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2004 Seadoo challenger 2000

2K views 2 replies 2 participants last post by  rulesoferick 
#1 ·
My jet boat has a 240 hp Mercury efi and runs great until you push it past 3,500 stalls out. If you go 3,500 rpm to 6,000 runs perfect then try to back down stalls right out but starts right back up?
So 3,500-5,999 is a no go any ideas?
 
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