How Does A Small Engine Work? 2 & 4 Cycle

In "The 4 Strokes", Taryl goes over 2 and 4 cycle engines as demonstrated by different characters from TFA past. He does his best to explain how these small engines operate to better help you understand at home how these perfectly timed engines work. So sit back, laugh a little and maybe you'll learn something new you didn't know before? If not, it's still good to reiterate sometimes, and as always... There's Your Dinner!!
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#smallenginerepair #2cycleengine #4cycleengine #tarylfixesall #grassratsgarge #howasmallengineworks #engine #motor #troubleshooting #troubleshoot #explanation #lawnmower #ridingmower #knowledge #DIY

[@TarylFixesAll]

Support the channel! Grab yourself a Taryl T-Shirt, Coffee Mug, Tools & More! Shipping Worldwide Daily from the Taryl Apparel online store! www.TARYLFIXESALL.com

[@jhonb6768]

Hey, Norton Antivirus is blocking your shopping site. I did submit a dispute with them, but you might want to look into it. they said they would respond to me in two days. I will let you know what they say.

[@57bulldog75]

In an 18 minute video, you served up more knowledge than a week of shop class ever would. If I were a shop teacher, this would be a must see video. SALUTE!

[@Hevey45]

yeah and like my auto teacher didnt teach me anything in a one tri class for small engines i learned mainly from tayl books and self taught

[@christravis481]

Holy cow Blademan that was a all star lineup!

[@mrbrown6421]

The unstated component of this sequence is INERTIA. When the spark plug detonates the fuel/air mixture, the explosive force is transferred to the flywheel, the piston rod counter balance, and the mower blade. So an explosion is converted to a rotational force that causes all mechanical devices to repeat the sequence. LISTEN: When you PULL the starter rope, YOU are providing the FIRST burst of energy that imparts rotational inertia to the flywheel, etc, to breath life into this brilliant sequence of events. And yes, the mass (weight) of the mower blade is designed into this process, which explains why mower engines do not run well, UNLESS they have a blade attached. Incredible mechanical ingenuity that is used so often, yet is so difficult to grasp in its entirety. THanks for THinking! Mr. Brown North Central Florida

[@coolbluelights]

I already know how engines work but I'm still watching because it's Taryl lol

[@zanderx7]

I almost immediately jumped to the comments when I saw those teeth, can’t even watch this vid cuz of it

[@honklerton732]

The Carburators really are neat though - the way they are designed is really special. When Taryl says that it mixes the air with the fuel - it literally sucks the gas up from the float bowl though a really small opening that literally turns into really fine MIST once the air smashes against it. In slow motion it's like you'll be seeing some drops of fuel jump up as little blobs - and then the air slams through really quickly and it's like BOOM FINE MIST - and all that fine mist (gas vapor) gets immediately sucked into the engine to be exploded by the spark plug). You guys know how a potato gun works? How when you put the fuel in it's gotta be in a mist form to explode properly? People will sometimes use hair spray or some kind of MIST / spray type fuel? In order to get a proper explosion into the chamber the fuel has to be in mist form - and that's one of the HUGE functions of the carburetor. It turns that liquid fuel into a fine mist every time it sucks air in - and when it sucks air in it's like really short but powerful burst of air. There are a ton of videos on youtube that go into WAY small detail about this - and I think tech ingredients has one, as well as Mark Rober I am thinking he has one too? You guys should watch those - those videos really do open your eyes A LOT MORE about what EXACTLY that part really does and HOW it does it down to the smallest and yet simplest detail. Engineers like to call it: Putting the gas into a stochiometric mixture to the point where it is exploded most efficiently (to the point where after the explosion is done, all the gas is burnt up and there isn't any fuel left inside the chamber after the explosion). Meaning there has to be just the right amount of air combined with just the right amount of fuel to get that perfect mix - otherwise you're running to rich (too much fuel, or not enough air), or running to lean (too much air / not enough fuel), and since the carb really has a fixed amount of air that goes into it and that part of the mix (oxygen) is designed to never change just by the way the carb is physically shaped in it's internal structure - it's all really decided about how much fuel is going into it, that's the changing variable and it's designed to be that way - since that is what the screws control - the amount of fuel being sucked up into the chamber before it's turned into mist by the power suction when the air smacks into it. There's basically two suctions that occur in the carb... the first one brings the fuel up into the main carb chamber where they are just solid droplets of wet fuel, and then the second power suction hits which turns it into a super fine mist and brings it all into the engine to be exploded. It really is neat seeing it all happen in slow motion recorded from a super high FPS camera. The inside of the main carb chamber (for many of them at least) is shaped like a sideways hour glass, where at the center it's the most thin, and then they taper out to larger openings on the ends - which creates this powerful Jet like vacuum effect right where the gas droplets are being drawn in from the center.

