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1Back to top Go down   Fuel consumption question Empty Fuel consumption question Wed Jul 11, 2012 10:32 am

John The Hat

John The Hat
active member
active member
This has probably covered before but the search has not helped. The fuel consumption on my '89 K100RS seems a bit high. I am seeing about 46 MPG, admittedly on a lot of short trips. New air filter, new fuel filter. Any suggestions would be recievede with gratitude as they say.


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If you don't like the sound a K bike makes... You are not riding it right Smile 
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2Back to top Go down   Fuel consumption question Empty Re: Fuel consumption question Wed Jul 11, 2012 10:50 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
My '87 K100RS regularly returns 5 litres per 100 kilometres (20 kms per litre), and always has in a combo of urban, rural and touring riding over a full tank of premium 98 octane fuel. There are engine mods done, however. Others I've ridden with get 22 or 23 kms per litre.

Doing the maths to work out a five quart gallon produces a headache this early in the morning. But approximately 4.55 litres for an imperial gallon and travelling the distance you state suggests that your bike is chewing the juice a bit more than is 'usual'.

Tyre pressure, right hand twist percentage (giving it the stick?), uphill with a headwind, idling in city traffic, low compression, ignition timing, valve clearances, & etc, are things I'd consider having a squiz at.


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1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-P  - Beemers owned still or sold.

~We all believe what we want to believe in - Rob Dickinson
    

3Back to top Go down   Fuel consumption question Empty Re: Fuel consumption question Wed Jul 11, 2012 10:02 pm

RicK G

RicK G
admin
admin
I wouldn't be too concerned with that considering the short trips round town.
I used 98 octane as anything less was a waste as consumption increased markedly I usually got 50 - 52 MPG using 98 and I live in a country area where the shortest ride is 12k into town.
46 isn't bad enough that I would go looking for a problem but a general tune up and check it on a long ride over a full tank and just keep an eye on it for getting worse.


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"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

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