1 1983 K100 wont start on choke anymore and runs rough Fri Sep 07, 2018 5:35 pm
wilbo
Silver member
Hi guys and gals, my restored 1983 K100 has sadly started playing up. I was riding home from work when I noticed that everytime I slowed down for a junction or a roundabout when I went to accellerate away the bike was hesitant and felt like it was missing. I thought nothing of it until I went to start it today and I went through my normal starting sequance, choke to 100%, always fires after about 3seconds on first press but today it didnt.
I then tried about 10 times and nothing was happening so I tried without choke and it almost fired each time as engine was started but then stalled, I kept trying without choke and it was almost catching and after about 10attempts it did but I was having to be very gentle with the throttle so I held it running and then started to increase the revs and it sounded fine. I threw my leg over bike set off and it immediatly felt like it had no power and was what I would describe on an old carb bike as bogging down and almost missfiring so I went round the block and returned it home.
I have just been out into the garage and it is almost exactly the same, wont fire with choke but trying to fire up without. I checked my spark plugs and all look the same, I can here the fuel pump running also before and after pressing button so before I look at major surgery has anyone had anything similar? I did quite a through restoration on this bike even all the injectors were proffessionally overhauled.
Thanks in advance
I then tried about 10 times and nothing was happening so I tried without choke and it almost fired each time as engine was started but then stalled, I kept trying without choke and it was almost catching and after about 10attempts it did but I was having to be very gentle with the throttle so I held it running and then started to increase the revs and it sounded fine. I threw my leg over bike set off and it immediatly felt like it had no power and was what I would describe on an old carb bike as bogging down and almost missfiring so I went round the block and returned it home.
I have just been out into the garage and it is almost exactly the same, wont fire with choke but trying to fire up without. I checked my spark plugs and all look the same, I can here the fuel pump running also before and after pressing button so before I look at major surgery has anyone had anything similar? I did quite a through restoration on this bike even all the injectors were proffessionally overhauled.
Thanks in advance
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Current Stable
1983 BMW K100
1996 BMW R100RT
2009 Honda CBF1000
2003 Aprilia RS250
1996 Kawasaki GPZ500s
1955 James Colonel 225cc