BE CAREFUL, though, because adding too much oil can also clog up the filter, resulting in another fouled plug.įor example, it means that for every 128 ounces (one gallon) of gas, you add 4 ounces of 2-stroke oil for a 32:1 ratio, or just over 3 ounces to a gallon for a 40:1 ratio. If it’s really dirty, that makes it difficult for air to get through to the engine, causing a rich condition.Įither clean it thoroughly with some Air Filter Cleaner (Amazon), or buy a new filter.īefore you put it back in the air-box, treat with some air filter oil or spray. Not enough air = No Combustionįirst thing to do if your spark plug has been fouled is to check the air filter. For 2-strokes click here, or if you have a 4-stroke click here. When one or more of the jet circuits are too rich, they allow too much fuel into the engine, causing it to flood or give your 2 stroke a wet spark plug and foul.Ī rich pilot jet circuit is the most common cause of plug fouling, and I can can show you how to easily tuning it in just a few minutes. Jetting a 2 stroke is often a little more picky than a 4 stroke carb, but they can both cause a lot of problems when the jetting is off. With that said, these are the most common reasons why your spark plug is fouled: Incorrect jetting mixture When you change multiple things, you won’t know for sure what fixed the problem – or worse yet, you don’t know what made the problem even bigger! Number two: only do thing thing at a time. That example is a little extreme, but as you go through this list, just remember to try the quickest solutions first. That means you shouldn’t take the engine apart at the first sign of it not start. Number one is: start with the easiest things first. 2 Pro Tips for troubleshooting your dirt bike problems When troubleshooting a dirt bike problem, there are two tips that I always recommend to make your life easier and less frustrating. Now that you’ve learned the most common symptoms, it’s time to cover what actually causes these issues in the first place. If you do a regular check of the spark plug and it shows up as black with carbon on it, there’s a much higher chance that it will foul sooner than later. Now, this could just mean that your fuel mixture is too rich, but it’s a small warning sign. One of the most common signs of a plug fouling in your 2 stroke or 4 stroke dirt bike is a black spark plug. Spooge is most common on a 2 stroke exhaust Black spark plug This could be over the course of hundreds of hours on a used spark plug, but it can happen quickly if there’s too much fuel and/or oil getting into the engine. When your dirt bike won’t idle, that’s a good sign that the spark plug is fouling and needs to be replaced. Maybe your can get it running once or a few times, but it just keeps dying. When the plug is so wet or full of carbon, it won’t even be able to spark and ignite the air-fuel mixture, causing your engine to not even start. It can happen on a cold start, but you usually get the ‘ dirt bike not starting‘ symptom after the engine has been warmed up. These are the most common fouled plug symptoms for 2 stroke & 4 stroke dirt bikes: Won’t start You may have one or multiple of these issues, but if you feel or see one of these, you might be able to prevent it from completely fouling and not running. There are a number of signs that give you the heads up that your spark plug is fouling or is already fouled. For example: your plug fouls out in the woods miles from your truck and you forgot to bring a spare spark plug in your tool pack. I would only recommend trying to clean a plug as a worst case scenario. It might start and run, but it’s a very temporary fix. You can try cleaning the black carbon off of the spark plug with some sandpaper, but it may not work. The carbon (fuel) eventually builds up on the spark plug so much that it can’t ignite the air-fuel mixture: this is what’s known as a fouled spark plug. This carbon build-up is the black that sticks to the spark plug, top of the piston, and in the combustion chamber. So, the excess fuel either goes out as smoke, stays in the combustion chamber to get ignited on the next cycle, or causes black carbon deposits on your spark plug. Unfortunately, gas engines aren’t that efficient. If an engine can completely ignite the air and fuel mixture, then there would be absolutely zero smoke or “emissions” to worry about.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |