How To Inspect and Replace 2 Stroke Motorcycle Reed Valves
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- Опубликовано: 27 июл 2024
- 2-Stroke Reed Valves:
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Inspecting and replacing the reed valves on your 2 stroke motorcycle is easy. Reed petals are a high wear item and should be inspected more often than not. In this video, Chance shows how to properly inspect and install new reed valves found on 2-stroke motorcycles.
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Great explanation and VERY informative for a 4 stroke CB750 owner working on his first two stroke!!! Thanks Soooo much guys!
Glad you found it helpful! Your views and feedback mean a lot.
I'm picking up a blaster in a week and I'm sure I'll be watching a lot more of your videos😂 first time 2 stroke owner
Making two strokes great again ...
Very good explanation of reed valve function and operation! Great job!
I just spent almost 600$ on Rocky mountain atv, I'm going to be homeless because of you guys 😂😂
*Seth Swartz* Think on the brightside though, that '99 YZ125 is going to be looking cherry! Thanks for watching and shopping.
@@rmatvmc it definitely is! 🤙
For me reed valves are often overlooked when its comes to maintenance. Every time something is wrong with my bike, the first place I look is the carb
Another great video. Thanks guys
Thank you for this video. It was just what I needed
Very good information thank you for sharing
Best video I've seen yet on reeds for basic knowledge thanks my dude 🔥💯
Nice bro mine has gaps i just checked thanks for the knowledge
thanks guys spent alot of money on your products this year for racing and everything holds up great as always now its time to dial in the sons 2 smoker=
Great video. Keep them coming!! Thanks!!
Thanks *Cory Tryon!*
Thanks for sharing this with the world
Great job from your fans at How2Wrench. Added to our playlist for everyone.
Thank you!
@@rmatvmc If you ever like to team up reach out @ 602-345-0432
Very informative, thanks.
thanks! My 1979 yz80 is refusing to start so I will double check the reed valve as you suggest.
Excellent video, my ktm sucked a Reed valve into the engine yesterday and left me miles back in the woods. I now want the best reeds I can get.
Is this where all broken petals end up ? And sometimes it blows the motor sometimes she just gets burned off ? Lol
i had a boat motor that sucked a reed petal into the motor it took me forever to figure out the problem , i replaced it and it ran perfect , i used the motor for years and never took the motor apart to find the piece that it ingested ..
Thank you so much young man. God bless you brother.
how stiff should reed valves be? I have a '94 bike that's made it this far without a rebuild and now I'm going through it and the reeds are very hard to bend but they seal completely fine and don't seem to be brittle necessarily. I have the fiberglass ones shown in the video.
Really good, I'm going to check mines soon.
*Ulises gonzalez* It's some good preventative maintenance to do. Your bike will thank you! Thanks for watching.
Totally true! Thanks for your reply.
Hows it going man what mod do you have to do to install the vforce4 on a 98 yamaha banshee
My yz125 idles but when I put it into gear I can ride it for 200ft before it’s sputter and stops, could the reed valves be the issue? I just did a carb rebuild and top end rebuild.
My rm85 hesitates in almost every gear but if I let go of throttle and then gas it again the power is there but feels like it could be more gets better as it warms up , I’ve cleaned the carb over 5 times making sure I’ve got everything , checked my reed valves and one of them has a slight gap for sure isn’t sealed like the other one could this be the problem or should I start looking to see if it’s something else
I have a 2000 cr125 with v force 3 reeds and I’m trying to make it run the best for woods would v force 4 reeds give me anymore power?
Hey so I just installed after market boyesen reeds there’s no light on going through it but if I look on the side I can see a tiny bit of light going through it on both sides are they supposed to be like that ? Or do I gotta take em back off and flip em
which reed valve is best of boysen and vforce for most power?
Any after market options for a 1984 Tri Z 60 CC Yamaha 3 wheeler?
Hi I’m doing mine on a cr125 and a mate said to put a bit of gasket sealant around on the new gasket both sides of the Reed block do you think some or none comments welcome please ? :)
1979 Yamaha g-1 two cycle golf cart,fresh Bore 4th over ! Rubber intake And reeds are stock! Yamaha Banshie May fit?
Great video and info! Question is, when replacing reeds, do you need to change the jet in the carb? If so , how do you know which size jet to install?