[@not2fast4u2c]

When I was Young and Healthy I was like a new 4 Cycle engine I I had good Compression good Power and clean Exhaust Now that I am Old I have weak Compression lack of Power and bad smelly Exhaust

[@geraldraulerson5241]

Been there done that 😂😂

[@ferko6]

"Keep replacing parts till it works " that perfectly describes my approach to life in general 😂. Great video, thanks!

[@richardnettles7481]

“I couldn’t find any 2 stroke engines” with 4 weed eaters hanging in the background 😆

[@dkupy100]

I thought for sure Elkskins would be the Power stroke. "Fire it up!"

[@Hevey45]

LOL

[@potterygogo]

Thank you for making this easy to understand.

[@baddad5781]

Been trying to understand a compression release for a while now and in 10 minutes you taught me how one operates. Been a subscriber for some time now and really enjoy your videos and the knowledge you impart to us all. Thank you

[@altonhouse9740]

Excellent tutorial, thank you

[@justsaying4195]

You guys make learning fun - thanks

[@ronwhitaker7713]

Glad i came across you guys.. Thanks

[@terryfields5915]

Helped me a hell of a lot thank you taryl

[@lsittmann]

I think Slippers textbook descriptions for intake, compression, power, & exhaust was simply... " Suck -> Squeeze -> Bang -> Blow " _ Great video..!!!

[@JamesFrampton]

great informative video Taryl Dactal. Thumbs up

[@ihikefar]

Imagine this- in 50 years a descendant of Taryl will be doing a video on how a rechargeable electric motor works.

[@davidvickers8425]

Hydrogen

[@lawnmowerdude]

Goats

[@chrisbcritter6112]

Four years.

[@GoldSrc_]

@@davidvickers8425 Hydrogen is not practical and it's a pain in the ass to store safely. Batteries will remain king for cars in the future.

[@dkupy100]

@@GoldSrc_ I think we are talking about mower engines here.

[@William_Hada]

Great job guys on explaining all that! It's hard to believe that those intake and exhaust cycles on a 4-stroke engine are happening 25 times every second at 3000 RPM!!!! That seems amazing to me.

[@800acceptnoimitation]

Great explanation video.

[@RG-xr2rc]

Thank you Mr. And thank you to all your friends. It's a excellent educational video.

[@uggggggh]

Your videos are great. Keep em coming

[@tommybounds3220]

Thank you for the video

[@themowerman]

Yo yo me old Mucker from the 🇬🇧 how an Engine works cool this is a video for me .. runs on magic..

[@primearts5197]

Nostalgic educational vibes, I love it! Super smart mann👌🏾

[@moondogdieselworks3883]

Awesome as usual

[@mba2ceo]

He such a AZUM teacher !!! GOD BLESS U

[@dannylister558]

Taryl has a way of bringing explanations to life...

[@travismauldin7194]

Well done Taryl!

[@jensenwilliam5434]

Thank you!!!

[@juansalazar7944]

Excellent video thank you for your teachings .

