Excess oil can produce a smoky exhaust, oil leaking out of the muffler, and sometimes loss of power. While not ideal, these issues can be fixed by simply replacing the fuel in the tank with properly mixed fuel. But running a two-cycle engine with too little oil can actually destroy the unit.
What happens if the mixing ratios in a 2 stroke engine are incorrect? If you put too much oil, it can generate additional carbon build-up, making it difficult to start the engine, blow excessive smoke which is particularly bad for the environment and may (with time) cause the engine to stop operating correctly.
What happens if you put too much oil in a 2-stroke? I am answering this as too much oil in the fuel mix. It will often not start because the spark plug oils up and shorts out the spark. If it does start, then the oil is burnt and makes way too much smoke.
Worn piston rings or reed valves that are no longer sealing properly may be the cause of the poor startability characteristic. When the piston rings don't seal properly, the engine doesn't build good compression, so when kicked, the engine struggles to come to life.
The excess oil can create air pockets in the oil, causing it to foam and reducing its effectiveness in lubricating engine components. This results in unusual engine noises, including knocking, tapping, or ticking sounds.
We all know that having too little oil in your engine is asking for big trouble. But having too much is also a potential disaster. It may be less common, but it can cause similarly catastrophic damage.
Depending on the particular engine, how hard you are running it, and so forth, a two stroke engine will run anywhere from less than a minute without oil up to as long as ten minutes or longer. The oil is either mixed with the gasoline or injected by a pump which puts in the right amount at a given rpm and load.
The best fuel for 2-Cycle engines is an ethanol free fuel. At Cat 6 Tools we have determined the best fuel for 2-cycle engines is ethanol free and already mixed with the correct gas:oil ratio. One of the best fuels for 2-cycle engines is TruFuel, ethanol free gas already mixed with the right gas:oil mix.
Overfilling with oil can cause foaming, which turns a slippery lubricant into a sudsy fluid with air bubbles that diminish the lubricating and cooling properties.
RAY: A quarter of an inch on most dipsticks equals a quarter of a quart. And adding an extra quarter of a quart, or even half a quart, won't hurt anything. TOM: When you overfill the crankcase by a quart or more, then you risk "foaming" the oil.
Never, ever, ever run a 2 stroke dry. It's the quickest way to destroy it. Not only does the fuel carry the lubrication but the fuel/air charge is the only source of cooling to the upper cylinder, spark plug and piston top.
Because 2-stroke engines are designed to run at a higher RPM, they also tend to wear out faster; a 4-stroke engine is generally more durable. That being said, 2-stroke engines are more powerful. Two-stroke engines are a much simpler design, making them easier to fix. They do not have valves, but rather ports.
If you've accidentally put too much oil into the engine, it is best to try to discard the oil until below the maximum limit. Driving with too much oil will only make your engine deteriorate quickly. To do this, just like changing your own oil, drain the excess oil through the drain plug at the bottom of the engine.
When the oil is whipped into a froth from overfilling, very little oil gets into the motor. This oil then gets overheated and starts to break down much like the oil in an underfilled reservoir. With very little oil filtering through the engine, everything starts to overheat.
2 Answers. The problem is, if your engine is running correctly, it won't burn it off. While engines will use a little bit of oil, most of that oil is replaced by unburnt hydrocarbons introduced through blowby. Due to this, oil levels most often stay right about where they should be throughout the life expectancy of oil ...
Things You Should Know. A quart or more of excess oil can cause engine damage. Common symptoms include a smoking tailpipe and high pressure on the oil gauge.
If the level of oil on the dipstick is an inch or more above the recommended fill level, then your car has been overfilled and should not be driven again until oil has been drained from the vehicle; otherwise, you could cause serious damage to your engine.
If you are a beginner rider, you will find the 4-stroke 250 a lot easier to handle than any other bike. A 2-stroke has so much power that a beginner might have a hard time controlling the bike.