2005 Johnson 2 stroke 90 HP Stall when throttling up in gear

Bronx68

Seaman Apprentice
Joined
May 16, 2007
Messages
47
Engines starts fine and idles fine. When I rev up the engine in driveway on hose it is fine. Problem occurs on water when in gear and try to throttle up. It then stalls out. It will start up fine and idle fine but stalls when idling up in gear. Gas is from last year and I'm not sure how long since gas filter has been changed since I just acquired the boat. Could this be old gas problem or fuel filter? The gas was treated with stabilizer and Starbrite gas treatment.
 

JWhit

Petty Officer 2nd Class
Joined
Mar 29, 2010
Messages
130
Re: 2005 Johnson 2 stroke 90 HP Stall when throttling up in gear

may be a fuel filter, but i think that is often a carb problem. rebuilding fixed my 1989 as it would die almost every time i put it in gear. now shifts and stays running
 

AlTn

Commander
Joined
Mar 9, 2010
Messages
2,813
Re: 2005 Johnson 2 stroke 90 HP Stall when throttling up in gear

I'd try changing the filter and using new gas first...looks to be a fuel injected engine with EMM..requiring cables, software to diagnose
 
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