BMW K bikes (Bricks)


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1Back to top Go down   Cold starting Empty Cold starting Tue Apr 19, 2016 3:50 pm

riddle the sphinx

riddle the sphinx
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hey guys,

When I bought my bike the PO showed me how to start the bike, "full choke and run it till you get to the end of the road and its fine". Sure enough, from cold the only way the bike will start is with full choke, if you shut it down to half or off the bike will cut out, it needs a good 2 min run before you can shut it down. I've been caught out by shutting it down early and the bike cutting out at the next junction. I was led to believe by the PO that this is normal for a bike of this age.... but I have a niggle. 

Does this sound like a temp sensor issue? what do you guys think?
I've had the plugs out and they look bomber. When the bikes warm, no issues but is like this every time from cold start. 

Cheers
Brett


__________________________________________________
'88 naked K100RT
    

2Back to top Go down   Cold starting Empty Re: Cold starting Tue Apr 19, 2016 4:09 pm

92KK 84WW Olaf

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Either 'choke' or part throttle. The 'choke' print is simply because BMW took the same part from their carb engine bikes where it did actually control a choke.. On the K it actually gives it a part throttle.

Sounds ok to me. I have to use it or else give some throttle but as I live on a hill I let it off immediately as its only on over run down the hill.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

3Back to top Go down   Cold starting Empty Re: Cold starting Tue Apr 19, 2016 4:12 pm

riddle the sphinx

riddle the sphinx
active member
active member
ok, so there is no actual 'choke' then. so nothing to worry about? no further investigation needed?

Happy days, one less thing to worry about.


__________________________________________________
'88 naked K100RT
    

4Back to top Go down   Cold starting Empty Re: Cold starting Tue Apr 19, 2016 4:17 pm

92KK 84WW Olaf

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Life time member
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Just make sure your plugs are good and gaps are correct, but in truth the K seems very tolerant and forgiving.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

5Back to top Go down   Cold starting Empty Re: Cold starting Tue Apr 19, 2016 4:26 pm

riddle the sphinx

riddle the sphinx
active member
active member
the ones in it / that came with it are good, I have a new set to go in with the service kit.


__________________________________________________
'88 naked K100RT
    

6Back to top Go down   Cold starting Empty Re: Cold starting Tue Apr 19, 2016 4:38 pm

92KK 84WW Olaf

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Life time member
Life time member
There are other threads about rubbers and crank case breather/vent but if its ticking over ok after warming up that would suggest a lot is good.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

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