devildog78brat Posted December 12, 2008 Share Posted December 12, 2008 i have a 78 brat and everyone else on here says there getting 30-35 mpg out of theirs and i feel like mines going just as fast as my dodge with a 360ci and 35" mud terrains. i filled it up about 2 days ago and i've done nothing but drive to school and back twice = 8 miles total and to autozone witch is right next door to my school once. so a total of ruffly 10 miles and now im on just about a half tank. what the hell! haha. could if just need a tune up or could it be a carb malfunction? Quote Link to comment Share on other sites More sharing options...
subiemech85 Posted December 12, 2008 Share Posted December 12, 2008 bad fuel guage or stuck shut choke Quote Link to comment Share on other sites More sharing options...
86HatchShelby Posted December 12, 2008 Share Posted December 12, 2008 Properly inflated tires? Dirty carb? Dirty fuel filters? Random oddities that decrease aerodynamics? -Jaren Quote Link to comment Share on other sites More sharing options...
nipper Posted December 12, 2008 Share Posted December 12, 2008 when you get to E fill it up and let us know how much gas it takes, untill then we can't really have an answer. If you were actually getting 0.25 miles to the gallon you would have thick black soot, or the smell of gasoline right before the car catches fire from a gas leak. nipper Quote Link to comment Share on other sites More sharing options...
devildog78brat Posted December 12, 2008 Author Share Posted December 12, 2008 i have the right tire pressure for my tires but not for the car. should i switch that? and i dont think my choke is engaging when its cold cause in the mornings i have to like manual choke it ha and keep on the gas till its warm enough to run by its self? and idk exactly how much right now but from about an 8th of a tank its costs 15 bucks flat to fill. and my rear main seal is leaking and im waiting for my gasket to come in. but would that effect it at all? Quote Link to comment Share on other sites More sharing options...
nipper Posted December 12, 2008 Share Posted December 12, 2008 You may have a rotted gas tank. Tire pressure is fine. Maybe the choak is stuck on. I mean this is increddibly poor gas mileage for any car. You must be driving to and from school in first gear at 40 mph.. nipper Quote Link to comment Share on other sites More sharing options...
devildog78brat Posted December 12, 2008 Author Share Posted December 12, 2008 You may have a rotted gas tank. Tire pressure is fine. Maybe the choak is stuck on. I mean this is increddibly poor gas mileage for any car. You must be driving to and from school in first gear at 40 mph.. nipper i hope not! yeah my first gear goes to about 20 or 25 ha so thats not it. i think (and hope) its the choke. can you just replace the choke and should there be a spring on it cause i didnt see any springs going to the the choke. theres just a thing that looks like a throttle and it spins back and forth just like a throttle but it spins freely. i thought that was pretty weird Quote Link to comment Share on other sites More sharing options...
subiemech85 Posted December 12, 2008 Share Posted December 12, 2008 i hope not! yeah my first gear goes to about 20 or 25 ha so thats not it. i think (and hope) its the choke. can you just replace the choke and should there be a spring on it cause i didnt see any springs going to the the choke. theres just a thing that looks like a throttle and it spins back and forth just like a throttle but it spins freely. i thought that was pretty weird therein lies your answer the thermochoke crap broke you can wire it open choke is not necessary at 14*f, may just need to pump it a few times at most, usually just turn the key and presto!! idle @ 600 rpm atleast that's the way it works for me Quote Link to comment Share on other sites More sharing options...
nipper Posted December 12, 2008 Share Posted December 12, 2008 i hope not! yeah my first gear goes to about 20 or 25 ha so thats not it. i think (and hope) its the choke. can you just replace the choke and should there be a spring on it cause i didnt see any springs going to the the choke. theres just a thing that looks like a throttle and it spins back and forth just like a throttle but it spins freely. i thought that was pretty weird Yup and easy enough to fix. nipper Quote Link to comment Share on other sites More sharing options...
Skip Posted December 13, 2008 Share Posted December 13, 2008 The choke plate should move freely when the engine is warm. The return spring is rather weak and is located inside the choke housing. When cold, the bi-metal choke operating "spring" should make it more difficult to move. This carb should have two vacuum pull off diaphragms to open the choke once the engine starts. They are located to the pass side rear of the carb. If I post a picture of your carb with these items annotated would it help? Having you use the correct nomenclature may help diagnose your problem. It would also be of value to someone trying to help you repair it. Another thought that crossed my feeble mind is The fuel level in the bowl is too high or the needle and seat or float is knackered. Thus while running it is constantly leaking gas into the intake manifold/engine. Quote Link to comment Share on other sites More sharing options...
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