motor problem

sparkie22

Recruit
Joined
Jun 13, 2013
Messages
1
l have 90 HP inline 6 mercury. The problem I having is low speed running in gear and idle, but what weird run good when you first put the in boat in water run good ,but After about 30 minute start running bad idle,low speed running in gear.I had the carb rebuilt, change spark plug and fuel line any help
 
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