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Discussion Starter · #1 ·
hey guys i know this thread has been done before but i'm getting really bad mileage and my gas money is eatin' into my money for modding. i'm only getting like 10 mpg! ::eek:uch:: anyways, i've heard the fuel filter could be the problem, any other suggestions? do i just take my car to an acura dealership to have them replace anything like that or can i do it? thanks a lot guys
 

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It could be a number of things:

- dirty fuel filter
- bad O2 sensor
- bad spark plugs
- dirty injectors
- old spark plug wires
- dirty air filter

These are all easy DIY fixes. But, I'd try a good fuel system cleaner before changing injectors.
 

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Discussion Starter · #3 ·
thanks, i dunno where to get a good fuel cleaning system thing, do they have one at any car store? any good brands to get? thanks
 

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Same problem...

All the sudden I am getting bad gas mileage too. I just had an oil change, washed my Weapon-R Dragon Filter, and JUST put in some STP fuel injector cleaner. So far I have only 104 miles on a half tank. I was getting at LEAST 240 miles per tank driving hard, and I am driving EASY on this tank... I was getting 240-300 per tank.

BTW: I heard that Chevron Techron was good for fuel injector cleaner, but I went to two different Chevrons where they both told me that it ONLY comes in the gas. I know this is B.S. because I have seen it in a Chevron before, but these guys were looking at me like I was crazy for wanting to buy Techron! :)

I am planning on getting some Denso plugs to see if that makes a difference. How often should I be changing my fuel filter? Can I do it myself? My dads volvo is EXTREMELY easy to change, but I'm not sure about changing it on a Legend...
 

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10 mpg is poor.

I suggest a major tune up and some BG 44K. If that s dosen't work I would bring it to a shop to diagnose. Fuel injectors and 02 sensors are not cheap fixes....
 

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Last time i checked 2 days back - 300 miles and I put in 13.3 gallons. I do drive hard at times. This is on my 91L

On my 94GS, I have noticed the mileage is much poorer. I do tend to turn off TCS sometimes, but I don;t think it helps much!
 

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Discussion Starter · #8 ·
well i just had my 90,000 mile check up and the gas mileage still sucks. so which kind of fuel system cleaner should i go with and can i just go to any auto store to get that? thanks
 

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I get anywhere from 110-130 miles on half a tank. It just bugs me out that my low fuel light usually come on when i have about 60 miles. I use Chevron Techron, but have not noticed any differences in gas mileage if thats what its suppose to help with.
 

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I personally like 104 Octane boster. It has chemicals in it that will clean your fuel injection system. Just make sure you get the right one. Most mechanics have a presurized fuel system cleaner. It is fat. It forces a cleaner through your system at high pressure. I have been told that aside from replacing most of the components this is the best way to go. My shop lost a fitting for theirs, so I havn't done it yet. I am happy to report that with my new fuel filter, air filter, NGK Platniums, and Mobil 1 ever 3k I have managed to go from 20 mpg to 23 mpg.
Later!
Lee
 

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You didn't list mileage nor when the last tune-up was peformed. As already mentioned, you first need to perform a tune-up. This include plugs, fuel filter, and air filter. The fuel filter can be changed in under 10 min. The HELM recommends a fuel filter change every 4/60,000. I usually change mine every 2/30,000, but recently I ran the fuel almost into E and changed it because I didn't want to take a chance on what sludge I might have picked up. Next, check for leaking injectors as well as any fuel line leaks. There are no Codes present (O2 and Injector failure should result in a code)? You could also take the vehicle to an emission testing facility to ID for ex. a restricted CAT. Your tire pressure is at spec? A/T fluid at spec? If the vehicle has approx. 100k miles, then I would have the top end cleaned. 3M sells a kit which uses an adapter to the fuel rail and the vehicle is run off the can until it stalls. If you use this, you should change your engine oil afterwards.

I buy Techron at WalMart.
 
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