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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Virhiryu on March 21, 2017, 02:31:43 PM

Title: K1100LT fuel pump / relay / ecu / electric problem.
Post by: Virhiryu on March 21, 2017, 02:31:43 PM

hi hi was working on cafe racer k1100lt and i was puting new speedo on it and after puting everythink in fuel pump stop working, i try find why and find out that relay dont work(is working but didnt get connection to work, he have two, 1connected to motoric relay 2connection to ecu) stuff what i check and they are working fine:
-fuel pump works
-if i short the relay fuel pump works
-motoric relay works fine and have connections to pump relay
-all fuses are fine
-bike turning normaly
-fuel level guage works fine


i put back orginal speedo and still didnt work like it should. Only one stuff is not work are gear indicator(it shows wrong gear. on neutral he shows 4 gear)


Any idea?

Title: Re: K1100LT fuel pump / relay / ecu / electric problem.
Post by: Virhiryu on March 21, 2017, 05:09:19 PM

hi, thanks for respond but i dont have " [/size][size=0px]kick stand switch "[/size]   soo that not a problem and what i meant is thet it was working fine week ago and then i put new lights indicators put all wiring nice and tidy under the tank and then i put tank back up and try tu start it and here i am.

Title: Re: K1100LT fuel pump / relay / ecu / electric problem.
Post by: Laitch on March 21, 2017, 10:39:43 PM

Quote from: Virhiryu on March 21, 2017, 05:09:19 PM

. . .  it was working fine week ago and then i put new lights indicators put all wiring nice and tidy under the tank and then i put tank back up and try tu start it and here i am.

What do you mean by "it was working fine"? Did you take it for a ride then or just idle it for a minute? Are the spark plugs firing now but not getting fuel? Are they wet?

Title: Re: K1100LT fuel pump / relay / ecu / electric problem.
Post by: Virhiryu on March 22, 2017, 03:24:29 AM

I just idle it for few minutes and then you could hear pump working fine. Now pump don't work, and spark plugs are dry even if I short the pump so the injections don't work as well

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Title: Re: K1100LT fuel pump / relay / ecu / electric problem.
Post by: Virhiryu on March 30, 2017, 04:38:13 AM

I found a problem yesterday... plug from ecu had water in it and make a short... dry it of and clean connection fuel pump starts like it should and bike started like new.

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Title: Re: K1100LT fuel pump / relay / ecu / electric problem.
Post by: Martin on March 30, 2017, 04:45:38 AM

Dielectric grease or heavy silicon grease helps keep moisture out.
Regards Martin.