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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 Outboard Motor Floods		  New Topic  Topic Locked
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Kip C
Navigator

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USA
243 Posts
Initially Posted - 09/30/2003 :  16:26:34  Show Profile
Hi Everyone,

I have a mariner 8 outboard that has been stored indoors for ten years and today I started it. Unfortunatly, inorder to get it to start, I had to disconnect the fuel line and when I reconnect it the motor floods out. When the motor does start, it smokes for awhile and runs rough. Eventually, it smooths out and stops smoking. Any ideas would be appreciated.

Kip Casada

'90 C25 #6021
SR/WK
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JimB517
Past Commodore

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USA
3285 Posts
Response Posted - 09/30/2003 :  17:27:01  Show Profile  Visit JimB517's Homepage
If this problem were on a land engine there is a float valve in the carb stuck open. This is a small valve that lets fuel through the fuel line into the bottom of the carb.

Since your engine sat 10 years it is probably held open with gum or dirt.

Remove the carb, unscrew the part below where the fuel line connects, and clean out the valve with B12 Chemtool (carb cleaner). Work the floats and spray copious amounts of cleaner.

Not sure that outboard carbs have floats but there must be a valve that regulates intake of gas.

<img src="http://www.indiscipline.org/cat25/pictures/icon.jpg" border=0>Indiscipline 1978 FK #398
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atgep
Master Marine Consultant

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1009 Posts
Response Posted - 09/30/2003 :  20:52:44  Show Profile
Warning!!!! hearing that advice makes me cringe.

The part about cleaning the carb is right, just be carefull!! I was doing this many years ago and got an eyeball and mouthfull of cleaner. I can remember it like it was yesterday. The real suprise for me was when the cleaner worked the gunk out.... a previously blocked port opened up and came right back at me. Good luck. Tom.
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JimB517
Past Commodore

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USA
3285 Posts
Response Posted - 10/01/2003 :  01:00:11  Show Profile  Visit JimB517's Homepage
sorry for being so uncertain. I am at home now looking at my outboard manual. Yes, they have floats and needle valoes just like a motorcycle. I am sure your needle valve is stuck open. I had the same problem on a Honda motorcycle once.

<img src="http://www.indiscipline.org/cat25/pictures/icon.jpg" border=0>Indiscipline 1978 FK #398
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Kip C
Navigator

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USA
243 Posts
Response Posted - 10/01/2003 :  19:05:25  Show Profile
Thanks alot guys. A little carburator cleaner and no more flooding. Starts on the first pull after sitting ten years!

Thanks again,

Kip Casada

'90 C25 #6021
SR/WK
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Bill Holcomb
Admiral

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USA
769 Posts
Response Posted - 10/02/2003 :  10:38:56  Show Profile
Hey Kip,

Don't forget that with the Mariner that it's a two-cycle engine. Part of the smoking is probably due to the oil in the gas. If there's no smoke, the oil may have partially seperated - making for ineffective lubrication.

Bill Holcomb - C25 Snickerdoodle #4839
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.