Author Topic: fuel pressure issue  (Read 2913 times)

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August 22, 2016, 12:17:36 PM on

Offline Kingbob (OP)

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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 ???


August 22, 2016, 02:22:27 PMReply #1 on

Offline nickjtc

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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....
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August 22, 2016, 05:14:58 PMReply #2 on

Offline Kingbob (OP)

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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

August 23, 2016, 01:39:38 PMReply #3 on

Offline PeteH

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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...
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August 23, 2016, 08:15:18 PMReply #4 on

Offline Kingbob (OP)

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

August 24, 2016, 08:53:47 AMReply #5 on

Offline PeteH

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Have you tried just taking the return pipe off and pushing in the plunger on the tank fitting?
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August 24, 2016, 10:15:47 AMReply #6 on

Offline Sin_Tiger

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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  :grnb
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August 24, 2016, 08:25:23 PMReply #7 on

Offline Kingbob (OP)

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

August 25, 2016, 08:16:44 AMReply #8 on

Offline PeteH

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yes the plunger seems fine

And you got fuel when pressed in?
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August 25, 2016, 01:35:11 PMReply #9 on

Offline Kingbob (OP)

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Erm no i dont think so

August 25, 2016, 03:55:09 PMReply #10 on

Offline Timbox2

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Think youve got to take the fuel pump plate off and investigate, blocked filter, blown pipes, pump???
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August 25, 2016, 08:59:29 PMReply #11 on

Offline Kingbob (OP)

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

August 26, 2016, 10:25:08 AMReply #12 on

Offline PeteH

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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
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August 26, 2016, 03:46:02 PMReply #13 on

Offline Kingbob (OP)

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

August 26, 2016, 03:57:22 PMReply #14 on

Offline Chris Canning

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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 :rrr :icon_biggrin: