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50 hp that wont cooperate

kennyo

New member
"hello all, looking for a bit

"hello all, looking for a bit of help with my yamaha 50 autolube 50deto 6h5 l 514240. starts fine idles then after 15 secs or so goes bananas, loud squeak or sneeze. pulls down power and will either squeak or sneeze again or stall. removed all 3 carbs cleaned with carb cleaner/compressed air. refitted. compression test all 115 to 120, spark looks to be even to all 3. she will start straight away after stalling run again for 15 or so and do the same again. need help please...thanks in advance. kenny"
 
"hello all, thanks for your re

"hello all, thanks for your reply, i have adjusted the carbs out to 2 1/2 turns and maybe a small bit with it. she will idle now without the sneeze, but.. increase revs and she will at times but not as severe as earlier. can one carb cause this or do they all need to be out of sorts, do i need to concentrate on one carb at a time? any tips, your help is very much appreciated....thanks kenny."
 
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