mercury problem, please help

alffy2

Recruit
Joined
Aug 3, 2009
Messages
4
i have a 1999 25 hp 2 stroke mercury motor and ive had it for about 3 months now, when i got it it ran fine, but here lately i was fishing and i had the motor wide open and it began to bog down and now when i give it gas it goes dead and i can only idle with it, but i can tilt the motor out of the water and give it gas and it will do fine but when i tilt the motor back in the water it just goes dead when i give it gas. I can choke it when i give it gas and it runs maybe a couple of miles and hour faster but not much at all. any info would be helpful on whats wrong or what to do. thanks
 

macdaddy

Cadet
Joined
Dec 31, 2001
Messages
26
Re: mercury problem, please help

I would start with a spark test and then move on to fuel. If that all checks out good run a compresion test.
 
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