BMW K bikes (Bricks)

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1Back to top Go down   fuel pump problem Empty fuel pump problem on Tue Nov 12, 2013 8:00 pm

penfold67

penfold67
active member
active member
hi everone

i have a bmw K100 LT on a G REG with a problem with not starting its had new fuel pump and ecu and cdi and injetor rail and relays and fuel pressure regulator and new bosch spark plugs (x5dc). The problem is the pump is over running and fluding it then i pull the wires out for the fuel pump the bike will fire up and run but i can not rev it to much will die as its not getting much fuel.

please can some one help me please

from mark:( Sad Sad Sad Sad Sad

    

2Back to top Go down   fuel pump problem Empty Re: fuel pump problem on Tue Nov 12, 2013 8:11 pm

RicK G

RicK G
VIP
VIP
Have you checked the fuel lines for blockages, I noticed you have replaced the FPR already.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

3Back to top Go down   fuel pump problem Empty Re: fuel pump problem on Wed Nov 13, 2013 2:53 am

charlie99

charlie99
VIP
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might be worthwile  pulling the injectors to see if they are pulsing fuel  instead of a straight stream ...or connecting up led to to one of the injector leads to see if it is being sent the right signals


other wise could we be looking at an intermittent temp sensor connections on the water stub to under seat computer ?

please follow the  "k100 2 valve efi trouble shooting" logic flow charts


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%Ofuel pump problem Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

4Back to top Go down   fuel pump problem Empty Re: fuel pump problem on Wed Nov 13, 2013 4:18 pm

penfold67

penfold67
active member
active member
fuel pump problem 259495 fuel pump problem 25650 ;BMW;

    

5Back to top Go down   fuel pump problem Empty Electrical » fuel pump problem on Wed Nov 13, 2013 5:14 pm

RT

RT
Life time member
Life time member
Ha don't worry mate. we ve all pulled the hair out. It will turn out to be something rather simple. Look for an easy answer first before you lose control.
Cheers
RT


__________________________________________________
2011 R1200RT
    

6Back to top Go down   fuel pump problem Empty Re: fuel pump problem on Wed Nov 13, 2013 8:22 pm

RicK G

RicK G
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VIP
@RT wrote:Ha don't worry mate. we ve all pulled the hair out. It will turn out to be something rather simple. Look for an easy answer first before you lose control.
Cheers
RT
Don't take too much notice of RT Penfold he is just jealous of my fine head of hair.
Work your way through the flow chart and anything you are unsure of just ask. So far we havent experienced a problem here that couldnt be solved.
Charlie99 was saying about checking the spray of the injectors which will give you a good guide as to what is happening and if the injectors are permanently open which could well be the case as you say it will idle without the pump going. If you do check the injectors individually dont leave the power connected for any more than 1 second or so because they over heat easily or use a small 9 volt battery as used in a household fire alarm.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

7Back to top Go down   fuel pump problem Empty Electrical » fuel pump problem on Thu Nov 14, 2013 1:34 am

RT

RT
Life time member
Life time member
Sorry to keep butting in Penfold, but I'll have Rick G know I actually had to use a comb yesterday morning, Ha, means I must get that hair cut.
Good luck with the problem.


__________________________________________________
2011 R1200RT
    

8Back to top Go down   fuel pump problem Empty the temp sensor on Thu Nov 14, 2013 6:15 pm

penfold67

penfold67
active member
active member
(the temp sensor) would that control the injectors as i have changed the ecu and the cdi

mark

    

9Back to top Go down   fuel pump problem Empty Re: fuel pump problem on Thu Nov 14, 2013 7:09 pm

club_c

club_c
Life time member
Life time member
When checking the fuel spray pattern on the injectors, keep a fire extinguisher very very near (don't ask me how I know).


__________________________________________________
"There's never enough time to do it right, but there's always time to do it over."

1988 K100RS SE VIN 01477554
    

10Back to top Go down   fuel pump problem Empty Re: fuel pump problem on Thu Nov 14, 2013 7:25 pm

RicK G

RicK G
VIP
VIP
@penfold67 wrote:(the temp sensor) would that control the injectors as i have changed the ecu and the cdi

mark
The temp sensor will allow the ECU to vary the mixture ratio to allow for cold or hot running conditions but even a totally non functioning temp sensor should not cause overfueling as you describe.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

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