Fuel consumption problem! Any info would help!

[speedyhonda]

Honda accord 90 ex consuming fuel like crazy, anyone got any ideas on what the reason for this is ? any info would help thanks.

[dj justice]

i have the same question. I have a 91 lx and i am only getting like 15 mpg.

[accordztech]

im getting 19.

check ur spark plugs pcv put some fuel injector cleaner.

spark plugs likley the cause.

but mine are all new so i am looking elsewhere....but you guy's may have better luck.

tune up time!

[mrhonda]

Yeah, if it hasn't had a recent tune-up, definately start there. oil change, PCV valve, fuel filter, dist cap, rotor, plugs (NGK), and wires.

[h22sparkle]

Yeah a tune up and oil change is in order from top to bottom. like timing ,sparkplugs ,sparkplug wires, fuel filter. Little shit like that.

[HondaFan81]

I'd also check your oxygen sensor. My thought is if it's bad it could cause the engine to run on the rich side for safety (prolly some failsafe mode...better to run rich than lean). This would also be affecting your performance I'd imagine. The other things mentioned by others above, I'd check regardless if you want maximum performance out of your engine. All should be in good condition even if you did not have noticeable probs.

Out of curiosity...What is the current mileage on your cars? (directed at two with fuel consumption probs).

[HondaFan81]

I would not think fuel injector cleaner is needed. If they were partially clogged, then how is excessive fuel being dispersed? I think because you're consuming too much fuel, the fuel system is most likely OK.

I think the problem lies either electronically or mechanically in the intake system (somewhere it's partially/fully clogged) OR in the emission system (partially/fully clogged somewhere or component damaged/failed).


If I stated something incorrect, please feel free to correct. This is all just my opinion.

[accordztech]

fuel gets dreaded with carbon build up. that build up can lead to partially clogged injectors. i do it just to be safe.

my mpg goes up if i dont put cleaner for a long time. its not just an injector cleaner, it cleans the fuel line, and fuel filter. that carbon build up in the head really takes a toll after a while, and untreated gas is basically a dark black color instead of a clearish color.

but i take out your spark plugs and inspect them.

check ur air filter as well.

[TDUBZ]

yea i would change the air filter because that improved my gas mileage.

[Blk EX Coupe]

so what kind of fuel injector cleaner do you guys recommend using? because I haven't really been getting that great gas mileage either. I know thats not the only thing to make my mpg better but i can only afford to do one thing at a time.

[Mista Juice]

this will solve all of your fuel problems..

[accordztech]

lol im coo...that stuff to me is a waste. in theroy it is sound though

well my milage is actually good. i read and stock milage is 21 city for the accord well thats not the se models or the 92 93 ex. and im getting about 19 mpg. so thats damn close. but its gone up to the SE accord i think since i did my manifold swap.

fuel injector cleaner: chevron or lucaus.

i use fuel cleaner every 3k about a tank before an oil change.

clean throttle body, IAC, etc.

[Boost_Lee]

I use the Sea Foam for injector cleaner. That stuff works great and i think you can add it in the oil if you have some left over.

[JailBa8]

Check O2 sensor i just changed mine damn what a difference in fuel consumption and of course spark plugs at the same time change distributor cap+rotor and wires while u're at it.

[TDUBZ]

does that tornado fuel saver really work?