BMW K bikes (Bricks)

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1Back to top Go down   Fuel pump intermittently working. Empty Fuel pump intermittently working. Wed May 30, 2012 4:47 pm

ffbikersa

ffbikersa
Life time member
Life time member
From two days ago, trouble when starting the bike: when I give the contact with key and turn on/off switch on the right-side handlebar to ON, the fuel pump doesn't buzz immediately and I can't start the engine immediately, but have to turn the key and on/off switch a few times, until pump awakes & bike can be started. Dirty contacts on the fuel pump relay, on the key lock and/or on/off switch, or something else??? Advice needed... 😕

Regards
Tarik

    

nino

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@ffbikersa wrote:From two days ago, trouble when starting the bike: when I give the contact with key and turn on/off switch on the right-side handlebar to ON, the fuel pump doesn't buzz immediately and I can't start the engine immediately, but have to turn the key and on/off switch a few times, until pump awakes & bike can be started. Dirty contacts on the fuel pump relay, on the key lock and/or on/off switch, or something else??? Advice needed... 😕

Regards
Tarik

Tarik, always check easier solution first. I think ingnition switch dirty, corroded, or both. Try with wd 40, check the connection from ign. swith to wiring loom, check the fuse, clean it. Clean start button too.

    

Inge K.

Inge K.
VIP
VIP
On a L-Jetronic equipped bike the fuel pump should start when you hit the starter button.
On a Motronic equipped bike the fuel pump should start when you switch on the ignition.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

4Back to top Go down   Fuel pump intermittently working. Empty L-Jetronic Wed May 30, 2012 7:23 pm

ffbikersa

ffbikersa
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@Inge K. wrote:On a L-Jetronic equipped bike the fuel pump should start when you hit the starter button.
On a Motronic equipped bike the fuel pump should start when you switch on the ignition.

This is L-Jetronic, and sometimes (quite often now) it doesn't start, until I move on/off and contact key a few times...

    

Inge K.

Inge K.
VIP
VIP
But still, your fuel pump shouldn`t start untill you press the starter button.
Ignition switch Kill switch


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

6Back to top Go down   Fuel pump intermittently working. Empty More likely kill switch Thu May 31, 2012 2:45 am

ffbikersa

ffbikersa
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@Inge K. wrote:But still, your fuel pump shouldn`t start untill you press the starter button.
Ignition switch Kill switch

Thanks - especially "Kill switch" ought to be useful. I somehow feel problem definitely isn't in ignition switch, because it seems it WORKS - after all, lights on instrument board do go on every time, even when engine wouldn't start.

Problem is - now very often the fuel pump doesn't start aftet I press the starter button after giving the contact with ignition key. So a few more switchings on/off are needed, before it buzzes after pressing starter button and starter starts the engine.

The fuel pump is new - installed just a month ago, and in the service shop they removed and installed back the relays too.

    

ReneZ

ReneZ
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Why don't you put your bike's details in your info? Keeps others from guessing what you have and you get more adequate advise faster.......Help us help you mate.


__________________________________________________
Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Fuel pump intermittently working. Rain
BMW K1200GT - 2003 (ZK01223)
    

8Back to top Go down   Fuel pump intermittently working. Empty Good advice Thu May 31, 2012 3:48 am

ffbikersa

ffbikersa
Life time member
Life time member
@ReneZ wrote:Why don't you put your bike's details in your info? Keeps others from guessing what you have and you get more adequate advise faster.......Help us help you mate.

Good advice, sorry for not doing it.

    

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