forasteromx
New member
Hi new on this forum , have a 1999 135hp mercury optimax v6 , complete powerhead rebuild , new impeller , termosthat , clean popet valve, i am in the Engine settlement process, when i start the motor within 15 or 20 min at idle continius beep alarm sound , dealer say overheathing problem but have the impeller and thermostat new , quick silver oil sintetic blend 2 stroke oil use , anyone can help me