2000 40HP Merc smokes on startup

[dmessy]

This 3 cylinder , oil injected motor, rolls blue smoke on startup for about 1min. Starts well. I use it weekly(or more), disconnect fuel line b4 shutdown, and run Quicksilver oil. The motor stays at a 45+ degree angle when not in use( on transome saver). Any ideas as to why?

 

[ob]

Re: 2000 40HP Merc smokes on startup

dmessy, are you saying you disconnect fuel line and run engine until it stops?

 

[dmessy]

Re: 2000 40HP Merc smokes on startup

No, that would cause damage.

 

[ob]

Re: 2000 40HP Merc smokes on startup

Don't understand what you mean by disconnecting fuel line before shutdown,but maybe your getting air in fuel lines and it takes a while to work it out on start-up.

 

[dmessy]

Re: 2000 40HP Merc smokes on startup

What I do OB ,is shut off engine , THEN disconnect fuel line( you know , like normally). It is not a starting problem, it just smokes excessively for about 1 min. upon initial start up for the day. Just wondering if anyone might know of a cause for this.

 

[ob]

Re: 2000 40HP Merc smokes on startup

Mine smokes a little on startup as well.Fuel evaporates from system when shut down aided by engine temp.Oil doesn't.I normally don't disconnect fuel lines when in seasonal use.Just trying to help.

 

[dmessy]

Re: 2000 40HP Merc smokes on startup

Thanks ob, will give it a whirl.