i turboed that block all hell broke loose and so did my wallet
#16
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on my 90 gxl (bone stock) I get 26 mpg nearly always with my tires being at 28 lb (bumpy detroit roads), all hwy, at 70 mph, 400 miles a week.
we have a lots of threads of mpg problems and "possible solutions" but noone every posts followups and spell out exactly what worked for them.
we have a lots of threads of mpg problems and "possible solutions" but noone every posts followups and spell out exactly what worked for them.
#17
I'll be boosting soon!!
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for a while i only got 120 miles to the FULL tank!!! then i replaced the shitty o2 sensor, and bam, literaly twice the mileage...... . besides they're cheap, i got mine for $45, bosch, direct replacement.
and with todays gas prices, i need all the mileage i can get. it takes $50+ to fill my tank .
and with todays gas prices, i need all the mileage i can get. it takes $50+ to fill my tank .
Last edited by ROTORLUTIONIST; 09-13-05 at 12:02 AM.
#18
90RXHeaven
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wow. 26 is very impressive. On hwy driving i get 20 and sometimes, depending on the weather and temp, it may drop to 17 or 18 around town. I should prolly have my injectors cleaned and maybe put in a new fuel filter. It couldn't hurt right. One thing i did notice is that for extended periods, drafting really works. Find a fast SUV or a 18wheel rig and get within a few carlengths behind it and set your cruise. You could be saving 3 or so more miles to the gallon.
BTW, what is the size of our fuel tanks?
BTW, what is the size of our fuel tanks?
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