1996 Merc 225 EFI hesitates when going up on plane, low idle rough and stalls

boatluv

Recruit
Joined
Jul 8, 2012
Messages
1
I have a merc 225 EFI, had the oil injectors replaced and plugs, runs worse. When coming out of no wake zone to go up on plane full throttle nothing happens for a few moments and then will struggle to get up on plane. Engine sounds rough when in the water-fine with the muffs on and will run for 30 min ++. Any ideas would be helpful.
 

Cricket Too

Lieutenant Commander
Joined
May 14, 2003
Messages
1,732
Re: 1996 Merc 225 EFI hesitates when going up on plane, low idle rough and stalls

Not sure what you mean by oil injectors as those don't exist, possibly fuel injectors??

Did you ever replace the VST filter? How is your fuel? Are you running a water separator, is the fuel treated? Ethanol wreaks havoc on VST's, you have to treat your fuel every single time you put fuel in.
 
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