I’m hoping your new to dirt bikes because what you said is hilarious to me if you’re experienced. No, if you’re replacing your reeds or even upgrading them you don’t need to rejet your bike. Also, you say it like “jet” singular when there are 2 jets in your carb (main jet and pilot jet)
I'll try this one more. I have a 99 Polaris trail boss. It will not start it's getting fuel is getting spark it just won't fire. I noticed fuel dripping out of the front of the motor where the exhaust is. I pulled a little strings off the exhaust old exhaust part off and it was full of fuel. Is. that because of a faulty reed valve. And could that be why it will not start. Any help would be great thanks
do you need to tune the carburetors for different ones?
Nice job
I have a 2008 rm 85 small wheel everything been fine with her until now .. im losing MAJOR power plus a little bogging issue around mid/full throttle! CORRECT ME IF IM WRONG BUT IS TIME FOR NEW REEDS? B/c i cleaned my carburetor 3 times already
My reed bolt on my bike rounded off how do I get them off the changes reed because I have problems start the bike it little yamaha aerox yq 50 reg 2004 looks like a standard part can help me please
Will not haveing the reed valve stoppers cause hard start ?
Will changing out the reeds require me to reject the carburetor
Will a bad reed valve cause lack of compression?
Do they have to go in a certain way?
Just bought a kx250 and it’s got stage 3 vforce reeds, didnt even know it had them till a few minutes ago but cool I guess idk anything about them
pull them out and inspect them, how is the bike performing?
Michael Kopytek sold that bike was pretty quick though with the mods it smoked my buddies Ktm 300
Great video. What’s the difference between a reed valve like VForce and a rad valve like Boyesen?
Both work very well. Ive used both. They both gave more power over stock reeds. I cant say one is better then the other. I like both types.
Reed valve vs. rad valve, two different animals.
There aren't many good videos on choosing between the two unfortunately, lots of bloated opinions with no data to back them up
Hi mate! My cr250 is sometimes hard to start (8 kicks'ish) also on idle its kind of revving on and off quickly (when hot) do you think this could be the reeds? They havnt been changed in well over 5 years
Did you find out what was causing your surging idle? I have same issue and my reed valves def have small gaps where I can see light through. I hope I can just swap new ones in to fix my issue.
@@SkinnySkinch hi mate, it turned out the waterpump and impellar shaft was knackered. I sold the bike last year
Do they need to be changed or up graded of you do a small bore to fix a scratched or worn cylinder, thanks for the vids
Reeds don't necessarily need to be changed when doing engine modification, just inspected to make sure they are sealing correctly and not damaged.
Reeds don't necessarily need to be changed when doing engine modification, just inspected to make sure they are sealing correctly and not damaged.
what if mine dont have any screws how do i replace them
Does this make your power band kick in faster and also different ones make it come in smother ?
The biggest symptom of bad reeds are a bike that's hard to start but overall performance will also be down. Definitely check yours out to see if they need to be replaced and are contributing to your bike not running as well as it should be.
Rocky Mountain ATV MC I just want my power band to kick in stronger and shock me
@@luzdiazdeleon6088 maybe more CCs is in order? No replacement for displacement!
i have a king cobra 2012 50SR are the reed petals are universal?
Machine-specific means nothing is universal. If you’re unsure, simply buy petals and cage as an assembly.
Can bad reeds cause low compression and do you need to change jetting when you go to aftermarket one
Bad reeds will not affect the cylinders compression and you should not need to rejet after installing aftermarket reeds.
Hello.
I have a question to you. I have a Yamaha DT125r from 2000. It's a road bike with gianelli exhaust for the rest orginal. Do you have experience with v force reeds? Does this make any difference?
Thanks from Michael
Hi just want to know can it cause spark plug problems if youre reeds is damage
Bad reeds shouldn't affect your spark plugs directly. Usually a sign of bad reeds is hard starting and backfiring, and a noticeable drop in power. With that being said, a bad reed will throw off your air/fuel ratio and could have possibly caused your spark plug to foul out or run too hot if the reeds have been bad for a while.
Hope this helps and thanks for watching!
A leaking reed valve can lean the A:F mixture ratio until either the piston cracks or it won’t stay started. Spark plug insulator may bleach but being made of steel copper nickel and ceramic, it’s much tougher than the rest of the motor.
