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Found 19 results

  1. Went out on my 2018 fe501 this morning and got a half mile from the truck, engine died. Fuse 1 (fuel pump) and fuse 2 (not sure yet—haven’t gotten home to look in the manual) blown. Replaced both with the spares, and only got 50 yards the second time. The bike has 25 hours on it. The only electrical issue of any kind is the back of the fender that holds the license plate broke off 10 hours ago and ripped the wires apart, leaving my lights not working, but my brake light and front blinkers still do. I don’t have much experience with electrical stuff. I searched the forum and google several pages deep. Any ideas?
  2. Hi everyone, I am curently building my bike for light adventure riding. I am making a contraption that I would like to call a rally fairing. I am showing you what I have made so far. For the build; - oversize GPI racing radiators - oversize gaz tank - fuel pump - swapping the speedometer by a vapor - custom made bracket for fairing - fiberglass fairing/windsheild I have not adressed the wide ratio issue since I just completely rebuild the engine last winter. I got a 39 teeth sproket for highway speed. I have no experience whatsoever with fiberglass, any input would be apreciated. Thanks for the interest.
  3. I had recently started fixing a dirt bike on my own and i bought a 2013 Kx250F for a killer deal but cant get it to start. It has a spark and it has compression. i just cant get the pump to pump enough gas in the fuel line. Please help so i can get this bike back on track!
  4. Over the last year or so I've been having issues with the bike cutting out, and so far they have all seemed to be fuel related. The first time it happened, I pulled the pump and tested it for flow on the bench. It was right on the edge of being too little. I replaced the filter and that fixed the issue for the next 30 hours or so. Then it started happening again. This was right around the time, I normally do a full tear down so while I had everything apart I checked the what the spray looked like out of the injector, which looked great, and made sure the throttle body and everything was perfectly clean. I checked all the electrical connections of the injector, the fuel system and the ignition system. They were all good. As the bike had around 200 hours on it at this point, I figure it was worth it to replaced the ignition coil, and plug wire and boot as well as a new spark plug. Everything went back together, and not surprisingly it was still cutting out. I decided the 200 hour pump was probly getting weak so that got replaced next. However as you seem to only be able to buy the oem pump as an entire assembly for $300 I used a Quantum pump that came with a lifetime warranty. The pump fixed the issue and the bike became much easier to start. Now recently I was getting ready to go riding, and went to pour gas in the bike. I started pouring gas in and realized the gas was a darker brown color. Turns out my dad had poured gas out of a recently acquired project bike that had been sitting for a probably 30 years into that container. I drained all the gas out of the tank and filled it back up with new, clean gas. The bike had never been run with the bad gas in it. I started riding and it started cutting out immediately at higher rpm. I put in another new filter, but same problem. I would think this has to do with the bad gas that I put in but I wouldnt think any dirt made it past the filter without running the bike with the bad gas in it. Could dirt have really made it past the filter and clogged/damaged the pump or the injector?
  5. Please Help! First post, I usually just scour and search the forums, but I've read hundreds of starting issue threads and still haven't found any luck. 2013 KTM 350XCF has starting and running issues. I've taken everything apart twice and the only possible things left I can think of to do are flash ECU, swap voltage regulator, swap fuel pump relay, and maybe swap the injector. The details are below, and I am open/begging for help and ideas. Also looking for local (Cincinnati, OH) guys 2007-2020 KTM 250, 350, or 450 SXF or XCF that I would be able to borrow a few electrical parts off of for troubleshooting. Symptoms: when its cold I have to mess with the idle screw way low, hit the start button and make a tiny turn on the throttle then let off to start, (takes a lot of tweaking to get this thing going), then idle is way too low so you have to hold the throttle open and turn up the idle to get it to stay running, then when running the idle seems to move around a little and there is a terrible delay to the throttle when you turn it. It will NOT start when its hot. One other thing to mention, when trying to cold start, after an attempt on the button, if I wait until the fuel pump relay clicks off before trying again it seems like a get a better crank and shot of starting. Like it turns faster like this (seems like it turns slow/weak similar to a dead battery start) Things ive done (it ran like this when I got it before doing these): -leak down test looked great, but just to be safe I did a new piston and rings (cylinder looked great), -checked valve clearance (in spec) -replaced stator -previous owner had shop replace fuel pump and TPS, he gave me the old fuel pump so I believe him, -i replaced all fuel filters -set and adjusted TPS with meter -cleaned out the injector with a 9v battery -confirmed there is spark -cleaned ground connections -new battery (have it hooked up to a big battery for testing) -checked wires for cuts (only thing I found was a wire going to the gas light was pulled out of the bulb) -disconnected map switch -disconnected kill switch
