Vbb hard start
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1981 p200e
Joined: 20 Nov 2005
Posts: 18
Location: kelowna british columbia
Fri Sep 06, 2019 2:32 pm quote
My friend has a 60’s vbb with a 150 motor in it. Has 8” wheels and a four speed. Problem is we cannot get it to start with the kick. It is almost like the flywheel only gets around once each time you kick it. The kick start lever seems to be the proper one but it doesn’t seem to have enough oomph to get her to start. She starts great pushing it and it runs good and strong. I would have no problem push starting it every time bus my friend is not able to push start it often. Any ideas? Could it just be something as easy as weak spark?
Hooked
59" Allstate
Joined: 03 Aug 2018
Posts: 184
Location: TC Florida
Fri Sep 06, 2019 3:08 pm quote
How does the clutch feel ? If the cable is on the tight side it could be keeping the clutch from full engaging. Do you notice clutch chatter when taking off from a dead stop or slippage under hard acceleration ?
Member
1981 p200e
Joined: 20 Nov 2005
Posts: 18
Location: kelowna british columbia
Fri Sep 06, 2019 4:12 pm quote
The clutch is performing as it should. No slipping or chatter. The flywheel turns immediately when you kick itover but it doesn’t seem to get enough momentum to start
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'64 Motovespa 150S (177) , '64 V90
Joined: 27 Mar 2013
Posts: 570
Location: S.Salem, NY
Sat Sep 07, 2019 6:25 am quote
I just checked a VBB and one stroke of the kick 'pedal' equals one and one half revolutions of the flywheel so it's not really going to spin it around much working against any real compression. Good compression, a good plug, correct timing, a strong spark, and proper jetting should combine to fire it off even on one revolution.
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