Engine wont go over 3000 rpm underway

diskeditor

Member
Joined
Jul 23, 2006
RO Number
22494
Messages
1
I have twin 270 crusaders in a 1980 silverton 34'
The engines start and warm well but one motor when in neutral is fine....but underway it wont go over 3000 rpm....if you try and push the throttle it actually goes lower and almost wants to cough.....do you think this is a carburation problem or ignition?
any thoughts would be great
Thanks
 
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