  6. Today I was at the beach and I drown it fully with about half throttle. move so far: pulled plug, dropped oil, swapped oil filter, new oil and filter, removed air filter. I eventually get it running again but it sounds rough. I got it up to temp twice and dropped the oil again: creamy white shit as expected. I’ll keep doing the oil changes but this is my question: the fuel pump seems to keep priming every 30 seconds or so. why is that? It never used to and I’ve had to disconnect my battery. cheers for the advice in advance enjoy the sickening video and I hope it never happens to you. https://youtu.be/9CkuJAsVjQU https://youtu.be/nv5LpfpvJYI https://youtu.be/ChXwCGv0wmQ https://youtu.be/R978vSwDw5Y
  7. Looking for some help and advice.. Rode my yz450f -15 last weekend and in the middle of the training session it started acting weird. I stopped at the side of the track and the bike was bogging and cutting out, ran fine on idle but as soon as i gave it any throttle it "suffecated" had big flames shooting from the exhaust at decel. I thought it may be vacuum in the tank but removing the gas cap didnt help. Couple of days later i started the bike up again at home and i ran fine, rode a short ride up and down the street and everything seemed ok. The other day at the track it was acting up again right from the start, soo i called it a day and went home. Started the bike up again when i came home and i ran good..what da f#ck is going on. I started to check for damage cables and connectors but everything looks fine, i also measure the resistance on the TPS. I later read in the manual that the TPS must be calibrated with the yamaha FI diagnostic tool, damn it! Also changed the spark plug. I read some threads about guys having problem with the TPS and yamaha even changed the parts nr on the tps soo there must have been a known issue with it. After i got the tps back on the bike it ran even worse, ran on idle for like 5 sec them died. Changed the tps 1mm, and tried again. Bike ran better but still not perfect. I emptied the gas tank and checked if there is a filter in the fuel pump, couldent find any filter, but i later found a thread describing how to disassemble the pump and clean the filter. Actually got some sand and dirt in the fuel from my gas tank but it wasnt a lot. Next week im gonna hook up a power tuner to look for codes. I feel pretty sure it either the fuel pump or the tps or maybe the injector. Next time in the garage im going to try the following: - Clean injectors - power tuner, codes? - clean fuel filter in the fuel pump - disconnect tps and see how the bike runs Its obviously running lean and not getting the correct amount of fuel at throttle opening, I dont really have much experience with these FI bikes. Dont have access to the FI diagnostic tool so at some point my dealer have to set up the tps for me. Seems very strange to me that the bike works one day and the next is acting weird, am i missing something? Would really appreciate some help!
  8. I recently bought a 2005 gas gas 450, the fuel pump went out. Does anyone know where I can find one? Thanks in advance.
  9. I need help, ideas, thoughts, anything that might help me with the issue I'm having. I purchased the 2021 Beta 350 RRS just two weeks ago. It has already been back to the service shop and they replaced the fuel pump. Today I just purchased a brand new battery for it. #1 - went for short run (4 miles) and bike just stopped running. Engine light came on. When I tried to restart it,, it acted like a dead battery.. Pushed it home. The next morning it started right up. #2 - I had the bike just a few days, I forgot and left the key on and the head light remained on which of course drained the battery. Napa charged the battery up and tested it (yes they used the correct charger)., Bike ran great for 45 minutes and died again mid-ride, pushed it home again. #3 - Bike was taken to dealership, they diagnosed as a bad fuel pump, which they replaced. Brought it home, took it for a ride, it lasted 3 miles, then I stalled it going up a hill, tried to start it and it acted like a flooded motor, it would turn, but not start. #4 - Bike started this AM, rode 1 mile and then back, all good. Got home, put on gear and it lasted 1/4 mile and died yet again. Went and purchased a brand new battery and took it out again tonight, only to push it home for about 1 1/2 miles. Once home, I attempted to start, it turned a few times then just died again. Symptoms: randomly dies during ride. At times it will attempt to turnover, but just not start. Sometimes it dies and attempt to restart sounds like a completely dead battery. Sometimes it sputters a few times before it dies, other times it just simply stops running. Engine light comes on within minutes every time before it dies. So before I shove this brand new Beta dirt bike up the dealerships ass, and just go buy a Honda instead, I thought maybe someone on here might offer some troubleshooting ideas. Thanks!
