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- เผยแพร่เมื่อ 29 ก.ย. 2024
- For the CRF450R (2009 to 2016) and CRF250R (2010 to 2017).
This mod cures the flameout issue on the CRF450r and it also cures the hard cold starting of the CRF250r. Enjoy!
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Thanks for watching!
upallnight91@hotmail.com
2009 2010 2011 2012 2013 2014 2015 2016 2017 09 10 11 12 13 14 15 16 17
OMG!!! Totally fixed the issue I was having with my CRF250!! Awesome video, thanks yo!!!
Yes Mahm!!! Glad that worked!!!
Hey man. I have a question u might have some killer insight on. I have a 2004 crf450r. Been having start issues. So I changed the stator and coil and cdi. Well when I went to change the stator a pin came out of the crank case when I started to take it off. Looks just like the pin u pulled out to get that off. So when u got it all back together it won't fire. When I kick it spits a flame out the exhaust. Like maybe the decompression valve it staying open when firing the spark. Idk anymore. I'm so at a loss anymore. Anything kind of insight from anyone would be amazing. And yes I checked valves they were right in spec. But after seeing it video and that pin I was like damn. That's the pin I found. I'm pulling cam tomorrow to check everything out.
Yes, I think you are going the right route. Pull the cam and check that the auto decompression is working well and everything. Another place that pin can come from is the lower rod bearing rollers, lets hope its not from that though, as that would require a new crankshaft. Also check the exhaust rocker arm bearing, it also has rollers inside that bearing that can excape
@UpAllNight91 dude thank u so much. I will check those area out. It's super thin so not thinking is a crank needle bearing at least.
There is also a simular pin in your oil pump driven gear (white plastic) under your flywheel
I lost the little pin where can I buy it I have a Crf450r 2012
www.partzilla.com/product/honda/91101-001-030?ref=f67e1c1fe89e195457c71980a6005159c8af4253. There ya go
@@UpAllNight91thanks ❤
could you or someone in the comment section tell me how to put the cam back in place? I am trying ALL I can but I just don't remember how to. Chain tensioner is off, so there should be no tension on the timing chain. The Chain seems too short!? even tho it was used on this bike with no issues last time I did top end. What the fuck am I doing wrong? Thank you for any replies :D
What year bike?
@@UpAllNight91 It's a 2009 CRF450r. I mean, got it figured out but, took me like 4 hours ;-; Can you give me some pointers? Thank you + love you
@@cubiversewastaken Your welcome! I was going to suggest first making sure the chain didn't get kinked at the lower crank area. And if you slide the left side bearing on the cam close to the cam gear it allows the cam to sit deeper in the head when putting chain on it. Once the chain is on it then slide bearing down into its proper seat. Glad ya got it!
I bet that was tough to figure out. Thanks man👍
It was surely a head scratcher, till I actually heard it while it was flaming out.
bro i didn’t even know this was a problem but i just rebuilt mine and it was doing this bad i really appreciate this man
Yes sir! Was yours the 450 flameout or the 250f hard starting
actually it’s a 2009 crf250r carburetored and i’m about to try it because even tho is not fuel injected it dose the same thing
so it’ll start with in 1-3 kicks but when you blip the gas and it’s cuts off sometimes and itll take15 to 17 kicks to start back up only but i couldn’t figure out why it did that till i watched this
@@1upwelding ahh ok. Yup!
if it fixes mine i’ll let you know because that means it works for the 2004-09 crf250r also
Great info and video!!!
Thanks. That was a oldie, I think I did that one in like 2012 or something lol. But that surely was the fix that held the test of time. I remember at the time everyone was trying everything and dumping money into them bikes for the fix but that actually was the fix.
So this will fix my 2012 crf450r ? Cause I’m starting to have that issue at idle I give it slight gas and shut off instantly I legit just replaced fuel filter and injectors thinking it was that.
Hello. I would try doing this mod and also try a new spark plug. I have seen spark plugs cause stalling issues on these bikes as well. It will look good but replace it anyway.
Nice tip, did you ever tryed to install the cam without the decompressionlever?
Thanks. I have tried on a few different bikes, it makes it very very hard to kick past the compression stroke. And can even break clutch covers around the kicker
Does this work on a 07 model
The idea does work on the 2007 however it does have a totally different auto decompression system so the way to go about it will be different for sure.
Hello mate wondering weather you can help my nephews yz125 96 is smoking a lot and is not running great at low rpm there’s no power when you reach higher rpm it has power and runs better I’ve cleaned out carb/jet’s repacked silencer I’ve noticed we get a lot of black oil coming out of valve cover on the side of the engine I have cleaned the valves too the carb is a tmx 36 any ideas would be great I do have a video of it running if you want me to send it to you by email or something 🤙🏻
Hello. Have you checked to make sure the valves are opening and closing as they should? Check that it's not getting stuck in the open position?
Yh valves are good also I’ve been told it could be crankshaft seal
Oh for sure can be right side crank seal. Totally over looked that. For sure I would check that.... duh, on my part lol
😂 I’ll order one in thanks 🤙🏻
We’ll check the idle screw and the carb first always
my crf 450r 2006 doesnt even have this decompression part in camshaft LOL. No wonder it has such problems
In 2006 they used a different design auto decompression. Still did the same thing just differently
@@UpAllNight91 you mean it dont need that decompression mod part at all?
@@tosijjaa_ that bike in them years also suffered from the decompression kicking back in during low rpm throttle tip in however its a completely different system than the one in this video. The same idea applies though, removing some spring pressure to cure it. But the process to achieve that will be different than in this video
@@UpAllNight91 allright👍 I assume you mean valve spring stiffness adjustment?
@@tosijjaa_ not the valve spring, the auto decompression return spring