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Could be bad fuel. I had the same problem drained the fuel, replaced and ran fine. Depending on the area of the country you are in, the fuel starts to turn after about I

believe 13 days:

Stability:

Ethanol blends can turn "SOUR" in as little as 2 weeks. Evaporation and oxidation are the two biggest problems effecting Ethanol blends. Ethanol is lighter than gasoline. When it sits in a tank that is less than full for a period of time the Ethanol rises to the top and evaporates into the air. This is especially true in a vented fuel system. When a tank is less than full the Oxygen in the air in the tank reacts with the fuel and causes the build up of gums and varnishes. Evaporation leads to a poorer quality fuel and the gums and varnishes can plug filters, injectors and carburetors. EhtanolRx and Sentry will help.

Water:

Ethanol is a hygroscopic liquid, meaning that is readily attaches to water. It it also fully miscible (mixable) with water. In very small amounts this is not a problem. But when the saturation exceeds a specific amount is becomes a major problem called Phase Separation. The amount of water Ethanol can safely absorb is dependent on the temperature of the fuel. At 70°F it is .5% (.005) of the volume. If it exceeds this amount the Ethanol and water will fall from suspension and sink to the bottom of the tank forming an Ethanol /Water layer that can produce acids and cause major engine failures. At cooler temperatures it is less and at higher temperatures it is more. This is especially a problem during transportation and storage of fuel. A hot tank may have 1% water, when is cools off it can exceed the amount and cause phase separation. In the case of storage tanks this may go undetected and delivered directly to your tank. This can also be a problem when Ethanol is added to a tank that has water in it already.

I would start with changing fuel, then check fuel pump.

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13y ago

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