  10. I've got a weird no start problem after cleaning the gas tank. I purchased a used 2013 this year and after a couple fill ups I noticed the fuel tank had some rust in it. It ran and functioned fine, but I had to take care of the rust. So, I cleaned the tank/pump and upon reassembly the bike won't start. I've confirmed fuel flow from the tank. The manual says the spec is 2.8 ounces after 5 pump cycles, and I'm getting about 3.5. I wonder if the injector could be clogged? Has anyone cleaned their injector? This is pretty baffling to me as nothing has been done to the bike other than removing the tank for cleaning. The only thing I can think of is injector, but if there are other ideas I'd love to hear them.
  11. I've been working on my yamaha WR250R past few weeks. Disassembled almost whole bike (engine frame, engine and forks stayed together), did a lot of washing and cleaning on the whole bike. Battery was removed, ECU disconnected, I wrapped the main wire harness that goes to the battery, ECU and relays into a foil to keep it away from water. Two days ago I started assembling it. Connected ECU, battery, switched on, but fuel pump didn't run as it used to after turning on and the red coolant temperature light is on. When I push the starter button, engine is rotating, but won't fire up as the fuel pump isn't running. I brought current to the pump and it runs. I also can't enter the diag menu on the tachometer. Any ideas what could be causing fuel pump not running and the problem with the coolant light and the diag?
  12. I just got done totally rebuilding a 2014 kx450f I mean all new everything on the inside of the motor. But now the bike won’t start on its own. But it will start with starting fluid and then it stays running untill you shut it off. Could my fuel pump be going out or could my ECU be bad? Iv had different people tell me different things. Bike also has a bit of a misfire when your trying to keep the throttle locked at a certain point. This is my first fuel injected dirtbike and I’m not sure what to check first and or how to check it. I put a lot of money into this bike and I just want it to run right.
  13. (backstory) Hello!! Yesterday I purchased a 2018 yz250f off marketplace. I normally don’t buy bikes not running but with what’s going on and the deal I got I’m optimistic it won’t be too bad (we’ll see). The guy claimed he was not mechanically inclined whatsoever and didn’t have time to wait for a shop ( 3-4 weeks) to fix his bike before the next race so he sold in order to get something running . He gets it rebuilt every winter by a reputable builder and the current build has 8.4 hours on the meter. (Problem) He was able to race the bike in the first and second race of the day. Come the third race he started the bike and it bogged off the line not wanting to run etc. I’ve attached screenshots of his conversation to his mechanic and his explanation of what happen etc. Basically he can’t kick start it but tried pulling it behind a vehicle and it will sort of run but will just bog if he tries to let out the clutch or even give it gas. ( sounds to me like fueling issues ) (possible solutions) So I’m not too familiar with newer fi bikes etc but based off my initial research I’d like to look into the following : - new fuel pump filter - possibly clean or replace the injector although the tool to to clean is like $170 - map sensor?? - fuel pressure sensor / regulator? I’ve read online that these are the typical fixes / reasons for these bikes bogging but I couldn’t find much reference to these parts as far as the sensors go. I saw one guy on the forums fixed it with a “fuel pressure sensor” but I couldn’t find the part online. this guys mechanic I bought the bike from says he feels it is a “map sensor” and i also couldn’t find reference to that either. If it’s not the fuel pump itself I feel like it’s just some sort of sensor out of wack but I’m not sure what sensors to replace / check because these newer bikes have so many. Let me know what you think I should do or any ways I can diagnose. Thank you in advance!
  14. I bought a non-running 2015 Crf450r from a guy who said that the local honda shop said it needed a new ECU. The bike has maybe 20 hours on it tops it is spotless. I changed the ECU and got nothing. Started to dig deeper and found out it had no compression. The nikasil (however it is spelled) had completely flaked off the upper third of the cylinder. Replaced the cylinder and put in a new piston still nothing. Swapped out the fuel tank in case the pump was bad, nothing. Checked all electrical connections and everything looks good. After a bunch of headache, finally got the bike to start by spraying starting fluid in the cylinder AND applying an external power source to the fuel pump. Once the bike starts up, it idles fine, revs fine, etc. However, it WILL NOT start without the external power source. Since finding this out, we have replaced the stator and tested all of the connections going to the ECU for a break or bad connection. Still nothing without the power source and starting fluid at the beginning. I am lost at this point as far as where to look next. Any suggestions or tips would be very much appreciated.
