long time to crank
 

After not running for several weeks, my Yamaha 90 hp 2 cycle needs to
crank for a seriously long time before she catches and begins to
start. I believe (but am not sure) that the reason is that my fuel
hose is about 15' long and even though I squeeze the primer bulb, all
this does is compress air and pushes fuel near the fuel pump. Somehow
fuel takes a lot of cranking to reach the fuel pump. If I run her a
lot, I do not have this problem. Thoughts?

long time to crank
 

wrote in message
...
After not running for several weeks, my Yamaha 90 hp 2 cycle needs to
crank for a seriously long time before she catches and begins to
start. I believe (but am not sure) that the reason is that my fuel
hose is about 15' long and even though I squeeze the primer bulb, all
this does is compress air and pushes fuel near the fuel pump. Somehow
fuel takes a lot of cranking to reach the fuel pump. If I run her a
lot, I do not have this problem. Thoughts?

The primer bulb should get "hard" after squeezing a few times. Liquid gas
won't compress. Air will.
If the bulb is hard, you have purged any air out of the lines.

Eisboch

long time to crank
 

On Aug 8, 10:30 pm, wrote:
After not running for several weeks, my Yamaha 90 hp 2 cycle needs to
crank for a seriously long time before she catches and begins to
start. I believe (but am not sure) that the reason is that my fuel
hose is about 15' long and even though I squeeze the primer bulb, all
this does is compress air and pushes fuel near the fuel pump. Somehow
fuel takes a lot of cranking to reach the fuel pump. If I run her a
lot, I do not have this problem. Thoughts?

i don't really know, but you could have a defective fuel pump that's
"bleeding off", then not pumping fuel sufficiently to the carbs. or
seeing that a two strike runs via crankcase vacuum, it's possible that
there is a crank seal that's seeping slightly and not allowing
sufficient vacuum to happen until it starts.

When I was a kid, my dad had an old Lawn Boy mower, and it had good
rings, but the crank seal at on the blade end was wallered out a
little. you could pull your guts out and never get it started. My dad
got used to starting it by putting a socket on the topside crankshaft
and using an electric impact for a "pony motor."

You pulled the rope to get it swinging and hit the impact at the same
time to keep it spinning. pretty soon, you'd hear the engine start to
spark and sputter, till it finally ran on it's own. and when it
started thee socket would sling itself across the garage floor. It was
the most powerless thing going, but if you shut it off and went to
refuel it, it would then start first pull.

Just thought I'd pass that along.,

long time to crank