[@korodski]

Great info Mr Dactyl! 😎💯

[@alexandergraham9951]

Well done always like watching these videos no matter what taryl talks about it’s always interesting

[@hectorjconde9518]

Great explanation!! Nice ilustrative and so easy to understand, and funny video!! Thanks . Greetings from Puerto Rico🇵🇷

[@markcaldwell3978]

1st off love the channel been watching for years now. I guess now you can make a video on, Why have a 2 cycle over a 4 cycle, and vise versus. Again thanks for the entertainment!

[@dkupy100]

I'll guess. You can't run a 4cyc carb sideways or upside down. 2cyc trimmers, hedge trimmers, chainsaws are turned in all different directions during use.

[@BerkeleyRican]

THANK YOU!!!

[@Hevey45]

6:47 Wow, very intresting and im surprised that in a high school class I took last year they never taught me how the compression release worked nor did they really teach us anyhting abt a small engine. I mainly learned from u and teaching myself so thanks for teaching me on some hillbilly machining and how a engine works.

[@A_Renaissance_Man]

Thank you. Your thumbnail suggested that you were going to do some Scotty Kilmer narrative but instead you were yourselves. Excellent.

[@nattybumpo7156]

Can't stand that guy.

[@Hjerte_Verke]

Using a horizontal shaft Briggs flathead would have been ideal for the demonstration. Taking the cylinder head, side/sump cover and valve cover off will show the insides and sync well with your book illustrations too.

[@mrbrown6421]

Another interesting point: Watch the magnet sweep past the coil as the flywheel turns through TWO full rotations for a 4 stroke sequence. It actually causes the spark plug to fire TWICE. Once to cause an explosion, and once as a sacrificial spark (unused, does nothing). Yep, that poor plug actually fires when the cylinder is full of exhaust. And no, your car does not have these "sacrificial sparks".

[@closertothetruth9209]

Class time at Tarylls, im here for the refresher course LOL. i want a taryll improves a mowers effeciency video, porting, big spark etc LOL. Ages ago after watching cars and cameras i ported my OLD briggs push mowers for fun what a difference cleaner exhaust smell not fuely and no bogging down mowing long lawns.

[@anthonyp.2492]

Great vid Taryl... We see it run but how cool to get a breakdown of it🤙 wuts yer preferred small engine to tinker on 2 or 4 strokes thanks from Fl.

[@billbaber6653]

Good show

[@bigray2859]

Thanks!

[@eddimkay]

That's cool man.

[@jeffpiatt3879]

Thumubs up! I would like to see one of these info videos on how a hydrostatic transmission works in our Z-turn mowers.

[@TheBgred1]

Im so disappointed you didnt play the uncle andy song for uncle andys appearance lol , I love it, gets me every time

[@allenaviation5746]

I have a question. For an engine with compression release, Is a compression test with a gauge even valid? In other words, does the recoil or electric starter produce sufficient centrifugal force to override or retract the compression release lobe? THANKS!

[@allenaviation5746]

@Philippe Blondeau OK thanks this helps.

[@joshcanttakeajoke2853]

I'm pretty sure the compression gauge instructions include something about this and is why on a push mower engine you're supposed to quickly pull the cord 3 or 5 times in a row. I lost my instruction booklet a long time ago so I could possibly be telling you some bull$#!+

[@mikespain8655]

Only on this channel do the people comment consistently on anything except the content, which is small engines. Good video, thanks for the explanation.

[@mauricesmith9560]

GOID JOB EXPLAINING

[@mfcjr1]

I ran the 4-mix Stihl trimmers when I was a landscaper and thought they had more torque. It would power through any length of grass with out bogging down.

[@generalzod7674]

Are you coming to the Portland, IN bike show this year? It’s in June

[@weschaffin]

This guy has grown on me. I’m a new sub’er.

