BMW K bikes (Bricks)

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1Back to top Go down   fuel hose blew up Empty fuel hose blew up on Mon Sep 03, 2012 12:39 pm

VPutin

VPutin
active member
active member
Hi everyone from Russian K-bike owner (BMW K100RS'90)
Just another topic of "bike doesn't start", but with little intro.
While ago, on crossroad my bike, suddenly, decide to stalled. When I try to accelerate, to prevent it, my fuel hose blew up and poured my knees by gas. I replace hose on a road with wheel compressor one and reach home, with some riding troubles - engine won’t work on low RPM, and strange sound of fuel pump work.
So, I decide to replace fuel pump. Put a new one (BOSCH) from one Russian car with same parameters like original one (doesn't have code around me, but it pretty same as NAPA ones)

When assemble it back, bike do not want to start.
It's possible to start with open throttle, but it run up no more than 2000, and stop when I lose the throttle.

I check the fuel pressure - in a beginning pump raise it up 30-40 psi, then run quickly down, when starter works it easily reach 60-70 psi, but going down to zero quickly. So, it confirms my idea of dead FPR.

Check sparkplug – they reasonable black and sooty. But when I clean one and check, it seems to be ok.

As I can imagine big fuel pressure can make my injectors leaky, so it easiest way to replace them with new one.

So, my next steps are replacing FPR, injectors and sparkplug, but may be I missed something and should look somewhere else?

Any ideas are highly welcome )



Last edited by VPutin on Tue Sep 04, 2012 3:14 am; edited 2 times in total

    

2Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Mon Sep 03, 2012 1:22 pm

charlie99

charlie99
VIP
VIP
hi !

welcome to tthe forum .

i think you are correct with the diagnosis about the fuel presure unit

i would replace yours first and see what eventuates , doing the injectors immediately would be wise also but not neccesary till you have checked the hoses inside the fuel tank ...you may have a created some leakage around the flexible hose between the pump , the fuel filter and the feed pipe ...lets hope the metal feed pipe hasnt got a split in it .
replacing the plugs would help with starting till you get it sorted ...dont thow out the old ones unless they have done a lot of work .

cheers and again welcome


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%Ofuel hose blew up 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 ..
    

3Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Mon Sep 03, 2012 2:34 pm

88

88
Life time member
Life time member
Привет и добро V Путин. Я был лет Москва много раз. Вы очень смелый ездить на велосипеде в этом городе трафика. Я думаю, что у вас есть хорошие идеи на регулятор давления топлива, но почему утечка топливного шланга в первую очередь - это был старый и трещинами или ваша система получает слишком много давления?
88KE


__________________________________________________
fuel hose blew up Ir-log11 88....May contain nuts!fuel hose blew up Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

4Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Mon Sep 03, 2012 8:48 pm

RicK G

RicK G
VIP
VIP
What a Face


__________________________________________________
"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
    

5Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Mon Sep 03, 2012 10:23 pm

CommanderKewl

CommanderKewl
Silver member
Silver member
88KE wrote:Привет и добро V Путин. Я был лет Москва много раз. Вы очень смелый ездить на велосипеде в этом городе трафика. Я думаю, что у вас есть хорошие идеи на регулятор давления топлива, но почему утечка топливного шланга в первую очередь - это был старый и трещинами или ваша система получает слишком много давления?
88KE
Easy for you to say... nyet!

    

6Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 12:27 am

Crazy Frog

Crazy Frog
admin
admin
@CommanderKewl wrote:
Easy for you to say... nyet!

Come on CommanderKewl! this is easy....
I can translate this for you:
Bonjour et bienvenue V Poutine. J'étais de nombreuses fois a Moscou. Vous êtes très courageux de faire de la moto dans la circulation urbaine. Je pense que vous avez une bonne idée sur le régulateur de pression de carburant, mais pourquoi la fuite tuyau de carburant en premier lieu - elle était vieille et fissurée ou votre système fournit trop de pression?


