How To Set Ignition Timing on a 2 Stroke Dirt Bike

Рет қаралды 76,326

Күн бұрын

Having the ignition timing set up and adjusted properly is an often-overlooked maintenance procedure that ensures your 2 stroke dirt bike engine stays operating at peak performance. In this video, Charles show how to set ignition timing on a 2 stroke dirt bike using the three most common ignition system setups found on todays off-road motorcycles.
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Пікірлер: 69

@Pictoru2 3 жыл бұрын

I do not own a 2 stroke, but i wanted to say that i love these videos about bike mechanics. Top notch explanations and editing! Charles & team, you're killing it! Hope you'll keep them coming FOREVER.

@garystrawbridge9283 Жыл бұрын

Lol

@JAVTROOPER 2 жыл бұрын

Rocky mountain is the best motocross organization in the world

@phillsmith5100 3 жыл бұрын

You don’t no how much you help me 👍🏻

@projectdirtbikes 8 ай бұрын

Thanks for the very easy to follow along video! Im going to go time my yz250 now! I have some destination issues I'm hoping this will solve.

@MagisMoto 2 жыл бұрын

Thanks for sharing very helpful

@ethanisaak5884 3 жыл бұрын

Love you vids man

@jeffboyd7780 10 ай бұрын

Excellent video

@chadebel2970 3 жыл бұрын

AWESOME THANKS

@DADSGETNDOWN 3 жыл бұрын

What year did they start to be able to do this stuff on ?

@AlexxMarssh 3 жыл бұрын

NICE UPDATE USING THE DAMN SERVICE MANUAL FOR EXMAPLES!!!! A1 top notch give the video editing guy a raise

@luisgigothynasgutierrez8805 2 жыл бұрын

I need help with the stop engine button where it connects in the left side my lil brother pull on it and all the wires are out

@WestHaddnin Ай бұрын

Damn it. I didn’t even know 2 strokes had timing issues.

@CrippyCream45 Жыл бұрын

I’m having trouble timing my 05 ttr le. I line up the cam sprocket to the notch and the flywheel to the case mark but when I turn it over it never lines up. I’ve done it over but the timing doesn’t seem to line up. Idk what to do..

@prakashgangurde9191 2 жыл бұрын

In 400meter race ignetion timing on magneto coil plate witch marking want to set sir

@Tizzypj 2 жыл бұрын

Does anyone happen to know if this is the same for a rm85

@Tizzypj Жыл бұрын

Anyone got a idea where I can buy a kit to time a husky wr125

@barkeep25 2 жыл бұрын

Got a yz250, Could retarding ignition timing cause exhaust knocking in expansion chamber aka pipe bang on decel?

@mikejoop9838 2 жыл бұрын

What ist timing for ktm sx 65 2006? I cant find

@andrewanderson2947 2 жыл бұрын

Would you be able to set up the timing when the engine is outside of the bike frame but fully rebuilt?

@elkku2934 2 жыл бұрын

yes of course

@harleyloco1853 5 ай бұрын

If the timing line on the flywheel is around 1 inch past the stator line. The woodruff key is perfect brand new oem crank. What would the issue be ? On a ktm 85 ?

@Mcnutts3 22 күн бұрын

I was also wondering this on my yz85 wondering if the keyway was machined in wrong spot on crankshaft

@richardgraham5252 2 жыл бұрын

1999 250 Polaris 2 stroke ignition timing on base stator plate

@user-ix7tg5dp4x 2 жыл бұрын

hello, tell me?yz250 2t 2013 I set the ignition according to the manual, the marks match, but when working at speed, the ignition goes to later, but it should be earlier, I disconnect the connectors from the carburetor, the ignition does not change at speed

@rmatvmc 2 жыл бұрын

The ignition should "advance" at higher rpm's. Are you using a timing light? Usually there are two marks on the flywheel to help you see if the advance is correct. Double check the manual. -Charles

@moddingdudes7055 3 жыл бұрын

Great video! I still am having problems with this 1979 Yamaha DT100F I have I can’t get it to run right. I’ve replaced just about everything in the carb including the float needle, seat, float, and replaced necessary jets to OEM and soaked the carb and sprayed it with carb cleaner and compressed air and it still doesn’t run right. I dont see any visible air leaks but they say to use brake parts cleaner or wd40 but you can’t test for air leaks if it doesn’t run right if at all and you can’t get it to run right if you have an air leak so a loop hole there… I’ve also replaced every single gasket and rebuilt my top end and it has 120 psi compression at a recommended 105 compression so that’s not the issue. It has the tendency to flood which doesn’t sound right ive messed with every single thing on the carb and it either gets too much or nothing at all. I’m really stuck on this one. Can anyone give me some advice? Thanks!

@devyn5919 3 жыл бұрын

when you say it doesnt run just right, what do you mean. does it try to start and then die, or nothing at all?