[@stephboeker7835]

Taryl ......... Slippers, Uncle Andy, Skippy or Anthony, I understand compressing air after intake. I understand the chamber having to be closed to push the piston down in the power stroke. So , would there be a vacuum in the chamber during the time of and right after ignition of the mixture ? I mean to say, as the sealed chamber volume expands in the power stroke, while the air / fuel mixture is burned away , what is left in the new larger volume cylinder ............... & how can there be any exhaust left to flow out if it's all been burned away ? I'm just a C+ man and may have more questions than I can answer ?? Thanks for your generous consideration, Sincerely ................................ Steph

[@gillgetter3004]

Parts cannon !!!!!!!!!

[@charliebull9544]

Saw your last video thought it was great. Been looking for one of your bobble head dolls cant find it for sale anywhere. Where can i get one i am a HUGE fan.

[@jeffreydevoti7000]

Learning how an engine works while I relax in my boxer shorts and wide beater t-shirt.

[@jaredpoboisk9094]

Slipper's sweatshirt is friggin awesome.

[@jimmyg4057]

Good shit, Maynard.

[@thyubernoob]

I felt like I was back in 1985 High school Small engine repair class...👍👍

[@Bobherry]

more videos on how stuff works please

[@jaryljackderriere1232]

Good lesson on theory of operation. If'n ya don't know how it works, how ya gonna diagnose it?

[@93sundance]

I had a Honda scooter thing back in the 80's and it was a 50cc 2 stroke that had oil injection. Just pour fuel in the tank, and under the seat was the oil tank. You just had to check it and fill it as needed but had to go to Honda dealer to get the oil.

[@greglewis3382]

When I was a kid I had a 2 stroke Kawasaki approximately 100cc dirt bike that worked the same way.

[@scrotiemcbogerballs8286]

Great video buddy thanks for sharing that was really awesome hopefully some of those dummies out there learned something lol

[@lynnh7694]

So, is the power applied on the up or down stroke?

[@kelliegrase4658]

How does the Stihl 4 mix engine lubricate the rod bearing and crank bearings?

[@ryanfleck1101]

What's your thoughts on using synthetic oil in air cooled engines Taryl? I've heard don't do it what's your thoughts

[@henrysosebee9241]

What carb can replace the carb on b&str with the carb that has the solonoid on the float bowl

[@theperfectpaintertoolreview]

How does the crank, valves, lifters and internals of a 4 mix engine get lubricated if the air/fuel is above the piston?

[@JeffinTD]

Someone should get Taryl a 2 stroke Detroit diesel, just to get him out of his element.

[@johnnellis3025]

Piston ported isn't going to stump him, He has seen it for sure. How about a rotary valve 2 stroke? I bet he's seen that too. I've seen everything, except 4 mix 4 stroke eng. oil! So now i've seen everything, until the next new thing. Just when i thought i new it all.

[@flyingdutchman773]

What are the fins on the flywheel for?

[@Savage-lx5yj]

Taryl, could you explain overlap and it's purpose? Thanks

[@calvinmientke3539]

The momentum of the air/fuel mix allows the charge to continue "slightly" after the piston reaches the bottom dead center. At the end of the exhaust stroke, the same thing happens with the piston pushing the exhaust gas out "slightly" after top dead center. At this time is where the overlap occurs. It doesn't seem right, but it workes. Dragsters have such an overlap that fuel is blown out the exhaust. Really bad fuel mileage :)

[@Savage-lx5yj]

Makes sense! Thank you sir!👍

[@reelhoss3715]

I have a Honda gx120 that will only start on full choke no matter how hot or cold the engine is or how long I’ve been running it. If I stop the engine I have to put the choke back on to restart it. Would you possibly know what would cause this issue? I’ve even changed the carb and it’s the same thing.

[@luuk-out-below9804]

Uncle Andy is awesome.

[@_007B]

Very informative video. Excellent! Just wish they weren’t making fun of me like that with them teeth 😂 8:30 💀🤣🤣🤣

[@refugeinc.159]

I'm starting to think the Slippers, Uncle Andy, and Skippy characters are all played by the same dude.