Rocky Mountain ATV MC can a bad reed cause a bog ?
Marlo Monteiro yes it can cause bog. Happened on both my bikes when the reeds went
No just check for hight on reeds the plug will tell the story on the reeds to lean or to rich
I have a 1999 Polaris trail boss 250 will not start.
Can you replace this while still in the bike after removing the carb?
The reed valve body will need to be removed to get to the reeds on most bikes. It's not much more work if the carburetor is already removed.
I should probably replace the body and all huh,? What's a not so pricey unit I can get
Is it okay if a little gap is in between the reeds and the body?
A little gap is totally normal and nothing to worry about. When the engine is running, the vacuum created in the crankcase will seal this small gap.
Do you guys sell Reed valves for a 1975 WR 400 Husqvarna?
Sorry we do not sell reeds for that bike.
I have some questions.. what symptoms are signify bad reeds. Are there any adjustments. Do they gradually get weak or do they just quit working?
Where are they located?
Does every 2 stroke have them?
2 Strokes For Life
Do you have to take the engine apart to replace the reed valve
You only need to remove your carburetor to get to the reeds.
Do u think bad reeds can be causing an extremely high idol from the get go. I inspected the whole carb and can't see anything that's wrong even replaced throttle needle. And also messing with the air screw does nothing. Someone please help
Usually bad reed valves will cause a rough idle. But they are pretty easy to inspect for damage so it can't hurt to take them out and see if you find any gaps, chips, or cracks in your reeds.
Could be a bad crank seal.
well i drove 100 km whit no reed valves cose i checked and there was notging
What about flipping them?
I’ve done that worked for me.
How to install.. where so useful
If the reed valves are
damaged they will need to be replaced
so the fact that I can see directly through mine is bad right lmao
Haha yeah you'll want to get those replaced!
the sound is not good I am quite disappointed
Engine. You mean engine every time you say motor
Thanks for the tip!
Either you don't know how to install a new reed cage or you don't know how to put down a correct title.
What are you referring to? We show how to replace reeds starting at 3:02.
Guy if u pull them out n they look good...replace them anyway. If u can't afford 2... look for another sport cuz there cheap
You never showed how to replace! Waste of my time
You just take the pedals out and put new one in
No you don't, maybe if you have Boyesen and after the screws are removed maybe BUT,,,He doesn't tell you a Vforce 3 is a two piece cage and that you need a tool (I used a credit card) and you have too firmly press it between the reed and the outer extended part of the cage to unlock the tabs then you have to push it apart slightly then do the other side and then it comes apart.Then remove the center retainer for the inner reeds. Also when installing the new reeds you make sure to install them with the curve towards the cage (new reeds have a slight curve that needs to be toward the cage for better seal). You also have to make sure when putting the cage back together that the part numbers on the bottom are on the same side like they were before. A first timer will not know any of these things.
Ofcourse u didnt ccover the stainless steel reeds my cr85 has, great tutorial didnt help me at all
I've never seen a CR85 with stainless reeds in it. Plus the inspection of them is all pretty similar for all types of reeds. Sorry it didn't help much!
2 strokes are just junk! My rm 85 was just rebuilt and still lol doesn’t start and has no compression
You didnt do something correct then. Check your ring endgap, check of your piston has too much play, check your head gasket. Re-hone the cylinder.
Joseph Worthley I found out my problem it turns out the cylinder was messed up it had 2 gouges that I thought were for oil but it turns out something was drug along the cylinder! But thanks man
Had them all my life no isues. Cr 250s to 73 74 75 kawasaki500 3 cylinder kawasaki f7 f9s yamaha rd 400 the right mixture the right ride husky 250 never. Had piston issues still running still love me.ase much ase my wife give them love and the right ingredients follow going to kick my elsinore over and blast through the woods 4 to one mixture works fine
My mesage was lost sorry dont give up check reed valve carb jets gaskets
And definitely your crank seals see if they have sighns. Of leaks left n right good luck
Should I use RTV Silicone on the reed gaskets. ??
Thank you
You shouldn't need to use any sort of gasket maker or sealant on the reed gasket. Some people will put a small layer of grease on either side to help with the gasket coming off in one piece next time you need to disassemble it.