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Post by kz1000st on May 28, 2021 15:42:18 GMT -6
Go to www.modernvespa.com They can help you best with this. It sounds like a ground wire came undone or a dead battery. |
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Post by kz1000st on May 24, 2021 19:59:20 GMT -6
Fuel, air, spark. Also check that the kill switch is not turned off.
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Post by kz1000st on May 9, 2021 17:23:02 GMT -6
Given your location in Florida and your BV-350 your best bet would go to www.modernvespa.comThey have many members in Florida and probably direct you to a Club. |
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Post by kz1000st on Apr 21, 2021 14:49:51 GMT -6
Look for a vacuum leak. Letting go of the throttle is a pretty good sign that air/fuel is being upset by something. Either a vacuum line or intake manifold is leaking.
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Post by kz1000st on Apr 16, 2021 17:18:42 GMT -6
Somewhere there is a short circuit. Look for a wire that has its insulator rubbed through and shorting to ground.
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Post by kz1000st on Apr 16, 2021 17:12:00 GMT -6
The only help you will ever get with most China scoots is engine manuals. There are several GY6 manuals listed here.
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Post by kz1000st on Apr 16, 2021 17:06:11 GMT -6
Look for an open circuit somewhere. I had a wire rub through to the point that only a few strands were carrying power. It shows up as low lights and other non functional equipment.
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Post by kz1000st on Apr 1, 2021 12:03:33 GMT -6
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Post by kz1000st on Mar 27, 2021 18:59:08 GMT -6
It could be a balky CDI but are you sure the kill switch is on and functioning?
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Post by kz1000st on Feb 25, 2021 16:15:25 GMT -6
When you start it and it's idling listen and see if you hear a hissing noise. It still sounds like a vacuum leak. Maybe a cracked intake manifold or something in the emissions system is letting air in.
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Post by kz1000st on Feb 25, 2021 16:10:33 GMT -6
Bolts in a blender is bad. Check the compression. It almost sounds like either broken valve springs or a dropped valve.
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Post by kz1000st on Feb 21, 2021 11:10:48 GMT -6
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Post by kz1000st on Feb 18, 2021 20:37:45 GMT -6
My best guess is you have a vacuum leak in a hose. Check the fuel pump line from the carburetor to the pump. Also the intake manifold. If it has a crack in it your mixture runs lean.
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BSA Back?
by: kz1000st - Feb 17, 2021 18:56:22 GMT -6
via mobile
Post by kz1000st on Feb 17, 2021 18:56:22 GMT -6
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Post by kz1000st on Feb 4, 2021 22:10:59 GMT -6
I would review the carb situation. A 50cc GY6 has an 18mm carb while the 150 carb is 24mm. The engine could be struggling breathing through the larger orifice.It sounds like vacuum issue and you discovering the original carb could be an indicator. Trace the vacuum lines you have to see if they are damaged or disconnected.All you are describing sounds like a vacuum leak.
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