A flooded four-stroke outboard motor can be a headache, especially for inexperienced boaters. However, with some basic knowledge, it’s not as difficult as it may seem to repair it. In this article, we will discuss how to fix a flooded four-stroke outboard motor.
First and foremost, it’s imperative to know what exactly happens when an engine gets flooded. The engine becomes engorged with an excessive amount of fuel, which results in a rich mixture. Essentially, the engine doesn’t ignite because the fuel to air ratio isn’t accurate for combustion. Here’s what you need to do to fix it:
1. Turn off the engine
The initial step is to switch off the engine. If the engine keeps running, it will only damage the engine further.
2. Remove the spark plugs
Next, remove the spark plugs carefully. This will allow the excess fuel in the combustion chamber to escape.
3. Crank the engine
Once the spark plugs have been removed, crank the engine a few times. This will allow any surplus fuel in the cylinder to move out.
4. Dry the spark plugs
Wipe the spark plugs dry if they have any fuel on them using a clean towel or rag.
5. Check the air filter
Inspect the air filter to make sure it is dry and secure. If the air filter is wet, it should be dried or replaced.
6. Reinsert spark plugs, reconnect fuel line, and start engine
Put the spark plugs back in their correct locations and fasten them up tightly. Then, reconnect the fuel line and ignition switch. Finally, start the engine and monitor it to ensure it runs correctly.
It’s crucial not to try and start the engine frequently while it is flooded; this will only cause more damage. If you have attempted this multiple times and it doesn’t produce the desired results, it’s best to contact a professional mechanic. Flooding could be a symptom of a bigger issue with the motor.
A flooded four-stroke outboard motor can be quickly fixed if approached with precision and care. By pursuing the above steps, you’ll soon be able to get back to enjoying your time on the water.