30 HP Merc 4 stroke problems

riverrattoo

Recruit
Joined
Oct 2, 2007
Messages
3
Bought the above engine new in 2003 and it ran well untill july of last year

Suddenly engine started breaking down at about 30 % throttle - If I pushed the throttle to 80 % , it smoothed out but the rpms reved up and down somewhat - Sat at the local Merc repair shop till end of Oct when the Merc tech rep extended the warente and replaced all three carbs - Boat went back in the water this spring , ran ok for about 10 hours and reverted back to the original problem - back to the same repair facility - said it was contaminated fuel (fresh this spring ) and $580 later carbs were cleaned and tank replaced - One month and about 10 hours later same problem - Had other issues this summer and just pulled the boat - Any thoughts ? or should I just hang lemons on it and tow it around our very active boating area
 

JUSTINTIME

Captain
Joined
Sep 2, 2006
Messages
3,284
Re: 30 HP Merc 4 stroke problems

sounds like you need to find a new shop with up-to-date certified techs
 

riverrattoo

Recruit
Joined
Oct 2, 2007
Messages
3
Re: 30 HP Merc 4 stroke problems

Normally I would agree but I've been using these guys for 15 years and other then being pricy no problems
Interesting that Merc admitted that the throttle shaft was bipassing air and it was a known problem
Thanks for the reply - Think I will try another shop before I make an anchor out of it
Should have stayed with 2 stroke
 
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