Simple fix. Just free the 6 plastic prongs one by one inside the cap. It slides right out on the top side of the cap. It’s a O-ring inside. You can buy a replacement at your local parts store.
Dealing with this same exact issue with my 2009 R6s after pulling the tank off to do my spark plugs. Must have loosened the most likely deteriorated o-ring when i pulled the hose off the nipple. Waiting on a new fuel pump o-ring to come in before I pull it all out to get to the smaller o-ring. I'll post an update if this fixes the leak 👍. For some extra clarity, that nipple is supposed to connect to the fuel pressure regulator return line. The plastic nipple is a separate piece from the fuel pump assembly and is sealed with an o-ring that often starts leaking over the years from what I've read online. You have to either replace the whole pump or pull the pump out and take it apart to get to the small o-ring and replace it. Make sure to also replace your bigger o-ring sealing the whole assembly to the tank too if you haven't already. I imagine that would turn into a much bigger more concerning leak if it's not in a reusable state. Update 1: new oring installed and will report back with results after some thorough riding. Update 2: I'm a daily rider and I've been checking for the leak after every trip. So far so good, so I'll say replacing the oring has fixed the leak 👍
@@nothingbutsmol same issue on R1, got a new pump unit and was too strong/ new for the old sending unit and blew the return wide open. Even with new O-rings and LOADS of superglue it still sprayed through. Sooo I ordered a new cheap ebay sending unit for $100 and looks/ feels legit but just came in mail and after inspection it's got no return nipple nor even a hole that I can stick one into. Thought it was just the Chinese junk but looked at oem on partzilla now and same style. Not sure what to do now lol.
@@eman85mph what sized o-ring did you use? I used a sized I.D. 9/16", I.D. 3/8", Wall 3/32" oring from an buta-n oring set I picked up at home depot(danco 200 assorted plumbing o-rings, #8 o-ring). Make sure the o-ring is of the right material too or the gasoline will eat it up. If you still have the old pump assembly, I highly recommend trying to refurbish it with new parts if possible instead of a whole new unit, only because our bikes are so old, new or more updated parts that supposedly should work can still cause wacky things like you've already experienced. If that that doesnt work the problem might actually be something else, like related to another part of the fuel pressure regulation system. If you don't already have one I would pick up a service manual and I like to look at "yamaha parts house" for part numbers and such. Hopefully this is helpful and you can get your R1 back up an running, 2006 R1 is my favorite and definitely want one someday 😉
Did the exact same thing with my fuel pump, I cut off those 2 plastic spikes, glad to know I’m not the only one. Hope you find a reasonably priced part or whole pump, might save you from travelling vertically 👍👌
Lo reparar recién! Desarme la bomba de gasolina y del lado de adentro tiene unas pestañas que las separé con una aguja de crochet mientras hacía presión para abajo, luego sale la pieza y ahí hay un retén. Lo cambié y SOLUCIONADO.
I ended up buying a new fuel pump housing, I had a feeling the plastic weld wouldn’t hold up, and a fuel leaking isn’t really something to mess around with.
@@MrSpeedyPete the relay is near the battery under the seat, if you are facing the front of the bike, it’s on the right hand side, almost under the passenger seat.
@@anthony_0501 Is it called the starter relay usually because I cant seem to find anything for a "fuel pump relay" for a 2002 r1 im just a little confused
