Q&A

Why is my 4 stroke boat motor smoking?

Why is my 4 stroke boat motor smoking?

An Outboard Motor smokes because it is burning oil. Four Stroke Engines burn oil at startup mainly because of oil left in the cylinders or all the time with an oil leak. There are a couple of tricks that can be done to reduce the amount of smoke that an engine burns and here are your best options!

What does an engine that smokes at start up and then goes away indicate?

Usually, white smoke indicates that the diesel fuel is not burning correctly. If white smoke occurs during a startup in freezing temperatures, then goes away, it usually indicates frozen deposits of soot which expanded around the rings then burned away once the engine warmed up.

Why is my boat motor smoking?

Boat motors, especially two-strokes, commonly smoke because of an improper fuel to oil ratio or when the motor runs rich on fuel. When this happens, excessive blue-tinged smoke will come out the exhaust port, indicating too much oil is burning directly in the combustion chamber.

Why does 2 stroke engine smoke?

2 stroke motors smoke. 2 strokes smoke because the oil is mixed in with the fuel. If you’re getting smoke out of a 4 stroke engine, it usually means it’s running too rich, which means more fuel can be burned in the amount of air in the cylinder and you get incomplete combustion.

Why does my car smoke white when I first start it up?

But white smoke usually is caused by vaporized coolant, which often is the result of a blown head gasket. At the middle of the engine, you have the cylinders, which combust gasoline and air. Then, when you restart the engine, that coolant gets combusted, along with the gasoline and air. And that makes white smoke.

Does SeaFoam make your car smoke?

Yes, SeaFoam when used in a high concentration, i.e. de-carbonizing a 2 stoke motor or lawn mower, or a gunked up car fuel system, a bunch of white smoke will blow out, also a bunch of carbon gunk will also come out. Also run a low concentration several times a year to keep things flowing nice.

What makes a four stroke motor not smoke?

A Four Stroke, on the other hand, has an oil pan; where there is an oil pump that pumps the oil up into the powerhead, ( What is an Outboard Powerhead ), which lubricates all of the components without burning the oil and cuts down on the smoke.

What to do if your Suzuki outboard motor is not starting?

Common problems in Suzuki outboard motors can be easily diagnosed from home. Inspect the primer bulb if the engine is not starting. If there is no resistance, fuel is not entering the engine. The primer bulb and entire fuel line may have to be replaced.

Why does my outboard motor smoke when I start it up?

A common reason is that if you leave the outboard tilted down after running it, there can be oil build up in the cylinders. Which, as the engine sits, it can leak down into the cylinder and then, when you start it up, you will see smoke! Just trim the engine up to about a 45 Degree angle and let it sit for awhile. That should resolve the smoking.

How many horsepower does a Suzuki outboard motor have?

They can range from 2.5 horsepower to 300 horsepower. Outboard motors are attached externally to the stern. Common problems in Suzuki outboard motors can be easily diagnosed from home. Inspect the primer bulb if the engine is not starting. If there is no resistance, fuel is not entering the engine.