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How restrictive should the fuel filter be? Should I be able to blow through it easily? Or should it be Somewhat difficult?
Charles |
It should flow fuel pretty easy, air is a different story, especially if it is a paper element, and it is wet. If in doubt, replace it. Is the pump pumping fuel?
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The pump does always make the pumping noise and obviously sometimes it flows fuel. I’m not sure if it’s making the noise but not pumping sometimes, or if that is even possible. It could also be an intermittently firing fuel injector, an intermittently clogged filter, or maybe electrical connection to injector.
Filter appears to be cellulose inside. Charles. |
Have you tried running a diagnostic test to see if any codes pop up (turn the key on, off, on, off, on) ?
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I haven’t. I’ll do that in a hot minute, but I’m thinking I am closer to finding the problem.
What’s the trick to releasing the electrical connector on the fuel injector? Charles. |
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Guys, I believe I solved the mystery!!
The bike sat a lot. I saw junk in the fuel filter. I blew it out in the direction of flow, and small chunks of varnish came out. https://advrider.com/f/attachments/f...-jpeg.2654837/ There are still more chunks visible in the filter and I can reach in with a pick and manipulate them but can’t get them to come out. Note that these chunks came out of the fuel injector side of the filter. Charles. |
Update. That’s not varnish. It’s glue. I cut the filter apart just to see the internals, and the glue that held it all together crumbled into a mess. So... we may want to consider finding an aftermarket filter, if the OEM is going to come apart like this.
Charles. |
Ethanol Strikes Again
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The stock filter is also extremely restrictive. The end cap of the filter is almost an interference fit with the outer casing, vastly restricting fuel flow. That’s why it was so difficult to blow through. I’d post pictures but the forum is broken. Pics on advrider thread if you want to see.
Charles. |
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Hmmm, that filter could have been defective from the beginning and I never pushed it hard enough to cause any problems. I just rode the bike to work and back, a total of 15 miles.
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Yeah I put 1300 miles on in two weeks. I ride a LOT. :)
I ordered a new filter and also some fittings so I can bypass the filter if need be. I’ve got a trip planned thanksgiving week and I need the bike to be fixed before this Friday. Charles. |
At any rate Russel, I don’t blame you at all. We’re good. This kind of stuff just happens. Fortunately it looks like it’s turning out to be a ten dollar fix.
Charles. |
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