1987 Evinrude 40 horse 2 stroke tiller motor

Rich Mabrey

Recruit
Joined
Aug 9, 2016
Messages
1
This spring I installed new reed valves and blocks, rebuilt carbs and replaced fuel pump. It was running great for 2 months and now it will idle fine and troll fine but I can't get top speed out of it. I am having trouble with getting boat up on plane. Full throttle it runs steady and kicks up big wake but won't go fast and plane out unless I cover top carb with hand and cut air off about 1/2 to 2/3, then it goes fast like it's supposed to. Timing is correct at high end and low end. I took carbs of and cleaned again but no help. Any suggestions?
 

flyingscott

Fleet Admiral
Joined
Apr 8, 2014
Messages
7,985
Re-check the carbs and the fuel pump sounds like something is blocked.
 
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