1993 Yamaha sterndrive engine issues

jdittl

Recruit
Joined
Jun 18, 2015
Messages
1
I have two issues with engine 1- when under power if you press the trim button the engines bogs down electrically 2- when accelerating above 3200 rpm's the engine starts to backfire. the carb has been rebuilt, the distributor cap. rotor and plugs have been changed and i have check electrical connections with no change - nayone have any ideas? was wondering if it is the control module in the distributor?
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,513
Ayuh,.... Welcome Aboard,.... #1 sounds like Bad/ Corroded Grounds,.....

#2 still sounds like a lack of fuel,.... Tank, fuel pump, carb,.....
 

Capt Ken

Commander
Joined
Jul 30, 2002
Messages
2,269
Early on Yamaha had a problem with that and I believe it was due to faulty ground on alternator.
 
Top