K100RS 1984. The fuel pump is not operating, believed, by me, to be caused by the gunge from the sleeve disintegrating, Bike stored for over 10 years. A replacement costs about £170. Any suggestions on how to clean the pump. In fact clean this gunge from the tank.

Many thanks Hugh

Look for second hand one's on Ebay, £50/60 or a Peugeot 205GTI one fits. I used one of these recently to resolve my starting problems, also change inline filter in tank. John

There's all sorts of options out there. Here's just one example from the US. Others have posted a variety of replacement pumps. Try searching 'fuel pump' in the search engine.

http://www.euromotoelectrics.com/EnDuraLast-BMW-K-52mm-Fuel-Pump-16-12-14-61-576-p/fp-576edl.htm

Try this

http://www.ebay.co.uk/itm/BMW-K100-K75-K1100-Fuel-Pump-With-Mount-tested-and-working-1989-Petrol-Pump-/271481544514?pt=UK_Motorcycle_Parts_13&hash=item3f358f9f42

I had a similar problem with mine after sitting for 10 years, the worst problem was cleaning the tank.

Ali

A list of compatible pumps. I have used 2 of them and checked out many more so I believe it is correct.
The main things for a fuel pump is the volume and pressure delivered as well as size i.e. does it fit and fuel line size.
The electrical connections are different on many of them but not so that it cant be changed.



HOLDEN Commodore VK EFI, VL turbo and non turbo, VN onwards V6 and V8 sedan wagon statesman
HOLDEN Camira JD JE Astra Calibra
FORD Falcon XE XF EFI sedan only

FERRARI 412i Coupe
NISSAN Skyline Pintara Pulsar Bluebird
 
ALFA ROMEO 33 Alfetta 75 90 GTV Spider
BMW M3 E30 M5 E28 318i 320i 323i 325e 325i 520i 525e 528i 535i 633Csi 635Csi 733i
CITROEN
FIAT Argenta Brava Regata Strada Ritmo X19
JAGUAR XJ6 XJs Sovereign
LANCIA Beta Delta Gamma Prisma Trevi Y10 Turbo
LOTUS Esprit Turbo
MASERATI Bi Turbo
MERCEDES-BENZ
MG Metro Turbo Maestro Montego
MITSUBISHI Colt Turbo Lancer
OPEL Ascona Corse Kadett Manta Monza Omega Rekord Vectra
PEUGEOT 205 309GTi 405 505
RENAULT R5 Turbo R11 Turbo R18 Turbo R19 R21 Turbo R25 Turbo Espace Quadra Fuego
ROVER SD1 Vitesse 3500 Vanden Plas RANGE ROVER LAND ROVER 3.5 & 3.9 EFI
SEAT Ibiza Malaga
VOLKSWAGEN Transporter Caravelle

Thanks again. I find it hard to believe that so many of you would take the time and effort to help. I now have an understanding of the principle and even prepared to take the "old" apart just to learn.I only hope that one day I will know something that you don't and I can reciprocate
Regards Hugh

The last time I was back home in OZ I was out riding for five days on some fine Great Dividing Range roads on my venerable K and the fuel pump was sometimes just doin' its thing and at other times was lettin' out a hell high hollerin'! At one stage she quit with a coupla hiccups to forewarn me. It was at least eighty K's to the next town and a screamin' thunderstorm would be upon me in an hour or two. I was staring into the dense bush (rainforest-like) for a place to set up me tent for the night, but with some luck (and a nod to the Gods with a chicken bone dance) I was able to restart her and make it to my intended destination that night before darkness descended. The rains came in hard and heavy but I was now safely ensconced in the hotel's pub with beer at hand and food within easy reach.

Once back in 'Merica for work I decided to buy the entire fuel pump she-bang from Euro Moto Electric, including a new Bosch pump, collar, insulation, clamps, filter and hoses. When I return in Springtime I'll fit this new kit before riding South to visit rellies in Victoria.

Not Taking Chances.

ausbrick wrote:It is possible to uncrimp the top of the pump and clean up the brushes  and commutator also even free up the bushes when they sieze up. getting it back together is a bit fiddly as the brushes are spring loaded ,  but if your pump has stopped what have you got to lose . I have revived several  dead pumps that have been dry and unused for years this way.

Many thanks, you have increased my confidence. I'm half way and when complete will post photos and lessons learnt.

Regards 
Hugh
PS Don't hold your breath!