all 6 plugs black oily sooth plugs

[BIGKASH]

after 1 hr total run time on brand new plugs what cause this,? looks like it has carbon deposits on it cause the black stuff feels grainy...<br /><br />please help thanks in advance 1983 merc 200hp

 

[dakk1]

Re: all 6 plugs black oily sooth plugs

Hey Bigkash. <br />My manual, which is the one for your motor, says and I quote " wet oil-fuel deposits are caused by drowning the plug with raw fuel mix during cranking, overrich carburetion or an improper fuel-oil ratio. Weak ignition will also contribute to this condition."<br />Hope this is of some help...Dave

 

[BIGKASH]

Re: all 6 plugs black oily sooth plugs

my v6 have 3 carbs, and all 6 plugs are getting real black and wet,checked it today after i clean them and ran for 15 mins (SMOKES ALOT TOO).<br />it runs good even planes and goes good but then after 3 min on plane it would loos rpms and then die, very hard to start back...see i dont now why all 3 carbs would run rich all of a sudden...bought motor off ebay. i'm new to the oil gas mixing thing as this is my first outboard, i poured the oil in the gas fill and then poured the gas hoping the inrushing gas would mix with the oil in my thank...<br /><br />there is a posibillity that i might of addded to much oil. I do have a manual too<br /><br />i would like some response from the outboard veterans out there...thanks

 

[dkondelik]

Re: all 6 plugs black oily sooth plugs

couple of questions:<br />new gas or old?<br />was it put up with fuek in the carbs?<br />maybe you just got some bad gas<br /><br />possible that all of the floats are stuck but not terribly likely.<br /><br />how did you mix your fuel? may it is just too much oil.<br /><br />perhaps you can borrow or mix up a new tank and try again.<br /><br />could be ignition related. after she dies, if you let her cool-off for a while, does she start any easier.<br /><br />let us know what you find

 

[BIGKASH]

Re: all 6 plugs black oily sooth plugs

couple of questions:<br />new gas or old?<br /><br />NEW GAS<br /><br />was it put up with fuek in the carbs?<br />maybe you just got some bad gas<br /><br />GAS WAS DRAINED<br /><br />possible that all of the floats are stuck but not terribly likely.<br /><br />FLOATS WORK CAUSE NO GAS LEAK AND THE PRIMER BULB GETS HARD<br /><br />how did you mix your fuel? may it is just too much oil.<br /><br />I JUST POURED OIL FIRST INTO THE DECK FILL TUBE AND THEN THE GAS FROM A 5 GALLON CONTAINER<br /><br />perhaps you can borrow or mix up a new tank and try again.<br /><br />I HAVE THIS ALSO PROBALLY WILL TRY, ITS A 6 GALLON TANK THAT I KEEP FOR THE BACK UP 15HP MOTOR<br /><br />could be ignition related. after she dies, if you let her cool-off for a while, does she start any easier.<br /><br />YES, IT IS EASIER BUT SOMETIMES DOES NOT START AT ALL...HAD TO USE THE 15HP TWICE TO GET BACK IN, ONCE IN AT DOCK IT STARTED UP.<br /><br />let us know what you find<br />THANKS FOR YOU RESPONSE

 

[BIGKASH]

Re: all 6 plugs black oily sooth plugs

i just came back from putting autolite brand plugs instead and ran better looks like this after ideling at the dock for 10 mins<br /><br />looking at the v6 motor from the back<br /><br />dirty dirty<br /><br />dirty clean<br /><br />dirty clean<br /><br />any ideas, i'm trying to clear this up, but i need some help, also i did a complete compression test after all 120lbs, i'm pretty happy with that

 

[Solittle]

Re: all 6 plugs black oily sooth plugs

Shop manual time.

 

[BIGKASH]

Re: all 6 plugs black oily sooth plugs

ttt

 

[jim dozier]

Re: all 6 plugs black oily sooth plugs

You probably did this when you bought new plugs but check to see if you have the right heat range. Does this engine also have oil injection? If so, is it still operating?