@moddingdudes7055 3 жыл бұрын

@@devyn5919 depends. Usually it will only start with choke and then die after a couple seconds. Then if I turn off choke and go wide open throttle it fires right up and then depends sometimes it’ll go for 30 seconds other times it’ll go for 5. I’m thinking it’s an air leak and I plan to pressure test it? But yes. It will run but not for long. It does not idle and is very very finicky and recently I’ve had tough times starting it at all. The carb has been soaked and cleaned throughout and most internal carb parts have been replaced

@devyn5919 3 жыл бұрын

@@moddingdudes7055 since it only starts on wide open throttle and choke, it sounds like it wants fuel. do you have the carburetor jetted correctly? if it can start then it will rev higher if its an air leak. have u looked for it on your ignition side crank seal?

@moddingdudes7055 3 жыл бұрын

@@devyn5919 I’ve replaced that seal as well. I think I’m gonna leak down test it for air leaks since the head gasket was giving me problems previously. I may have to give it a resurface

@timothyaguilar7727 3 жыл бұрын

Is It A Reed Valve Intake? Also Check The Intake Boot

@9.16TreeService 3 жыл бұрын

Does advancing the timing help throttle response? On chainsaws it seems to help with that? This is comparing apples to oranges I know, but was just wondering!

@rmatvmc 3 жыл бұрын

Yeah, the bike will feel a little more snappy down low, but you're going to sacrifice some top end power. -Charles

@bluegrassbassing3790 3 жыл бұрын

Just a heads up I don’t think that Cr85s have a timing mech and it’s just a bolt on as long as the woodruff key is aligned

@tobyhouston2514 3 жыл бұрын

i realize Im kinda randomly asking but do anybody know of a good place to stream new movies online?

@jermainericky7016 3 жыл бұрын

@Toby Houston I would suggest FlixZone. Just search on google for it :)

@vicentealan2684 3 жыл бұрын

@Jermaine Ricky Yea, I have been watching on Flixzone for since april myself :)

@tobyhouston2514 3 жыл бұрын

@Jermaine Ricky thank you, I signed up and it seems like a nice service =) I really appreciate it!

@jermainericky7016 3 жыл бұрын

@Toby Houston glad I could help xD

@ejb9545 2 жыл бұрын

Do you need the Kx at top dead center for the timing

@rmatvmc 2 жыл бұрын

No you do not need to be a TDC to set the ignition timing on your KX.

@ejb9545 2 жыл бұрын

@@rmatvmc Thanks

@ruielias6382 3 жыл бұрын

Great vídeo and great machanic 🔥

@rmatvmc 3 жыл бұрын

Thanks for watching! 👍

@ruielias6382 3 жыл бұрын

in our workshop we are inspired by you we hope one day to reach your level

@Garage-gs5ch 3 жыл бұрын

@@rmatvmc this is our workshop

@strokeNMyVeins 2 жыл бұрын

At 6:10 when you tightened the 1st screw I believe the stator slightly shifted on you that's why you were a hair off

@jasminechung4458 2 жыл бұрын

I had a quick question for you . I just rebuilt the top end on my kx250 2 stroke all stock . I hear what i believe is detonation ping when only in power band . Timing is standard ( middle line) brand new spark in it . Would adjusting the timing fix this ? If so do i retard or advance the timing? Opened up the head and there is no metal or anything to ignite the gas before it should . Appreciate the help thank you !

@josejoaquinamocaprile5634 Жыл бұрын

Maybe you are going to lean and that it is making the detonations, also it is important to measure the squish (base gasket).

@cinelli07 7 ай бұрын

Does a yamaha it490 have a timing mark?

@rmatvmc 7 ай бұрын

Yes your bike should have timing marks similar to the bike shown in this video.

@cinelli07 7 ай бұрын

@@rmatvmc Thanks

@ajrfreak1157 2 жыл бұрын

How do you get a two stroke to two step?

@rmatvmc 2 жыл бұрын

There are no 2 stroke dirt bikes with launch control at this time. Your best bet is practicing throttle/clutch control and maybe looking into a holeshot device to help your starts.

@ajrfreak1157 2 жыл бұрын

@@rmatvmc Is it absolutely necessary to bleed your fork oil before every ride.

@reedymc 3 жыл бұрын

Would timing affect how the bike revs with a fast hand full flick? Most bikes being set up for lower grade fuels. To make it fire better with higher ron fuel, would you need to advance or retard timings?

@jannep6772 7 ай бұрын

It reacts to your throttle better with advanced ignition timing. But better over rev with retarded ignition timing. You should advance the timing as then the higher octane fuel will burn earlier. Higher octane fuel burns slower than lower octane fuel.

@dustinwood802 3 жыл бұрын

TIMIMG?

@rmatvmc 3 жыл бұрын

Good catch!

@danb37 4 ай бұрын

As far as adjusting your timing to compliment your mods....easier said than done. I have a 97 cr80. The stator is fixed and completely hidden underneath the magneto rotor. Wtf?

@adamoconnor3860 3 ай бұрын

The old cr80 stator isn’t adjustable, the bolt holes are circle rather then oval

@danstevens2204 3 жыл бұрын

A tool to tell you tdc 😂

@FreestylePYRO1 3 жыл бұрын

They sell a "dirtbike" tool for eveything Haha

@rmatvmc 3 жыл бұрын

That's not what the tool is for. The spark needs to happen before the piston reaches TDC, that's why the tool is used to set piston height before TDC. Sorry if that was confusing. -Charles