Keep it...ride it and make videos about the the bike , about the repair and maintenance . A lot of guys run the older bike and its cool to have new videos on them . That bike looks like a gem .
Best all around bike ever. I have had a WR 426 and 450. Trail riding, MX or street bike they are fantastic bikes. The ones we get in Spain are street legal.
I now live in Spain too and want to buy a WR 450 as well. Is it allowed to ride it with the full horsepower on the street? In Germany we have to tune them down most of the time :/
@@michaelnutzel2226 The old 426 had a throttle stop and a gray wire that could be cut to give full throttle and full power. The new 450’s are full power from the dealer.
Would have been fun to strip the pump, probably just a seal or stuck valve. Also could have just pressurised the tank a bit from the cap breather. That's a clean bike though! 👍
I got a non-running 2009 WR450f on the cheap. Previous owner broke the carb when trying to remove it from the bike to clean it. I'm looking forward to a Lectron carb and some other goodies 🙃
This is why I’m so partial to carburetors, so much simpler to troubleshoot on the go. And before you say anything about jetting being a pain in the ass, understand that I’m talking about MODERN carburetors (Lectron, SmartCarb, etc). Totally worth the price for ultimate reliability.
had one. I became president of the tippy toe club. my mechanic warned me, but he still cut the grey wire for me. it went really fast. put a snow sled on it. couldn't get back on it in the snow once it fell over, b/c it now sat 10" higher than before. sold it for what I paid. bought an older 2009 KTM250 XCF thumper. fortunate to have survived to tell this story.
it would be good to see a fuel pump disassembly vid to see why it failed and can it be cleaned or repaired. im glad i have an old bike with a carb, the fuel injected components are so expensive. thanks for the vid.
Thanks for demonstrating what the proper pressure should look like. I was hoping you would. I have a 2012 and your video will be helpful for reference if my fuel system fails. Thank you!
Just bought the same bike under the same circumstances, VERY cheap, turned out to have the opposite fault on the same part, the fuel pressure regulator was blocked up somehow, causing the injector to over-fuel as a result of too much pressure. Would start and run for 10 seconds before bogging and stalling.
I don't think testing the fuel pump so close to the battery was a good idea 😬(6:05). Also, quantum fuel systems makes some good aftermarket fuel pumps and allballs have some fuel pump rebuild kits fyi.
I just bought an 11 with the same issue. Bought a Amazon pump and quantum pressure regulator, rebuilt the pump and it didn't work. New Yamaha OEM pump and it's running again. It's more expensive but well worth it.
Seems like a lot of monkey motion to avoid buying a $10 fuel pressure gauge. Also, the likely problem is something stuck in the pressure relief on the pump. You might want to have a look for anything obvious before plopping down $360 for a new one...
I thought so too. I think any car fuel pump repair or service expert may able to fix it, because those things are way more costly & people would rather have them fixed than changing them outright.
@@Andy-co6pn it is. I just bought a non running wr450 as well. I rebuilt the fuel pump assembly with new parts and put a new injector in it. It runs like Godzilla now
Hello again friend, you know that my motorcycle is jerking, would you know where to start checking? Already checked the spark plug and fuel pump and they are OK, it is a wr 450 injection, by the way, excellent explanation since I don't know anything about this type of injection motorcycles and your video is great to start learning the system.
I had a starting issue with my 2012 WR450 similar to this one. For anyone watching this and want to save $400 by not buying a oem Yamaha fuel pump. He shows at 4:44 that the fuel pressure regulator is spewing gas. This regulator should do this when the pump is over pressurizing the system. Therefore it should not have any fuel coming out on primming. You can buy aftermarket fuel pressure regulators for around $40. That is what I did and my issue is fixed. This will not fix a bad pump but will save you from dumping a ton of money in a fuel pump you may not need. I AM NOT A MECHANIC.
@Cannavis Is the aftermarket regulator integrated into the pump body? Which can be unbolted from the pump body and replaced? Or did you have to install a generic inline regulator (similar to a fuel filter on a carb bike) and stuff it somewhere under the frame and plastics? Also, I assume it's a Chinese knockoff regulator...how long will that really last?
@@drott150 at 4:44 you can see the black circular part dumping fuel back into the tank. the white portion you see in the middle of the black regulator has a lip on it, The black portion is a clip. If you slide the black portion off the white tab on both sides the regulator slides off.
@@drott150 also the regulator i bought is American made and has been working fine with 0 issues sine i replaced it. it is attached to the pump body which can be seen at 4:44 I bough a USA Quantum Fuel System OEM fuel pressure regulator from amazon
@@Cannavis Excellent info, I really appreciate it. I just bought one of these bikes yesterday (a 2014). It runs great, but I do want to understand its F/I system and how to maintain it without breaking the bank or doing dumb repairs where you just replace everything instead of what's actually needed. Looks like you cracked the code bruh! Thanks again.
Good information , very nice and thank you. You make really good project bikes so keep it and built it up with top quality after marker parts as you usually do.
Yeah, because everybody has an extra tank and pump and an air compressor laying around for just such an occasion...or you could just buy a cheap fuel pressure gauge. LOL...
Get it running and working really well and flip that sucker! Make a really good bike for someone that can't afford the ridiculous prices of new bikes. But to keep it and put more into it, idk, then when you go to sell you have to outprice some people to get some of your money back. And the newer generations seemed to make big improvements. At least according to youtube, haven't rode them.
Good troubleshoot video. Why do they have to put so much complicated shit on bikes these days? If it aint broke don't fix it. I'll stay with older simpler bikes thanks. They are just as much fun. However it was an interesting video. I did learn several things .Thank you.
i have a 2012 WR450, purchased brand new in 2017 luckily. Fuel injected and mine will start and run for about 20 seconds and die. thought it was bad gas, changed it all and still same result. any possible things to check for? bike has roughly 70hrs give or take.
There is always one of you in every crowd, the battery leads are isolated from any exposure to fuel it's a basic design feature of any pressurized fuel system.
@@robh3267 And there's always one of you in every crowd. Anytime open liquid gasoline is being spilled and literally sprayed like that and electrical switches and motors are being switched on and off? The bike should be outside well away from the house. And at a very minimum a garden hose with a sprayer nozzle should be right there by your side with the water pressure on. And preferably with a CO2 extinguisher present to help put it out quickly without using water which is less effective at dousing gas fires (especially after the plastic tank melts and dumps however much you have in it, which should be the bare minimum amount needed). And if you think internet safety nazis are annoying, I agree stupid ones are. But in this specific scenario, I'm telling you he's putting himself and his place in grave danger. Don't ask how I and many other old guys learned this the hard way.
