How much gas do you see when you run your old merc with the muffs?

[hustler1ca]

Just wondering how much gas in the stream of water is normal when you are running say a merc 115 1976 at idle?
I got it purring like a kitten again and now im wondering if something else is wrong?

 

[hustler1ca]

Re: How much gas do you see when you run your old merc with the muffs?

Anyone????
Just wondering if you see gas with the water when you run your hose with it? my 115 SUCKS the gas......

 

[Mi duckdown]

Re: How much gas do you see when you run your old merc with the muffs?

How can you see gas in the water stream?

 

[hustler1ca]

Re: How much gas do you see when you run your old merc with the muffs?

Looks like a rainbow in the water running down the driveway.....

 

[Wingedwheel]

Re: How much gas do you see when you run your old merc with the muffs?

If its in the water stream, I'd be more suspect of the lower unit oil. unless you have an exhaust and discharge port together. If thats the case it sounds like unburnt fuel. You might be running a little rich.

 

[Fuzzytbay]

Re: How much gas do you see when you run your old merc with the muffs?

Two stroke engines, have no built in lubrication, so we add "oil" to the fuel. Not all the oil is burnt up during combusion, the excess oil if exhausted out of the cumbustion chamber and mixed into the water through the exhaust hub. One reason why 4_stroke engines are much better for the enviroment. At low idles, larger engines don't burn all the fuel either, and as the other posted mentioned, you might be a tad bit rich in on the idle mixture (rich is better than lean). This is why you see the "oil" sheen" in the runnoff on muffs. IN the water it will appear "blue". Fuel in the water will appear like a "rainbow". If you have a bottom end leak, a quick change of gear lube will answer that. If the oil is "whiteish" then you got a leak.