Quote:
Originally Posted by ed_dash
I have noticed they are both smoking a little bit more, but as they both were about the same amount i guessed it was fuel related. I addded 5L of premixed fuel to the 80L fuel tank. But ive used around 80L since adding the premixed fuel.
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Ok, in theory you should have burned off or "pumped through" any excess oil. I assume your 80L has been at reasonable speed and not cruising about at idle? Pull a spark plug out, & see how manky it is.
Quote:
Originally Posted by ed_dash
Can you adjust the fuel / oil mixture on the engine or are they auto mix?
I should add they are both 2 stroke oil injection Mariner 60's
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Nope, other than adding more oil to the fuel. Not sure how old they are, but early auto mixing basically gave you an accurate, constant 50:1 (instead of all the guddling around wth measuring jugs at the fuel pumps) Modern ones use a mechanical pump that is driven from the crankshaft, so are variable ratio (don't need as much oil at idle, so by cutting the addition of it, means you don't oil your plugs up)
Quote:
Originally Posted by ed_dash
which is why i didnt think the little extra of oil going into the fuel tank via the premix fuel would matter. Surely the worst that would happen is that the plugs get oiled up a little.
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Yep. At the extreme, when you run them in you put about 110L of "Seagull mix" through, and it burns off pretty quickly when you revert to standard.
Might be worth pulling the lid off the air intake boxes & checking that the butterflies are opening fully. If so, I wonder if your spark has been retarded slightly?