df50 (2004) problem

[zacive]

df 50 with 200hrs with problem... when start and work easy , but to 1200rpm-850rpm a lot of time stop work.
the service has be in 150hrs
only in slow rpm i have problem.
what can i look?

[boats.net]

Needs to connected to computer diagnostic to test idle control valve and other sensors.

[zacive]

for iac valve i thing and i, but and hot is the same problem.there how everything is ok (in low prm) hot or cold stop to work...

[boats.net]

You still need to have the computer diagnostic test completed

[zacive]

if i clean with carb spray and put again on , must zeroed from software?
or i can to work ?(with the same iac, no other)
maybe must going in suzuki dealer service...because (i think) have and more fuel.
with fishboat 5m and 320kgr boat(with engine , fuel , me , up to 600kgr) i have 1 l/m in rpm 4000-6000 with 14prop and max rpm 6200(6400 with 12prop)
or its ok the fuel?
thanks