HELP!
I have spark, compression check of 95 lb. each cylinder, plugs are dry.
Cranking the engine ( water inlet closed ) does not fill the fuel filter, does not fill the fuel pump sediment bowl or pass through the "U" tube feed to the carb.
So far I have: rebuilt the mechanical fuel pump, disassembled my 3 year old MM carb (bowl was empty), installed a new fuel filter, removed all fuel line connections and blown air through them ( With a hand pump I pumped air into the fuel tank line to check for blockage of the pick up tube then set the pump in suction mode and attempted to draw fuel from the tank... I did get fuel but it didn't run out of the disconnected line. ) With a gravity feed mounting should fuel simply run out of the disconnected fuel line (to the lower mounted filter)? Cranking the engine did not fill the SIERRA water separator filter with fuel ( This is a filter model I have been using for years ).
Any fuel collected so far ( I even drew a sample from the bottom of the fuel tank ) has been clear of any sediment or clouding.
I have a metal fuel tank, I was wondering if there is a mesh screen on the pick up tube that is obstructed with build up as a result of the ethanol factor. This 39 year old boat is stored with a full tank plus Sta-Bil for Winter layup, this is the first time in all these years I have encountered this problem.
I welcome any input, I have exhausted my limited knowledge.
I have spark, compression check of 95 lb. each cylinder, plugs are dry.
Cranking the engine ( water inlet closed ) does not fill the fuel filter, does not fill the fuel pump sediment bowl or pass through the "U" tube feed to the carb.
So far I have: rebuilt the mechanical fuel pump, disassembled my 3 year old MM carb (bowl was empty), installed a new fuel filter, removed all fuel line connections and blown air through them ( With a hand pump I pumped air into the fuel tank line to check for blockage of the pick up tube then set the pump in suction mode and attempted to draw fuel from the tank... I did get fuel but it didn't run out of the disconnected line. ) With a gravity feed mounting should fuel simply run out of the disconnected fuel line (to the lower mounted filter)? Cranking the engine did not fill the SIERRA water separator filter with fuel ( This is a filter model I have been using for years ).
Any fuel collected so far ( I even drew a sample from the bottom of the fuel tank ) has been clear of any sediment or clouding.
I have a metal fuel tank, I was wondering if there is a mesh screen on the pick up tube that is obstructed with build up as a result of the ethanol factor. This 39 year old boat is stored with a full tank plus Sta-Bil for Winter layup, this is the first time in all these years I have encountered this problem.
I welcome any input, I have exhausted my limited knowledge.
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