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Starts only while holding start button - Tracking down the cause Sat Dec 22, 2018 1:23 pm
LA_Cafe
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First post, and have been searching on this topic to dead threads.
I have begun the build of my cafe project, starting from the front (Redoing all cables, handle bars, new levers, starting electronics, signals, etc)
Now that I have all of this complete and have begun my gauge install with a BEP 3.0 I wanted to fire the bike up to see where I am netting out.
New battery, fully tendered. Starter relay isn't welded, all seems right.
When I pull the choke and crank the bike, it runs, but the moment I let go of the starter button, she turns off.
I checked all of the problem areas
- ECU (unplugged, contact spray, reseat)
- TCI (unplugged, contact spray, reseat)
- Tank connector, checked and double checked... seemed fine.... more to come
- Ignition switch is good
So after a lot of research with people that had the above check out I came to see that the LCD of most people's issues was inside the tank.
Took the fuel pump out, bench tested, and man is this thing loud... I am not hearing any of this when it's in the tank. So I put it back in, rewired everything, and opened the fuel sending line, and fuel was pumping out of it.
Then I decided to go to the base of the cause and disassemble the fuel tank connector
Come to find out that the float at some point of this bike's journey has rusted away and a previous owner just deleted it.
My current plan of action is to look at wiring the fuel pump up so that it gets a constant 12V when the ignition is pressed and the bike is on, and the 12V turns off if the kill switch it enabled or the ignition is turned off.
Any guidance?
Odd thing is that the bike ran before I took the tank off, although the tank did drop (butter fingers on my part, which I am wondering if it was the last straw for this shade tree setup)
I'd like to replace the aging wires inside the tank as well, are there specific fuel grade wiring that I should pick up?
I think this may be affecting more people and hope I can get this fixed and help more K riders out there.
![Starts only while holding start button - Tracking down the cause Img-8010](https://i.servimg.com/u/f89/20/01/18/18/img-8010.jpg)
I have begun the build of my cafe project, starting from the front (Redoing all cables, handle bars, new levers, starting electronics, signals, etc)
Now that I have all of this complete and have begun my gauge install with a BEP 3.0 I wanted to fire the bike up to see where I am netting out.
New battery, fully tendered. Starter relay isn't welded, all seems right.
When I pull the choke and crank the bike, it runs, but the moment I let go of the starter button, she turns off.
I checked all of the problem areas
- ECU (unplugged, contact spray, reseat)
- TCI (unplugged, contact spray, reseat)
- Tank connector, checked and double checked... seemed fine.... more to come
- Ignition switch is good
So after a lot of research with people that had the above check out I came to see that the LCD of most people's issues was inside the tank.
Took the fuel pump out, bench tested, and man is this thing loud... I am not hearing any of this when it's in the tank. So I put it back in, rewired everything, and opened the fuel sending line, and fuel was pumping out of it.
Then I decided to go to the base of the cause and disassemble the fuel tank connector
Come to find out that the float at some point of this bike's journey has rusted away and a previous owner just deleted it.
My current plan of action is to look at wiring the fuel pump up so that it gets a constant 12V when the ignition is pressed and the bike is on, and the 12V turns off if the kill switch it enabled or the ignition is turned off.
Any guidance?
Odd thing is that the bike ran before I took the tank off, although the tank did drop (butter fingers on my part, which I am wondering if it was the last straw for this shade tree setup)
I'd like to replace the aging wires inside the tank as well, are there specific fuel grade wiring that I should pick up?
I think this may be affecting more people and hope I can get this fixed and help more K riders out there.
![Starts only while holding start button - Tracking down the cause Img-8010](https://i.servimg.com/u/f89/20/01/18/18/img-8010.jpg)