Mercury outboard running rough – Cleaning the carbs – Troubleshooting Part 1

Mercury outboard running rough – Cleaning the carbs – Troubleshooting Part 1

Step 1 of getting my outboard motor running properly again. Troubleshooting and figuring out where the issues are.

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Brian Love says:

Hi Brett: I watched your wonderful videos and dove in to rebuilding my 3 carbs on my 2003 90hp Mercury. Rebuilding was easy. Now I cannot figure out how to get the bolts back in the bottom carb set. The top 2 carbs set on stationary bolts sticking out of the motor. the bottom carb is held on by removable bolts that wont clear the bottom cowling without going in at some ridiculous angle all while trying balance the front baffle system and a gasket on each side of the carb. Any experience or advice with this ???

JB JB says:

Hi Brett:

I have a similar engine, mine is a 2005 mercury 50 hp 2-stroke and i have similar problems with my engine. If you want to take a look at my channel, i posted a few videos showing what my engine is doing. Just running very boggy, example: I will pin the throttle and boat will not go faster then 10 mph.

I am testing to see if it might be the bulb or maybe water in the fuel , not really sure. So far, I've added a bunch of Seafoam and I've changed the plugs and no luck.

My question to you is, if it is the carbs that are gummed up causing these problems, do you think i could clean the carbs myself? i am not very mechanical but i can do the basics, I just don't want to get over my head. At the same time , I don't have $500 to bring to a shop to do the carbs.

Let me know what you think.

Thx!!

paisa007 says:

Was your fuel tank ventilated?

Dirty China says:

Do you you use the gin for lube?

abde abder says:

helpful video. thanks.

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