Too much Engine Choke | Does this to your Engine. Chainsaw or Lawnmower wont start!

VISUALLY EXPLAINED

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Using too much engine choke can indeed cause a flooding issue and prevent the engine from starting. To understand why, let's explore the mechanics behind this common problem.

The Purpose of the Choke: The choke is a device in small engines like chainsaws and lawnmowers that restricts the flow of air to the carburetor. It serves a crucial role during cold starts by increasing the fuel-to-air ratio. When the engine is cold, it needs more fuel and less air for proper combustion, and the choke helps achieve this by partially closing off the air supply.

Fuel Enrichment: When you engage the choke, it narrows the air passage, which increases the vacuum in the carburetor. As a result, the carburetor draws in more fuel compared to the limited amount of air, creating a richer mixture.

The Flooding Effect: If you keep the choke engaged for too long or push it too far, the engine gets an excessive amount of fuel in the carburetor. When this happens, the fuel-air mixture becomes overly rich and saturated. The carburetor bowl can overflow, causing fuel to flood into the engine.

The Consequences of Flooding: When the engine is flooded, there is too much fuel for ignition. An overly rich mixture doesn't burn efficiently, making it difficult for the spark plug to ignite it. As a result, the engine won't start, or it might start and stall immediately because it can't burn all the excess fuel.

Problems Beyond Non-Starting: Flooding can lead to other issues as well. The excess fuel can wash away the lubricating oil on the cylinder walls, increasing friction and possibly causing damage over time. It can also foul the spark plug, making it necessary to clean or replace it.

Proper Choke Usage: To avoid flooding, it's important to use the choke correctly. Engage the choke when starting a cold engine, and once the engine starts, gradually disengage it as the engine warms up. A good rule of thumb is to push it in or open it up slightly as the engine gains temperature. This allows for a smooth transition from the enriched cold-start mixture to a leaner, normal operating mixture.

In conclusion, the choke is a valuable tool for starting a cold engine, but using too much of it for too long can lead to flooding, causing starting problems and potential engine damage. Proper choke management is essential to ensure that your engine starts smoothly and runs efficiently.

Whether your chainsaw wont start, or you need to know how to tune a chainsaw, how to tune a quad bike, how to tune a mini pocket bike or how to tune a carburetor in general, knowing some basics of how these two carburetors work will give you an understanding of why you are doing the adjustment.

The more you learn about, carburetors and how they function, the easier you will find it to tackle carburetor diagnosis and repairs. This is a chance to sit back and increase your knowledge!

Many thanks indeed

Craig Kirkman (Owner and creator of The Repair Specialist channel and copyrighted diagrammatic content) Please check out my amazon shop. I have recommended some useful items from Amazon below. I guarantee you that these items are the sorts of things I use on a daily basis so I know they are good. I have to be careful in recommending products because I have my name and credibility at stake. So I will only recommend good products. https://www.amazon.co.uk/shop/therepa...

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