Welcome to the forum VPutin
CF


__________________________________________________
fuel hose blew up Frog15fuel hose blew up Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

7Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 2:14 am

VPutin

VPutin
active member
active member
88KE wrote:Привет и добро V Путин. Я был лет Москва много раз. Вы очень смелый ездить на велосипеде в этом городе трафика. Я думаю, что у вас есть хорошие идеи на регулятор давления топлива, но почему утечка топливного шланга в первую очередь - это был старый и трещинами или ваша система получает слишком много давления?
88KE
Hi 88KE
is my English so poor, so you decide to answer in my native language? Wink

Regarding fuel hose, yeah, seems it was quite old, and I'm not surpriced it blew up, when pressure going up.
With my not realy rich expirience, I'm wonder, why too much pressure on fuel system do not let bike start?
As I can imagine, if the injectors are good, amount of fuel goes to engine should accurate, independently of big pressure in system?

P.S. Please never use auto-translate services to deal with Russian language ))) the result is... you know... nor Rusiian (just kidding)

    

8Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 4:15 am

ReneZ

ReneZ
Life time member
Life time member
The amount of fuel IS dependant on the pressure in the fuel rail. The higher the pressure behind it the more fuel will flow through an opening (P*V=n*R*T). Cool


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

Rene


BMW K100 - 1985 (0030029) fuel hose blew up Rain
BMW K1200GT - 2003 (ZK01223)
    

9Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 5:38 am

Crazy Frog

Crazy Frog
admin
admin
@ReneZ wrote:The amount of fuel IS dependant on the pressure in the fuel rail. The higher the pressure behind it the more fuel will flow through an opening (P*V=n*R*T). Cool

Time(in ms) is the variable.
The computer calculates the time to open the injectors assuming that the pressure at the rail is constant (36psi).


__________________________________________________
fuel hose blew up Frog15fuel hose blew up Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

10Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 12:11 pm

88

88
Life time member
Life time member
@VPutin wrote:
Hi 88KE
is my English so poor, so you decide to answer in my native language? Wink

No Sir, your english is fine. I was just trying to make you feel welcome and practice my Russian. I should stick to French! CF's translation is easier for even me to understand Very Happy

88


__________________________________________________
fuel hose blew up Ir-log11 88....May contain nuts!fuel hose blew up Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

11Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 1:33 pm

VPutin

VPutin
active member
active member
88KE wrote:No Sir, your english is fine. I was just trying to make you feel welcome and practice my Russian. I should stick to French! CF's translation is easier for even me to understand Very Happy

88
No, keep trying in Russian, but stay away from Google.translate Very Happy

    

12Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 1:55 pm

88

88
Life time member
Life time member
@VPutin wrote:
No, keep trying in Russian, but stay away from Google.translate Very Happy


хорошо fuel hose blew up 112350


__________________________________________________
fuel hose blew up Ir-log11 88....May contain nuts!fuel hose blew up Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

13Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 6:51 pm

Crazy Frog

Crazy Frog
admin
admin
88KE wrote:
@VPutin wrote:
No, keep trying in Russian, but stay away from Google.translate Very Happy


хорошо fuel hose blew up 112350

Even if the accuracy of the translation may not be the greatest, it was nice to try answering in the native language of a member.
88KE made the effort and it must be taken to what it is: Improving the communication between us.
If a French rider registers on this forum, I would also make my best to try to have him feeling welcome and I will certainly ad a couple of French words to my message.

We are only trying to help each others.
fuel hose blew up 112350 to 88KE

CF


__________________________________________________
fuel hose blew up Frog15fuel hose blew up Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

14Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 8:02 pm

kfilipow

kfilipow
Silver member
Silver member
Tres bien CF. Very courteous and thoughtful. Welcome Vputin, from the US. kfilipovich of the Leningrad clan.

    

15Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 9:52 pm

brickrider

brickrider
Life time member
Life time member
Very well stated, Crazy Frog Very Happy

    

16Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Tue Sep 04, 2012 9:57 pm

yankeeone

avatar
Platinum member
Platinum member
It really is neat that this group is such a global connection.

    

17Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Thu Sep 06, 2012 8:24 am

K75cster

K75cster
Life time member
Life time member
all i know about translations is. Authur dent had a fish shoved in his ear, so he could understand his captors. seems a reasonable option


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

18Back to top Go down   fuel hose blew up Empty Re: fuel hose blew up on Thu Sep 06, 2012 4:22 pm

sidecar paul

sidecar paul
Life time member
Life time member
Ah, yes, the Babel fish. fuel hose blew up 112350

Paul.


__________________________________________________
'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

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