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Yes they do, the spark and piston must be in time.
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∙ 13y ago
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Do you find carburetor in 4 stroke engines or 2 stroke engines?
Both 2-stroke and 4-stroke engines have a carburetor.
How do you set timing on 2 stroke 2 cylinder engines?
Hi, The answer for your question would be, the timing will set based on crank angle position only as it is done in 4 stroke engine. It differs for a TBI based engine and GDI based engine.
Valve timing diagram of 2 stroke engine?
valve timing diagram of two stroke engine
Is a Suzuki DT115 TCLK a 2 stroke or 4 stroke motor?
DT model engines are 2 stroke
Why four stroke engines are not used for marine propulsion?
They are - most inboard engines are 4-stroke. But as with land vehicles, you can get a smaller engine with 2-stroke (or more horsepower with a smaller engine) so the small engines like some outboards tend to be 2-stroke.
What are advantages of two stroke engines over four stroke engines?
There are a couple, less parts for one therefore lighter. Also, 2 stroke engines fire every time the piston comes to the top. Which means every stroke is a power stroke. 4 stroke engines fire every other time.
Does Yamaha 80cc 4 stroke take 2-cycle oil?
No. In this case, stroke and cycle means the same thing. So 2-stroke/2-cycle engines should have 2-stroke/2-cycle oil and 4-stroke/4-cycle engines should have 4-stroke/4-cycle oil.
Why do most very large engines operate on two stroke cycle?
very large is the keyword here. for a very large engines that runs large machines, we need high power engines. two-strike cycle engines produce more power than 4-stroke cycle engines. that's why they are used. as they produce more pollution than 4-strokes, they must be limited to small spaced engines machines or large machines that required very high power.
What is the purpose of the piston ring locating pins?
To keep the rings from rotating on 2 stroke engines. You will not see this on 4 stroke engines.
2 stroke vs 4 stroke?
On a 2 stroke engine, each cylinder fires every time the piston comes up. On a 4 stroke engine, the cylinder only fires every OTHER time the piston comes up. 4 stroke engines have 4 strokes: Intake, compression, power, and exhaust. 2 stroke engines complete these cycles in only two strokes of the piston by use of ports in the cylinder walls. 2 stroke engines usually produce more power for a given weight/size. But, in gasoline engines, 2 stroke engines are typically less efficient (use more gas) and have much higher pollution levels (note: some newer "direct injection" 2 stroke engines do much better on pollution levels than the typical 2 stroke)
Why do 2 stroke engines backfire?
bad gas
Are 4 stroke outboard motor engines for boats going to be outlawed?
4 stroke outboard motor engines are unlikely to be outlawed anytime in the near future. 2 stroke engines probably will be outlawed. 2 stroke engines pollute the atmosphere. 4 stroke engines are standard gasoline engines like are in automobiles. They will probably be required to get better pollution control equipment, which will be easy. They will probably be required to be made more efficient, which will not be quite as easy. They will probably not be outlawed.
