extra thirsty tb42s

[roundy]

i have a 89 gq shorty with an auto and carbied tb42s and yes i know they are thirsty little numbers but i'm lucky to get 250kms out of a tank... any ideas??? should i get the carbie rebuilt??

thank you

[bogged]

Have you had a tune and service done recently?

Have you done anything?
Filters? timing?

[roundy]

yeh new plugs and points. timing checked

[nellyb1]

i got an 88 man.
They are thristy as, but i've fixed mine a little so far to be geting 16. which is about as good as its going to get i think.

Oils, plugs, rotor, leads

then do you timing

then reset your valves.

I gave the carby a good clean out, and played around with the mixture screw. Its in between two vacum hoses at the bottom right of the carby, wind it back a bit man. Chances are it was like mine and was running way too rich.

give it a go mate.

[mr_wonderful]

gday mate
had the exact same problem with mine only getting about 300ks to a 90litre tank
got a tune and got tappets done, fixed it right up
cheers
p.s wouldnt hurt checking dizzy cap, points, condeser, leads, plugs & coil

[roundy]

thanks guys i'll have a look at these few things

[rascal75]

I used to have a 5sp manual TB42 shorty on 33s.
It would use about 35l/100km with normal driving...


After switching to elec ignition, fitting extractors & 2 1/4" exhaust, and then getting it tuned it ended up being 18l/100km for same driving...

Highly recommend the same path..

[chops]

I was told to invest in some spiral core ignition leads, and an adjustable low pressure fuel pressure regulator to help lean it right out

[NutterGQ]

I was told to invest in some spiral core ignition leads, and an adjustable low pressure fuel pressure regulator to help lean it right out

Spiral core leads are great especially on gas cars but wont be the fix your looking for. Also on a carby car you don't lean it by removing its fuel supply, that's askin for a whole range of issues.