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Fuel Tank Components

The link only sends me to the front page of the parts manual - appetizing as though that menu looks :)

Is the part you're thinking about in either of these two pics?

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That is the fuel pressure regulator, it also serves as a bulkhead for electrical and fuel connections. That piece controls the fuel pressure for the injector.
 
Awesome thanks.

I am wondering if that could be the cause of my dramas. Bike shop is still organizing a quote for me as my bike is not starting. The lady mentioned something about a fuel pump but she'll call me back.

Problem is that the fuel pump is a brand new CACycleworks fuel pump. So I'm thinking maybe that bad boy could be the problem. As when I was troubleshooting it before I took it in, there really wasn't much pressure coming out of the tank before it went into the throttle body.
 
Glad to help, another thing to check for is the flexible plastic lines in between the pump filter and regulator, they kink really easy if you're not careful when you install the pump assembly. Sounds like something to chase up before checking the regulator.
 
Have the shop run a fuel pressure test. This takes them about 5 minutes to do, and nothing has to come apart except the quick disconnect on the line from the tank to the fuel rail.

They just plug in a "T"ed line to a pressure gauge and look for 3.5 BAR.

This is also the way you check to see if your in tank filter needs changing.

berglsmerg is absolutely correct about the lines getting kinked when R&R'ing the fuel pump. Its really easy for the lines to get caught on the plastic protrusions into the tank from the EJOT screw castings.
 
So I pulled the pump out when I got home, the link was kinked and had in turn created a hole. Good going shop.

Is anyone not using the OEM stuff that comes in the tank and could explain/draw/take a photo on how theirs is setup?
 
No trying to hijack, but I'm having similar issues. Also had a cacyclwerks pump in the bike already.

viewtopic.php?f=7&t=18279

I finally gave up after having the bike apart three times and still not being able to determine the issues. On one of the tear downs I noticed that one of the in tank fuel lines was compromised, ie it was split. At the time I assumed that I had done this when tearing the bike apart.

Fast forward. I take the bike to the dealer as I'm flummoxed. Dealer says fuel pump. I ordered another cacyclewerks pump (130 beats the heck out of 500+ for the OEM fuel pump kit). Dealer installs and the bike starts no problem. Yesterday I took her out for a shake down run and sure enough coming off of a stoplight the bike loses power. Get a nice local guy in a truck to get me home, pull the regulator and sure enough one of the hoses is split open. Could it be that the pressure regulator isn't working and the pump is putting out too much pressure? Seems questionable that it'd be able to put out that much pressure to split a FI rated line. Since the new pump has been installed the bike seems to be idling high. I haven't touched the idle screw, but wondering if a build up in pressure is forcing extra fuel into the throttle body.

On my way down to Tennessee this weekend for a camp/ride and I'll bring more fuel line as I don't have time to get a new regulator if in fact that's the issue. Just not looking forward to trail side repairs if this problem continues.
 
gastone said:
No trying to hijack, but I'm having similar issues. Also had a cacyclwerks pump in the bike already.

viewtopic.php?f=7&t=18279

I finally gave up after having the bike apart three times and still not being able to determine the issues. On one of the tear downs I noticed that one of the in tank fuel lines was compromised, ie it was split. At the time I assumed that I had done this when tearing the bike apart.

Fast forward. I take the bike to the dealer as I'm flummoxed. Dealer says fuel pump. I ordered another cacyclewerks pump (130 beats the heck out of 500+ for the OEM fuel pump kit). Dealer installs and the bike starts no problem. Yesterday I took her out for a shake down run and sure enough coming off of a stoplight the bike loses power. Get a nice local guy in a truck to get me home, pull the regulator and sure enough one of the hoses is split open. Could it be that the pressure regulator isn't working and the pump is putting out too much pressure? Seems questionable that it'd be able to put out that much pressure to split a FI rated line. Since the new pump has been installed the bike seems to be idling high. I haven't touched the idle screw, but wondering if a build up in pressure is forcing extra fuel into the throttle body.

On my way down to Tennessee this weekend for a camp/ride and I'll bring more fuel line as I don't have time to get a new regulator if in fact that's the issue. Just not looking forward to trail side repairs if this problem continues.
Click to expand...

I don't know about the ca cycle works pump, but the stock pump has a spring loaded relief valve if the regulator doesn't bypass enough fuel flow to avoid over pressure.
 

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