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Old 04-20-2009, 04:17 AM
5-7HEAVEN 5-7HEAVEN is offline
Motorized Bicycle Elite Member
Join Date: Aug 2008
Posts: 1,912
Default Re: Please Help. Rear Engine Is Stumbling.

Bob. Mike, both engines share the same large automobile fuel filter. It is transparent; when I prime the fuel lines I can see the air bubbles flow through the filter and into the Happy Time reserve tank. If it was defective both engines would have high-speed stumbling.

I just replaced both sparkplugs. Since I use the bike every day there is always fresh gas in the tanks.
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