[@chevylandt.v]

True.

[@autobotavengerfireballxl5339]

Yeah boy

[@shaney2000]

Awh, U never explained the detriot diesel 2 cycle engine!!!!! I was so looking forward to it!!!!!!! 🤣😂

[@godngunclinger]

at 15:03 you could have said intake and compression are combined in two halves of the same stroke; followed by the power and exhaust which are combined into two halves of the second stroke; but to be a good example to the children use correct terminology (ie carburetor only has one 'T' in its pronunciation)

[@jameshoppersr.-beaver-retr215]

Taryl do you sale used Motors if you have any.??

[@Theclassicguy-kl4km]

Woooooooh yeahhhhhhh

[@danielc5205]

The intake charge is actually push in, not sucked in, via atmospheric presser. It's why you need to jet a carbureted engine for altitude. Saying that the piston sucks in the intake charge, is a misnomer.

[@spencerevenhouse8175]

Yall are goofy as hell 🤣 very informative video thanks guys

[@DAS-Videos]

Remember those old .049 model airplane two stroke motors? The guy who invented those must have been a genius. There was one .020 with was tiny.

[@skyartrc8286]

Instead of finding two strokes to help demonstrate the cycle process, you should have found two "jokes", Ronnie jergenstein being one of them.

[@alexboi32]

I was literally writing a comment about the stihl 4mix until you explained it. Germans love to make things over engineered. Granted.....they do work extremely well and are quite powerful and without the need of oil changes of any kind attracts the commercial folks.

[@ozarkarky]

How about a video on the causes of backfires and how to fix them?

[@oxyfee6486]

Backfiring while running,or when you shut it off?

[@Shootingstarcomics]

Beans

[@michaelglynn2638]

Those characters 😂👍

[@mba2ceo]

how is the crank lubed in a 2 stroke ?

[@patrickpoulard24]

He should have had a lawnmower Detectives episode with this post. It would have gone very well with this lesson on engine strokes. 🤔🤔🤔🤔🤔

[@tmurray1972]

But Taryl, can you explain Stihl’s 4 mix engine in more detail, maybe show the maintenance adjustments on the valves? Or Taryl you could do a comparison between Stihl’s 2 stroke vs 4 mix weed eaters? I know you hear me through the inner screen, and thanks for the video’s, you guys kick azz.👊🏻👏🏻👏🏻👏🏻👏🏻

[@GuitarGuys7299]

The easiest way to describe the process is Suck, Squeeze, Bang, Blow. Oh wait. Those are different kinds of strokes. 😆

[@andyhamilton8940]

Taryl are you wearing a new Elkskins shirt from the online store?

[@ralphwatten2426]

What about the rotary valve 2 stroke engine Taryl, what about the rotary valve two stroke. Ring ding ding ding ding. Haha!

[@joeshenekji511]

Tarly, Is a Kohler engine better than a Briggs & Stratton engine. These engines are 10 years old on John Deere L 110s

[@rjcason98]

One more engine to confuse, the 2 stroke no mix fuel injection with 4 stroke oil in the crankcase. Found on some boat motors not lawnmowers

[@jpol3808]

Let's hear it for 2 ups and 2 downs. 2 cycle - 4 cycle. 2 ups 2 downs. Wooo. There's your dinner!

[@RandyDarkshade2]

It was common, and still is common for mopeds to use 2 stroke engines. I have a 1980 Honda Camino moped (Have to pedal it to start it, great exercise) which is two stroke, you have to fill the tank with fuel, then add "2 stroke oil" and on my camino the gas cap has a measuring tube fitted to it. I also have a 2011 Yamaha Jog which is also 2 stroke but it mixes the oil for you, it has seperate oil bottle you fill wgich mixes with the fuel automatically.

[@timmygilbert1371]

lmao , give um hell Taryl !