’85 smoking at idle

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   I have a 1985 with a 351

Smokes alot at idle, can't seem to stop it.

I put a new marine carb on a fwe years back, wondering if its jetted different? or something. Doesn't seem to be an adjustment for idle mixture.

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Rich Olson Members Profile Send Private Message Find Members Posts Add to Buddy List Guest	Post Options Post Reply Quote Rich Olson Thanks(0) Quote Reply Topic: ’85 smoking at idle Posted: July-05-2005 at 1:20pm
	I have a 1985 with a 351 Smokes alot at idle, can't seem to stop it. I put a new marine carb on a fwe years back, wondering if its jetted different? or something. Doesn't seem to be an adjustment for idle mixture.

GottaSki Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: April-21-2005 Location: NE CT Status: Offline Points: 3327	Post Options Post Reply Quote GottaSki Report Post Thanks(0) Quote Reply Posted: July-05-2005 at 1:26pm
	Look down the carb when its running and see if its dripping...
	"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing." River Rat to Mole

jameski Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: May-18-2004 Location: United States Status: Offline Points: 368	Post Options Post Reply Quote jameski Report Post Thanks(0) Quote Reply Posted: July-05-2005 at 1:35pm
	Black smoke is gas, blue smoke is oil. What color do you have?
	current boat 94 Sport Nautique previous boat 78 Martinique

Rich Members Profile Send Private Message Find Members Posts Add to Buddy List Guest	Post Options Post Reply Quote Rich Thanks(0) Quote Reply Posted: July-05-2005 at 2:00pm
	I believe it is black smoke - boat doessn't burn any oil. I do end up with black residue on the back of the boat.

jameski Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: May-18-2004 Location: United States Status: Offline Points: 368	Post Options Post Reply Quote jameski Report Post Thanks(0) Quote Reply Posted: July-05-2005 at 2:10pm
	What kind of carb did you put on it? I've never seen one that has no idle mixture adjustment. Some new carbs have the adjustment screws covered and sealed to prevent adjustment, but the seals can be removed when adjustments are necessary. How does the boat run? If the idle mixture is very rich, it will foul spark plugs and run rough.
	current boat 94 Sport Nautique previous boat 78 Martinique

’85 smoking at idle

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