Ethanol for boats
Older outboard motors with carburetors were calibrated to
run on the old fuel. The ethanol in the new gas makes the engine run to lean.
This can cause hard starting and rough running and running hot. A good mechanic
can recalibrate the carburetor to tolerate E10.
E10 can cause some problems and it is often used as an
excuse when the engine runs rough. It is a great excuse to get you to buy a new
engine. The newer fuel injection systems are somewhat self-adjusting and do
handle E10 better.
The first thing for the older carburetor run engines it see
if adjusting the carburetor will take care of the problem. Second is use fresh
fuel.
E10 gas will absorb water. A ½ full tank of gas will absorb
more because there is a high surface area exposed to the air. A full tank is
better. A fuel stabilizer added when you fill up is recommended. If you think
there is absorbed water in the fuel, do not add a fuel dryer. These are often
ethanol and can compound the problem. There is no way to recombine separated
water and E10.
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