2001 90hp johson ocean pro Smoking at the dock

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Capt Tommy

Cadet
Joined
Aug 9, 2011
Messages
9
Purchased this boat and motor about a month ago and everything seemed pretty good. It was a one owner with
360hrs. The last two times i started it up it was smoking kind of bad the first five minutes at the dock, which it didn`t do
the first 5 or 6 times i used it. It seems to run fine but that smoking has me worried, like there`s a major problem. To much prime? oil on the plugs?
Am i in trouble?
Thanks in advance Tom
 
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Haffiman

Commander
Joined
Dec 17, 2009
Messages
2,454
Re: 2001 90hp johson ocean pro Smoking at the dock

Check that you do not have pressure in the oil-tank after sitting some time. It might be a blocked ventilation in the oil tank cap. This may force extra oil into the VRO fuel section.
 
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boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: 2001 90hp johson ocean pro Smoking at the dock

How long did it sit between startings ??
 
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Capt Tommy

Cadet
Joined
Aug 9, 2011
Messages
9
Re: 2001 90hp johson ocean pro Smoking at the dock

It sat a couple of weeks between use. With the motor tilted off and on.


Tom
 
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Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,985
Re: 2001 90hp johson ocean pro Smoking at the dock

The carbs will have a gas-oil fuel mix in them, when you turn it off. Over time the gasoline evaporates, causing extra smoke on restart due to the extra oil in the carbs. If it occurs just at start up a week apart or so, I would not worry about it.

Also that motor has a vapor seperator on it. When you prime the motor, you only fill the vapor seperator with gasoline, but the carbs do not get fresh fuel, except from the primer, until the motor starts.
 
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