  15. Hey guys, i have a 2015 kx250 with a big bore kit which makes it a 270. I didn’t install it, it was on the bike when i bought it a year ago. The bike runs awesome and i love it. However, it’s really hard to start when it’s cold (it starts fine once it’s warm). So i did what everyone does and took it to the shop for valve work. The mechanic told me the valves were 100% in spec. He mentioned he pulled the tank off and left it off over night and when he came back the next morning, fuel was everywhere (bad fuel pump?). That seems odd to me since the bike is fuel injected. Also, i have about 5 hours of riding on a new spark plug and he said he checked it and it was chalky white. The mechanic also noticed that there was no fuel management system for that big bore kit (I’m not sure the make of the bb kit). I took the bike home and swapped tanks with my buddy and my bike did start on the 3rd kick compared to 15+kicks with my old one. So with all of that said, do you think my fuel pump is about to bite the dust? Could this be fixed with some type of mapping option (i know nothing about dirt bike mapping, but i know with a bigger motor it will need more fuel). Both of these are not cheap options but i need to get it fixed. Any help would be greatly appreciated!! Thanks and have a blessed day!
  16. My 2016 450 is surging under load, right in the powder band. Is that generally a pump issue? Changed fuel filter, unable to test just yet though.
  17. I've gone through all the threads I could find on replacing the fuel filter on the fuel injected models and haven't found a "proper" how to thread with decent pictures.. So, here we go. I didn't take video but took plenty of pictures. It CAN be done without removing the nylon hose... 1. You need to remove the 3 big clips holding the fuel pump + the one clip that goes around the part where the fuel filter is. I started with the fuel filter one because it was easy Then do the difficult to get to fuel pump one Then the easier two It should look something like this when you're done getting those unclipped: Next, I pulled the top cover on the filter off, not sure if this is necessary or not honestly Next pull the whole assembly apart at an angle. It takes some careful force but it will come apart even with the hose still connected And then you can see how dirty the fuel filter and fuel filter chamber were Next remove the clip holding the fuel filter on to the pump. You can use a screw driver or whatever, the new filters should come with a new clip New vs old. Crazy how dirty they get I did NOT show removing the pump, but if you're replacing it it literally just pulls out. Pull the old one out, put the new one back in, make sure it seats down fully. Install the new filter, make sure it's seated fully. Install the metal clip. I used a small socket to help push it down fully Now put the fuel filter chamber cover thing back in place. The new filter I got was bigger than the original but it still fit fine. Next start getting everything lined up so it'll go back together. This took a bit of force but wasn't too bad. When everything is in the right place it will go together easily so you shouldn't have to force it Once it's lined up, just push it together and all the pieces will snap together That's it. Congrats, you just saved $300+
  18. Help! I have a 2008 Husqvarna TE450 that has issues. I think I've narrowed it down to the ignition coil or ECU. But before I order these expensive and hard to get parts I was hoping to do more diagnostics. The bike shuts down when it gets hot. I'm thinking something shorts when it gets hot and temporarily fixes itself when it cools down. I've already replaced the fuel pump and filter so I know it's not that. Does anyone in Colorado, or ideally Fort Collins, have a 2008 Husqvarna and would help me swap parts to test my bike? I would trade beer or money for your help, of course. I've tried to get on cafe husky but i need admin approval. If anyone knows a cafe husky admin, could you try to get me accepted?
  19. I had a problem with my 2012 wr250r. It quit on me way out in the desert and would not start. It acted like it just ran out of gas. However, I could hear the fuel pump running. But after researching on the internet I decided to replace the pump as everyone had said, even if the pump is running it's likely a fuel pump problem. I didn't want to buy the $400 Yamaha fuel pump assembly, so I replaced only the electronic fuel pump. But, it still wouldn't start. So, I purchased a fuel pressure gauge and found out that I had no fuel pressure. It was the same problem as the fuel pump, Yamaha will not sell the fuel pressure regulator separately, but this time I could not find an aftermarket fuel pressure regulator. I searched all of the forums and as much as I could on the internet and found no information about that fuel pressure regulator. So, I just searched for fuel pressure regulators on Google in the images section and found one that looked like it. It was for a 2011 Kia Sportage. I ordered it from Rock Auto and it fit perfectly. The bike runs better than it has in a while. I'm just posting this information here so that if someone else has the same problem they know that it might not be the fuel pump. That fuel pressure regulator may have failed. It has a rubber impregnated diaphragm in it. The one in my fuel pressure regulator had ripped and it was allowing fuel to pass through basically eliminating all of the fuel pressure. It was a $30 part on RockAuto. I hope this information helps someone.
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