mercury 140 fuel problems

D

Dandelion wine

Recruit
Joined
Sep 22, 2004
Messages
3
Just purchased 16.5 foot Grew ski boat with 140 mercruiser. The boat starts fine and runs in neutral great but once engaged in gear the boat will not rev past 2000 rpm. The boat has new plugs, fuel pump and fuel lines.Any help would be great.
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: mercury 140 fuel problems

Water in the carb and/or fuel filter?
 
H

Hog Wild

Seaman Apprentice
Joined
Aug 29, 2004
Messages
40
Re: mercury 140 fuel problems

First make sure your carb. is actually opening all the way up. Sounds to me like it's just not getting enough air. With the engine off, put the throttle at WOT. Then look in the carb. is it WOT? Are you saying the boat runs fine but just doesn't go over 2000 rpms? If it runs fine do you have the right prop? I just really isn't possible to run fine and have no power really? Wondering if it's missing on a couple cylinders too?
 
D

Dandelion wine

Recruit
Joined
Sep 22, 2004
Messages
3
Re: mercury 140 fuel problems

Thanks for the reply's my boat will rev to the moon in neutral but when you put it in gear it does not go over 2000 rpm. Any takers?
 
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