Reply To: Tiller movement almost locked in neutral on Evinrude 18HP 1960 mod 15032

[salnaes]

I managed to get the Evinrude 18HP started today. I had to tighten the nut holding the high speed needle. It appeared to be some fuel leakage there. After tightening the nut I managed to get the engine started. Then it also was necessary to adjust the two needles to obtain proper operation. So it worked running in a barrel, but there were excessive oil smoke in the exhaust.

I disposed the fuel and filled up with new 98 oktan fuel and mixed 2% synthetic two-stroke oil (1/50). (I had used 4% previously). But there were still excessive smoke in the exhaust, even though I used half the amount of oil now. It didn’t look good.

I have read recommendations that I should use 4%, but a local dealer here in Norway recommend no more than 2% when using this synthetic oil.

Any thoughts why there is excessive smoke in the exhaust? It looks like incomplete combustion.