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Dominick
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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My 2006 90 hp 4 stroke Yamaha outboard will not idle below

Customer Question

my 2006 90 hp 4 stroke Yamaha outboard will not idle below 2500 rpm. History-10 years flawless service. recently it began idling rough and would some times stall at idle, but would run fine at higher throttle settings. Now it won't idle below 2500. The idle air solenoid was suspect and replaced. No change. Would appreciate any advise.
Submitted: 5 months ago.
Category: Boat
Expert:  Jason replied 5 months ago.

Hi Bart, my name is Jason.

Has the compression been tested, fuel pressure been tested or the engine hooked up to a scan tool yet?

Customer: replied 5 months ago.
all findings are good.
Expert:  Jason replied 5 months ago.

What was the compression and fuel pressure numbers?

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