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BB9 High city fuel consumption

 
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Old 02-05-2015, 03:40 PM
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Icon5 BB9 High city fuel consumption

Hi,

Im new here, but I was lurking here since I bought my lude.
My issue is that no matter if I drive like a madman or I drive like Gerhard Plattner, my fuel economy in the city is still the same about 12l/100km or 19mpg.
Could it be the o2 sensor? My engine has only 120k miles on it and no smoke or any fishy sounds are present(BB9 2.0l f20a4).
Does anyone have run into the same issues?
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Old 02-05-2015, 06:10 PM
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Re: BB9 High city fuel consumption

19mpg city for an H22 wouldn't be unusual. Can't speak for your engine though.
If you get 19mpg (don't know how to convert that lol) highway running 60-65mph (105-110km/hr) then that would be unusual.

Check your exhaust outlets for soot build up indicating rich fuel/air mixture. And if you haven't already do the air filter, plugs, wires, cap, rotor and pcv..yes the pcv too.
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Last edited by bykfixer; 02-05-2015 at 06:15 PM.
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Old 02-05-2015, 06:35 PM
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Re: BB9 High city fuel consumption

Yes its not that unusual to have that fuel economy, but shouldn't it matter if you change your driving style to grandma? I will check everything and try different driving styles again.
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Old 02-06-2015, 10:50 AM
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Re: BB9 High city fuel consumption

Honda's rates the lude at 20mpg so your not way too off. After I put 93 octane in my lude. My fuel gas meter has gained some speed. My lude has about 148k miles. Check your spark plugs, Distributor Rotor and contacts, EGR (try cleaning it). I need to do these things but haven't gotten the time yet. Try not to rev your engine too much. This obliviously makes a difference. I am still new to driving stick but I'm getting better. You should be getting a'lil better mileage than that. What gas are you putting in your prelude?



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Old 02-06-2015, 01:41 PM
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Re: BB9 High city fuel consumption

Im using standard 95 octane not premium 98/100 and I am usually gentle on the gas, I rarely rev it beyond 2500rpm.
Tomorrow I will have a little time and I will check what you guys recommended.
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Old 02-06-2015, 02:14 PM
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Re: BB9 High city fuel consumption

Try changing gears between say 2500-3500... Then going from say 1st to 2nd you are propelled a little better when entering the next gear.

Ima 3000-4000 shifter with my H motor. Shifting at 2000-2500 makes you have to press harder on the accelerator to reach the next shift point. So unless you have red lights every 100 yards (91 m) you'll quite likely get a little better fuel mileage. But city driving is a ton of stop/go/stop/go, so your mileage is going to be lousy compared to steady speed of a highway.
Example, my truck gets 32 highway, and anywhere from 18 to as low as 14 in the city...all that shifting, idling, going good only to slow back down...
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Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead
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Old 02-06-2015, 10:16 PM
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Re: BB9 High city fuel consumption

Just curious, what is your altitude? Honestly I wouldnt know the answer to thatbif someone asked me but I thought it would be strange to ask where you live, I would just goole the altitude then.

I know that at higher altitudes they sell lower octane fuels duebto the lower air density, I guess it would work the opposite way for low altitudes, just never heard of pump gas with that high octane. Or maybe it is just a conversion thing? Between metric and standard? I know octane is octane, theres no metric or standard octane, but im just taking a stab at.
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Old 02-08-2015, 08:51 AM
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Re: BB9 High city fuel consumption

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Originally Posted by lukegreen View Post
Just curious, what is your altitude? Honestly I wouldnt know the answer to thatbif someone asked me but I thought it would be strange to ask where you live, I would just goole the altitude then.

I know that at higher altitudes they sell lower octane fuels duebto the lower air density, I guess it would work the opposite way for low altitudes, just never heard of pump gas with that high octane. Or maybe it is just a conversion thing? Between metric and standard? I know octane is octane, theres no metric or standard octane, but im just taking a stab at.
I live in Budapest Hungary, altitude ~50-70m above sea level. Whole europe has 95-100 octane gas so its not exactly a rare thing here. Altough the price of gas(5$+/gallon) is pretty extreme compared to us prices...
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