1979 Yamaha Enticer 340 hard starting...need help !

[s***@peoplepc.com]

The ignition is strong, but when cold, it doesn't get adequate fuel to
the carb. Once I loosen the fuel line at the carb, crank engine, it
starts ! What am I missing....thanks in advance !

[vilulf]

is your fuel tank vent plugged partially or completely?
or perhaps the fuel pump isn't operating at 100% capacity?
or, maybe a restricted fuel return line?
** just a few things to check.


( sounds like something is creating negative pressure [vacuum] in your fuel
delivery line to the carb )

John

Post by s***@peoplepc.com
The ignition is strong, but when cold, it doesn't get adequate fuel to
the carb. Once I loosen the fuel line at the carb, crank engine, it
starts ! What am I missing....thanks in advance !

[s***@peoplepc.com]

Post by vilulf
is your fuel tank vent plugged partially or completely?
or perhaps the fuel pump isn't operating at 100% capacity?
or, maybe a restricted fuel return line?
** just a few things to check.
( sounds like something is creating negative pressure [vacuum] in your fuel
delivery line to the carb )
John

Post by s***@peoplepc.com
The ignition is strong, but when cold, it doesn't get adequate fuel to
the carb. Once I loosen the fuel line at the carb, crank engine, it
starts ! What am I missing....thanks in advance !

Thanks for your help. the machine starts every time now, just cranks
longer than what I had expected as the machine is new to me. I've
been told it has a fuel enrichener instead of a choke and perhaps it
needs adjustment--any idea how to do that?