fuel pressure issue

[Kingbob]

i hope someone can help
i bought 885i  it starts and runs for a minute ish and then slowly dies
Now if i disconnect the top/return fuel pipe from the tank it squirts and reconnect it the bike will then start and run for a minute ish again
but if i dont disconnect release the pressure and reconnect the pipe it wont start at all.
all done with the fuel filler cap off/open so the tank isnt pressurising

any advice ???

[nickjtc]

If it's fuel injected it needs the pressure from the fuel pump to force the fuel through the injectors, unlike a carburetted bike. So if there is pressure then your fuel pump is probably ok. Kinked fuel supply line?? I'm sure someone will chime in on this....

[Kingbob]

checked all pipes no kinks
should there be pressure in the return pipe too ?
and why would it start after releasing the return pipe pressure

[PeteH]

The return and feed pipe are on a common rail so yes it will be pressurised, apart from that I have no idea what the problem is...sorry...

[Kingbob]

 Im wondering if there is a blockage in the tank on the return.
Tank off again lol

[PeteH]

Have you tried just taking the return pipe off and pushing in the plunger on the tank fitting?

[Sin_Tiger]

Have you tried just taking the return pipe off and pushing in the plunger on the tank fitting?

With a fire extinguisher close at hand 

[Kingbob]

yes the plunger seems fine
i might take the tank off tonight

[PeteH]

yes the plunger seems fine

And you got fuel when pressed in?

[Kingbob]

Erm no i dont think so

[Timbox2]

Think youve got to take the fuel pump plate off and investigate, blocked filter, blown pipes, pump???

[Kingbob]

The hose thats on the fuel pressure regulater is that suppose to be connected somewhere ?

[PeteH]

The hose thats on the fuel pressure regulater is that suppose to be connected somewhere ?

Yes, but I dont know where....you will have to trace it back

[Kingbob]

Found where it goes on the airbox
But still no joy
I think i might ebay it and go back to bmws

[Chris Canning]

Ha ha with an 1100s for the last 16 years a K1200r Sport for 7 years an a new S1000XR I like keeping my 955 Tiger it's easy to work on and I do it all my self well nearly all