Fuel Consumptions TB42 GQ

[hellmatic]

HI guys, just a quick question, why is the GQ TB42 carby use half a tank to travel about 100kms but if u tow a trailer like car trailer or van loaded it uses 1/4 of the tank? is there somthing different in the tune side, or a module somewhere altering the system, or the mechanically way its built, ive searched and found nothing about it, so thought id ask you guys here thanks have a great and safe day

[mudnut]

Sounds a bit back to front, but check your fuel pump pressure and filter or fuel lines for a restriction. I've seen heavy fuel usage in my EFI falcon when the filter was nearly blocked.

[hellmatic]

i would thought that also matey, checked them, and everything is fine with no missfires,backfire,slugish on power or anything, its just uses more fuel without towing somthing heavy, and i can never figure it out, and its the same way on my dads Nissan Navara D22 1997 QD32 Duel Cab

[MB]

Bananas Speak “Matey”


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[MB]

How’s About using your hidden Knowledge to potentially Help out a Young Bloke/Lass in Time to come here Brother……’EGO CAN be a dirty SkyHook’


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[hellmatic]

hahah thanks everyone, just thought to try and understand why this happens, could there be somthing in the tuning of the engine, or the way the carby is or even a module placed somewhere that alters somthing, or even the timing of the engine, that makes it perform better at a certain degree angle under load, that makes it more efficient when pulling

[MB]

DO Tell Old Mate


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[mudnut]

Maybe check the vacuum advance diaphragm. If it has a hole or small tear, it might only be doing half a job.

[BrazilianY60]

Maybe check the vacuum advance diaphragm. If it has a hole or small tear, it might only be doing half a job.

Nice catch Mudnut. This makes sense as an engine with less of an advance surelly burns fuel worse than a properly advanced one. If for whatever reason the vacuum advance is working under heavy load but not at light load, that could be it.

[MB]

My Deepest Apologies @hellmatic Mate I must’ve had my Tin-Foil hat on again


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