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H. L. Chauvin · 05-20-2013, 10:46 PM

On a long trip, if carburetor is clean, sounds like fuel is well filtered from the fire wall sediment bowl to carburetor; however, also on a long trip it is possible that some deleterious material of some sort is in the gas tank, (such as rust or crud), that may possibly be collecting around the gas tank drain & impeding the flow of gas through gas shut off valve to the sediment bowl.

Are there a few more gas related details of what helped to get home; e.g., opened GAV valve, pulled choke slightly to provide more fuel?

If altering gas mixture helped, appears fuel related.

If fuel adjustments did not help & were left alone, & engine got better on its own, possible electrical problem, & more often corrosion on connections as Dave stated in above reply #2.

More of one's trip's mechanical details always lead to more meaningful help on what to check.

05-20-2013, 10:46 PM	#3
H. L. Chauvin Senior Member Join Date: May 2010 Posts: 4,179	Re: Loss of power 7 back fire On a long trip, if carburetor is clean, sounds like fuel is well filtered from the fire wall sediment bowl to carburetor; however, also on a long trip it is possible that some deleterious material of some sort is in the gas tank, (such as rust or crud), that may possibly be collecting around the gas tank drain & impeding the flow of gas through gas shut off valve to the sediment bowl. Are there a few more gas related details of what helped to get home; e.g., opened GAV valve, pulled choke slightly to provide more fuel? If altering gas mixture helped, appears fuel related. If fuel adjustments did not help & were left alone, & engine got better on its own, possible electrical problem, & more often corrosion on connections as Dave stated in above reply #2. More of one's trip's mechanical details always lead to more meaningful help on what to check.