engine running rich

[Colliemcc]

I have just replaced my spark plug in my motor the boat has ran for about an hour or so. I took out the plugs today and they seem very black, in the last year or so I have noticed that my boat is a little heavier on petrol. Can I lean out the carb and does anyone have a link to some information on this
My boat is a 2004 volvo penta 4.3 GL-D I think it has a holley Carb.

Thanks Colm Mc C

 

[jerryjerry05]

Re: engine running rich

You might try rebuilding the carb.
Do a search on this site for manuals.I think Don posted some Volvo stuff.J