always got somethin smart to say. did i complain about my gas usage? no. did i say i didnt want to drive a truck? no. i simply asked how much everyone was gettin. yes i do have a CEL light on, and in the area where im from there are no hills so i shouldnt get 7 miles to the gallon. even in a dodge 2500 i shouldnt be gettin this ****ty gas mileage. thats why i wanted the input. but of course, you as usual take it to the next level.

thank you to everyone else who responded the white man way.

 

why does it matter? bottom line is a 2500 weighs more than other peoples 1500, you cant deny that.
more weight = less MPG.

 

just got back from driving back and forth across half the state. mix of 2 lanes and interstate. OD off when below about 50 or 55. interstate speed moderate at 55-70. 356 miles on 22.2 gal = 15.9 mpg. not too bad.

 

I can get 350 miles out of my 26 gallon tank if I run it almost dry, but I usually fill it up between 250 and 300 (about 300 is where my low fuel light usually kicks on)

 

see thats why im worried somethins goin on to drastically affect my mpg because im gettin 200-250 km a tank. thats like 135 ish miles. not good....

 

Which is it? 300miles/tank or 135miles/tank.

I apologize for the fuel usage comment. It's a common topic that pops up here and fact is that these trucks just don't get good fuel milage. You didn't mention that you had a CEL, just that you thought you had a misfire. It's very very easy to tell if you have a misfire, especially if you would have mentioned the CEL. Decreased milage to a tank is the last thing you ought to notice. Good luck finding the problem.

 

it depends... sometimes the truck is more thirsty somedays than others. i dont differ in throttle, its the same all the time. i expect to burn a ton of gas, just not this much. im havin a feelin my fuel pump is on the verge of goin out so maybe this is why... who knows.

 

i did the math and i usally get about 340 miles to tank on my 35 gallon tank but i dont run it dry, now dry tank i may get 400 usual driving

 

Yeah dude, something's definetly wrong. I mean "realistic truck gas mileage" is one thing. 4 miles to a gallon is not even in the ball park though, unless you're running60 inch tractortires on3 feet of lift and the truck is supercharged with a 7.13 gear ration... which it would apear you are not.

Did you notice your exhaust pipe heating up rediculously (like it might be glowing orange underneath the truck) In one of my old vehicles the coil cracked and it caused fuel to just dump down my exhaust manifold. You could definetly tell something was wrong with it though.

If you don't notice it running any differently, then don't underestimate that it could be something quite simple and small, like a fuel line leak. You'd probably have noticed a hole in the tank by now. I don't know if the pump donking out would really make it do that or not. The last fuel pump I had just quit on me one day with no sign or warning, no whining no nothing, truck just wouldn't start one day.

 

Motorbreath, I just don't like wasting time or money.

Example 1: You and your misfire.

If I thought I had a flat tire, I would ask people how I can figure this out (if I was that stupid). I wouldn't ask people what they are getting for mileage to tank to compare if my inconsistencies supported my idea about a flat tire. Instead of running multiple tanks of fuel through my truck when it is clearly a) not running right and b) definitely has a problem that I can narrow down, I would like to find the most efficient way to trouble shoot to save me money, time, effort, and tons of problems.

Same to you. If you thought that you had a misfire, ask us about a misfire. Not about mileage to a tank. When you take your vehicle to a dealer or mechanic and ask about a misfire, do you think the first trouble shooting step would be to drive it for hundreds of miles to determine the fuel usage and compare this with what it should be getting, or do you think that they would check the ignition system?

Example 2: Making an air filter out of a 1984 Cadillac intake

Why would you even bother. Engineers designed the factory intake. Leave it. Or if you want to change it, go buy the correct after market FIPK.

I'm sorry to offend you MB. I just like to do things correctly. I'm not one to cobble or try to figure out the hardest way to get from point A to point B. I mean, if you have fun doing things the long hard way, rock on!