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HAVE TO ASK THIS AGAIN .POWER FAILUR .HAD TO REBOOT. I HAVE…

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HAVE TO ASK THIS AGAIN...
HAVE TO ASK THIS AGAIN .POWER FAILUR .HAD TO REBOOT. I HAVE 1993 TAHAUTSU 9.9C BAD CORBON BUILD UP ON ONE CYLINDER EXHUST PORT .WHAT ARE THE CAUSES AND HOW DO I KNOW FOR SURE.
Submitted: 8 years ago.Category: Boat
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Answered in 30 minutes by:
6/20/2010
Marine Mechanic: Jeff G., Marine Mechanic replied 8 years ago
Jeff G.
Jeff G., Marine Mechanic
Category: Boat
Satisfied Customers: 4,730
Experience: 42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance
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Welcome,
I will be happy to assist you. If you have a question or need clarification please post back at any time.
Carbon build up can be caused by one or more of the following.
Too rich fuel/air mixture
Improper engine temperatures, too cool. Happens quite often in engines with the thermostat removed.
Poor quality fuel and/or oil. Use a good quality oil from a motor manufacturer brand. Cheap department store brands will cause accelerated carbon buildup.
Prolonged idling

Try leaning the idle down a bit. Use a good quality oil. Make sure the engine is fully warmed up and the thermostat is operating properly.
Jeff
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Customer reply replied 8 years ago
Relist: Inaccurate answer.
Marine Mechanic: Jeff G., Marine Mechanic replied 8 years ago
Could I respectfully XXXXX XXXXX this is an inaccurate answer?
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