Sitting at Kyneton

[blazing928]

My 907 , wouldn't restart after filling up with petrol whilst on a local Ducati club ride.
So here i am in Kyneton, about 90 minutes from home, waiting for a friend to pick us both up.

General diagnosis is fuel pump, there is power to it but no pump noise.
So relay is working.

First time i have been stranded.

Interesting to sit and watch the life and traffic at a petrol station!

[Duc906]

Hard luck Nigel, hope your back on the road soon.

[davo]

Hi Nigel, not much fun when things don`t go!

I just bought a fuel pump the other week off ebay for around the $210. I figure mine is going to let me down at some stage, given it`s age. So it was a bit of insurance. Still waiting for it to arrive. Thought i`d do it while the dollar was up.
There is another for sale i see, so the chap must have a few. He quotes it for a BMW but says it is the same for our bikes.

Here is the link to a pump:
http://cgi.ebay.com/ebaymotors/BMW-K-K7 ... 3a693e8be1

Hope this helps.

I believe there are other alternatives though.

[paso750]

what you can try when removed is to reverse the polarity. If you`re lucky and there´s some dirt in the pump this could push it out. I reckon chances are not very high though, still worth a try.
This topic made me search google and in fact I found a german file from a guy who explains how to repair a pump from a K100. It`s several pages. I`ll try to translate and upload it this evening or the next few days.

G.

[paso750]

quick and dirty.
If you have problems accessing the website press reload of your browser, try later or a different browser.
http://www.box.net/shared/i8zgqnd7bdye1rofk1bg

If someone actually tries the rebuild keep us posted about the outcome.

G.

PS. it`s added to the FAQs

[Laddie]

obviously hard to diagnose over the internet ...but doesn't sound like fuel pump...

I know the pump has to die some time...but to coincide with a fuel stop is odd.

The pump doesn't always run when you turn the key...the pump doesn't crank over unless the line pressure is down...and the bike would usually at least fire on residual line pressure.

question 1: did you check for any line pressure?



like paso750 said - try spinning it; to remove it it's better to get someone with small hands and force them to remove the pump under pain of death for encouragement...then remove the gauze filter and spin the roller race...it only takes a flake of rust to jam the pump.

I got a Bosch replacement a while back when the hose connection had cracked - the cheap way was to go to a Bosch distributor and just ask for the part no. (and don't tell them they are hard to get!!! ). The price they sold it was way under what it should be.

[angelix]

I wonder if with the petrol they gave you also a good load of water (or possibly dirt?)

the connections to the pump i think are "exposed" (fuel is non conductive) therefore if lots of water go in then there is a chance the pump is "shorted" and stops working.

Then it could well be a problem with the pump, a loose wire or some other electrical connection in any case you will need to empty the fuel tank and check.

if there is water, make sure you have a witness as i believe you are entitled to get some sort of compesation for your troubles...

[giarcg]

The pump doesn't always run when you turn the key...the pump doesn't crank over unless the line pressure is down...

I believe the pump does run every time...if you allow enough time between switch cycles.

There is no fuel pressure sensor in the system so the ECU (which controls the pump) does not know what fuel system pressure is. I believe that when you turn the key on the ECU allows the pump to run for a predetermined amount of time. If the ECU does not sense engine RPM when that time is up it figures the engine is not running and it shuts off the fuel pump. This is good in case of an accident, you don't want pressurized fuel feeding a possible fire.

[ynot]

Yep- I have had that kind of problem some years ago, when the petrol station guy fiddled arround with the petrol pump nozzle and detached wires from plugs inside of the tank...

[blazing928]

Hi team
been waiting for the site to come back to update..

and the winner is YNOT !!!

The positive wire inside the tank, where it connects to the outside wire , had a very loose crimp. When I filled the tank I must have knocked it off. We checked the wire under the tank, so we knew power was going there. Couldn't really see inside it.
Now squeezed and fixed.
The others are glued by some beige coloured glue. What is it?

Sadly I only found this out after I got home and drained the [drank a little] BP Ultimate.

I have a spare fuel pump for the other bike,I think it is the bosch one, might carry it on the Snowy Ride.....

[907pasonut]

hi paso folkes...G'day Nigel,
just read your "Kyneton and Bust" editorial on Desmoto today,good read (perhaps you could post it)...I had to have a laugh, shit happens!! good to ear it was easily fixed.
I might see you on a ride soon
btw...I've heard of people doing a bit of petrol sniffing, but not drinking the stuff...

[PasoRoo]

Hi Nigel, Claude,

Was in Melbourne last month and saw a 907 parked outside one of the new office buildings at the top of Bourke St (where the Southern Cross Hotel used to be). Either of you lads?

Cheers,

Mike

[blazing928]

Hi Mike, nope not mine.

Noticed a new 907 member join the DOCV recently. Soon we may have 3 907 s on a trip.
Planning on doing Buxton ride.
Nige

[907pasonut]

Hi Nigel, Claude,

Was in Melbourne last month and saw a 907 parked outside one of the new office buildings at the top of Bourke St (where the Southern Cross Hotel used to be). Either of you lads?

Cheers,

Mike

hi Mike,
its not mine...it has been in hibernation for a while

[higgy]

just read your "Kyneton and Bust" editorial on Desmoto today

viewable from here ?
Could use a diversion seeing how most of what I have is wet