Join Date: May 2014
Location: Washington State
Your getting some good advice.
Have you tried the factory procedure of priming the pump?
I'd start there. I'd try it a couple of times by the book.
It must be in both manuals for a reason. Perhaps what you are experiencing is the reason. Don't know till you try.
In the manual there is about 20 pages devoted to diagnosing what would seem to be a bad fuel pump. Would be worth your time to download a manual and pick your way through it eliminating the other possibilities one by one.
I would try the carb cleaner method of keeping it running as was recommended.
I always use gas in a good very small pump spray bottle.
I fill it completely with gas to keep the amount of air in the bottle to a minimum. ( don't tell anyone as it is probably unsafe) I do it outside with a fire extinguisher with the pin pulled out next to me.
I keep 2 fire extinguishers in the shop.
I do it away from the house, and the shop out in my gravel driveway. If I lived in the suburbs I would have an empty metal container with a lid handy to set the be spray bottle in should something go wrong and a lid to smother it or contain it. Metal trash can would be good.
I also cover up with a heavy jacket and gloves when I do it. However do unsafe things at your own risk. I'm in no way recommending you do anything you feel is out of your comfort zone.
Especially things that could lead to your own death should things go terribly wrong. I've never tried it with carb cleaner and that will be my first go to in the future. However I can't comment on how well that works as I have always used gas. But either should accomplish the same thing. One sounds a bunch safer than the other.
So if it continued to run with me spraying gas as needed or carb cleaner as needed. I would consider that proof that the pump or injectors might not be providing what is necessary for the bike to run. I would then glance at the injector plugs just to be sure everything looks plugged in. I'd also keep in mind that there is a fuel pressure pulse damper on the rail too.
No idea how to check that?
I might next throw in a new fuel pump relay or swap it with an identical relay (on a x bike the accessory relay) to see if the problem goes away and I would replace both the fuses associated with the circuit cause they are so cheap. (see manual) Don't forget to really inspect the plug that powers up the pump, under the tank. Maybe it never got plugged in all the way and has become damaged by arcing internally and is showing up just now. There is more in the manual to try.
If the relays etc did not fix it I would figure out how to rig up a pressure test without the required vic adapter. Harbor freight has a cheap auto fuel pressure gauge that you might be able to butcher to make it work on your bike? (Don't forget to ask around for 20% off coupons). If you buy a Harbor fright gauge you might want to hook it to your car first to be sure it works as advertised, before you start cutting it up if that becomes necessary.
Or just call a dealer and haul it in on a truck and have them do just the test. That can't be too expensive and it will tell you if the problem is really a lack of pressure or not.
If it turned out that it was a lack of pressure I would pull the pump and inspect the pump inlet filters to see if they are clogged. No gas in, no pressure out.
At the end of all that and the other tests in the manual, if it still wasn't running I might consider buying a new pump. But that would be down the road.
Right now you are assuming it is a fuel problem and it could be, but it could also be electrical, clogged filters or a connection or contact. Stuff happens.
presently owned bikes
2014 XC 8 ball that no longer stalls
1993 HD fxrp
1982 HD Sturgis
2009 Honda rebel
1991 gl1500 A w/ Champion Daytona 2+2 sidecar.
"God works both good and evil in a mans' life and you deal with it as best you can" Somebody..
Last edited by Joe_; 01-26-2015 at 02:17 PM.