4-E MERCURY 60 4 STROKE 1C453840 & UP 4 CYL 2.3 BIGFOOT 2009 Model. Boogs Down Issue for 10 seconds then runs again.

[Robertse]

Hi Re MERCURY 60 4 STROKE 1C453840, when you travel 3000-4000rpms for about 5-10 minutes it boogs down for 20 seconds to a neutral state the operates normal again.

I have replaced the fuel lines, bulb, cleaned the VST, replaced fuel regulator , High Pressure Fuel Pump, the motor is not overheating there is no alarm triggered, also ideas will be appreciated.

 

[muc]

This can be a symptom of a stuck open thermostat. Check that the operating temp gets to 110-115°