yes i know its a v-8 and they do go through gas quick but i fill up my car everyday and recently have been taking it real easy on it "no more then quarter throttle" and i still find my self at the gas station filling up everyday is their anything that could be causing poor gas milage rich carb, vacume leak maybe someone with a vacume diagram on my motor, maybe the intake i put on, bad plug wires ????
please throw me some ideas or personal experiences cuz its really starting to hurt my wallet

 

I'm having this problem too, filling up every couple of days though, it is definitely hard on the wallet. Advice appreciated here also.

 

All I would have to say is make sure all sensors are working properly, and do a tuneup on the engine. New Plugs/Wires/Cap/Rotor etc..

 

or just dont drive it everyday

 

I don't know what kind of engine the original poster has, but as for the 305 TPI.... how many miles do you get on a tank?

 

My setup from the signature with a non LU converter I get around 17-18mpg around town.

TPIs get a lot better, there's one person on these boards, I forget his name gets 30mpg.
It's all in how well tuned and efficient your motor can be.

 

My 85 got around 18mpg around town. Do a regular tune up and make sure everything is running properly.

 

I just got the car so I haven't checked the mileage or anything yet.

 

Ok, just checking. I can't remember exactly what my gas mileage works out to be, but know that I get 250+ miles from a tank on everyday driving. All hwy gets about 320 miles. Of course, neither one uses the whole volume of the tank. This is usually on about 13 gallons.

Ok, I got a calculator...
approx 20mpg city
approx 25mpg hwy

This is an 87 TPI 305 w/5 speed

 

could my poor gas milage be because of the different weather conditions encountered each day sence im carb

 

I really should check. I'm kinda stuck at school right now though so I'll have to get back to it. It does seem to do a lot better once you drive it in overdrive more often and don't gun it constantly, lol

I am in the process of replacing my fuel filter though so I'm hoping that will help. It's being a pain though, couldn't get the #$%@! thing off last night, and I don't wanna break my fuel lines...

 

Speedfreaker,
You might run a search to see what some of the carb guys are getting for mpg. I know on my 84 (non computer carb'd 350 w/5 speed) I used all kinds of gas. 12 mpg if I remember right.

FyreLance,
Yeah, taking it easy makes a huge difference. Hope the fuel filter replacement goes ok. I don't really have much that'll help you with it. Are the fittings corroded or just tight? Other than that, new plugs, wires, cap/rotor and things will help you too. Oh yeah, I got a big improvement by resetting my timing to spec and fixing a high idle condition that I had.

 

Yes. :-)
I was gonna play with the timing but it seems that the distro cap is very hard to get to.. right up at the rear of the compartment where the hood meets the compartment, where there isn't much clearance...

 

To adjust the timing, you'll need a timing light and either a distributor wrench ($30 i think), a wrench bent at an angle, or a crow foot wrench set. I use the crow foot wrench on the end of a wobble extension on my ratchet. Figured I didn't have an extra wrench to bend to reach the hold down bolt so since I had to buy something I'd get a set of crows feet (correct terminology?) for thirty something bucks.