[mgordonvegas8]

Well my daytona finally fired up last night after being quite the head scratcher. I am a reasonably experiencing motorcycle mechanic (not pro but been wrenching for quite a while, but this was my first triumph experience. Thought I would share some things I learned along the way

1 - the mechanics manual for the fuel pump system has a diagram that shows the fuel flow but the diagram is wrong. The arrows in the diagram show that the bottom port on the fuel pump should go the short hose to the fuel rail (riders right side). However for my bike at least the bottom port should actually go to the long hose that connectors to the hose that goes to the riders left side of the fuel rail. The hose from the riders right side of the fuel rail goes to the upper fuel pump port (the one that goes to the pressure regulator).

2 - Take lots of pics as you disassemble anything - it can be a bit of a pain but its easy to forget where something goes when you have to wait for parts for a few weeks

3 - its important your battery be fully charged when trying to diagnose something.

4 - for using the ODBC connection, a regular reader can be used to help read any error codes. These can also be used to clear the codes. If however you want to get more advanced, TuneECU is a good alternative but its only for Android. The good news is if you have a laptop you can download an android emulator and then install it on your laptop. The only problem is that TuneECU wants access to your folders, pics, favorites so maybe do it on a laptop that doesnt have any personal material on it

5 - Before sending the bike to the dealer, go through standard services. For me, my bike stopped running so I started looking at standard service stuff.
check and replace as needed spark plugs
check and replace as needed air filter and air filter cover gasket
check and replace as needed fuel pump connectors.
check and replace as needed fuses and relays but pay attention when testing the relays - some appear to be 4 prong relays and 1 appears to be 5 so you need to make sure your tester is setup to test the correct type.

WHAT FINALLY GOT IT GOING FOR ME
I had done all the above and the bike still wouldn't start. I finally removed the fuel rail (surprisingly easy process once the tank is off) and tested the injectors with some alligator clipped wires and a 9v battery. Sure enough, injector #1 was plugged up, cleaned out with some brake cleaner spray via the provided tube to a hose attached to the injector inlet prot (note - a good way to make the hose connect is to use heat shrink wire wrap)

Anyway once I had the injectors cleaned and the rail reassmbled and reinstalled, the fuel tank hooked up with the hoses going into the right ports (left fuel rail hose to bottom, right fuel rail hose to top) and cleared the error codes from the ECU, it started running just fine..

SUMMARY
Well my first experience with digging into the triumph was like any first experience digging into a bike that you aren't familiar with - a bit frustrating but good learning experience. I ended up doing some stupid stuff (breaking a fuel line connector, buying a relay it turns out I didnt need) but all in all it went okay and Im happy its going again. Only things I have left to do is coolant change and brake system pad and fluid refresh and thats it. Just in time for winter but still, good to be done

Hope someone finds this useful in the future.

Martin G

 

[Terry Colley]

Sorry to have to contradict you but that diagram is correct. It's really of little consequence since it's a reticulation circuit and will work either way even though some 955s had different size barbs (10mm and 6mm, bizarrely some even had 8mm) on the connectors to suit the different sized flow and return hoses.

 

[mgordonvegas8]

actually I got the hanes manual and it indicates the hoses do have to be connected to specific ports are as I described - the bottom port on the fuel pump (pump out) should be connected to the long hose that goes to the left side of the fuel rail. The top port on the fuel pump plate (which goes to the pressure regulator) should be connected to the shorter hose the comes off the right side of the fuel rail. This probably has to happen because of the sequence with which the fuel injectors fire (if fuel is flowing from 3-2-1 and injectors are firing 1-2-3 then the bike cant catch).

BTW - I recommend the Haynes manual very strongly. It is significantly more useful than the workshop manual, it has help me identify the hose ports on the bottom of the tank and how they are supposed to be routed.

 

[PaulM]

Later bikes only have one hose, so your theory is wrong Terry Colley is correct, they can go either way and work. It's pressure in the system that's needed for them to work. The ECU decides which injector to open, not the hoses.😊