BMW K bikes (Bricks)

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1Back to top Go down   85 K100 injectors Empty 85 K100 injectors Wed Aug 01, 2012 10:37 am

tdkclydes

tdkclydes
active member
active member
Hello , I am trying to check the fuel injectors on a 85 K100 which has sat for 10+ yrs . I have tried to clean the injectors . The injector are off of the rail and I have pressurized the injector with air and cleaning solvent . When I press the starter there is no spray coming from the nozzle . If I connect a 12v tester to the electical connection I get current when I press the starter . I do not hear the injectors make any noise . Could the injector not be opening because of build up or does this sound more like a electrical issue ?

Thanks for any help .

    

2Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Wed Aug 01, 2012 11:23 am

japuentes

japuentes
Life time member
Life time member
Hi there, I would take them to a injector cleaning workshop. They have the proper testing and cleaning equipment and spares, remember that our bike´s injectors are the same kind used in cars.
Best regards
JAP


__________________________________________________
85 K100 injectors 2854237993 1988 K100RS SE/ABS
    

3Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Wed Aug 01, 2012 12:27 pm

Inge K.

Inge K.
VIP
VIP
@tdkclydes wrote:When I press the starter there is no spray coming from the nozzle . If I connect a 12v tester to the electical connection I get current when I press the starter.

Does the fuel pump start?


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

4Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Wed Aug 01, 2012 2:20 pm

kfilipow

kfilipow
Silver member
Silver member
Follow Inge's advice. You should hear the pump "whir".

It will be good to have them cleaned. Rjtrucker on this forum cleans them here in the US. Reasonable price. IF you want new, try Euromoto Electrics. Sell for $50 each plus shipping. $ pack for 199.00

    

5Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Wed Aug 01, 2012 2:53 pm

tdkclydes

tdkclydes
active member
active member
I have installed a new fuel pump and filter , you can hear it pump up . I have just tried triggering the pressurized injectors by running a jumper from a 12v source . Still no spray . It seem that most likely the injectors are plugged . Unless I am doing something incorrectly .

I have found a place that i can get 4 rebuilt and matched Ford injectors . In another thread I found people have had very good success with injectors for the 4.9 l Ford # F1ZZ9F593B .

    

6Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Wed Aug 01, 2012 9:11 pm

RicK G

RicK G
admin
admin
You need to put them through an ultrasonic cleaner to start with then run some carbie cleaner through them till you get a good spray pattern. If it were me I would look into the newer 4 hole injectors as they are giving a bit more grunt for less fuel. Check on ebay there was some there a few days ago.
http://www.ebay.com/itm/BMW-K100-K75-K1100-Bosch-Type-II-fuel-Injectors-/271028834777?hash=item3f1a93d1d9&item=271028834777&pt=Motorcycles_Parts_Accessories&vxp=mtr



Last edited by Rick G on Wed Aug 01, 2012 10:10 pm; edited 1 time in total (Reason for editing : Added link)


__________________________________________________
"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 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

7Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Wed Aug 01, 2012 9:44 pm

charlie99

charlie99
VIP
VIP
um might pay to check if the injectors use the negative to switch on .....from memory the injectors have 12 positive to them all the time and the earth side is the switched side ? or am i going crazy again ...(sorry sick at the moment bl**dy flu bug got me good )


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O85 K100 injectors 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 ..
    

8Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Wed Aug 01, 2012 9:51 pm

Inge K.

Inge K.
VIP
VIP
You remember correct, Charlie..........so your flu can`t be that bad
..........have a good recovery Very Happy .


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

9Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Wed Aug 01, 2012 10:34 pm

rosskko

rosskko
VIP
VIP
It might also be a good idea to disconnect your spark plugs. I hear of one idiot who tried exactly what you are trying. The injectors did spit fuel out. It went everywhere. Surprisingly as I cranked the engine over, the pistons were going up and down ( left to right?). Who would have thought. Well this makes a little vacuum in the cylinder that likes to suck in air AND petrol vapour from the injectors that are squirting this little mess all over the bike and surrounds.
I don't think I have to explain any more.
Although it did give me (um him) the final excuse to strip the thing down and make a decent effort at cleaning.

This is what I ended up doing.
Then I went and got a set from this guy because I ended up breaking one in an unrelated event.

rossco


__________________________________________________
1986 K100RT VIN 0093801K100RT with summer fairing for a northern visitor

Basic/2 6308802K100CJ  05/1988

K1100RS 0194321
    

10Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Wed Aug 01, 2012 11:10 pm

RicK G

RicK G
admin
admin
preventing the plugs spsrking involves a bit more than pulling the plug caps off. If you do it that way there is a good chance you can damage the CDI unit. Best thing to do is to earth the lead so that the CDI unit is still firing but not sparking.


__________________________________________________
"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 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

11Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Thu Aug 02, 2012 11:07 pm

Rjtrucker

avatar
Silver member
Silver member
Be careful cleaning the injectors yourself. You should have them cleaned in an ultrasonic cleaning tank. But putting 12 volts thru them for too long (especially if dry) can over heat the coil in them. You need to use an ohm meter to see if the coil is any good. If the coil is good in most cases I can clean them. If you send me an injector for cleaning and I can't clean it and get it functioning properly I do not charge for my time. Also the o rings on the bike are over 25 years old. I install new o rings and replace the screen in the injector. If you or anyone else wants more info on cleaning fuel injectors or the service I offer feel free to contact me.
Ron @ (732)742-6007


__________________________________________________
Ron S
NJ USA
74 R90/6 cafe project
93 K11LT
85 K100RS
85 K100RS turbo project.
And a load of K100 projects and parts.
    

12Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Fri Aug 03, 2012 2:49 am

club_c

club_c
Life time member
Life time member
All due respect to RJTrucker, I had this same problem with both my K bikes, and bought the recon'd Fords for one, and a good used set for the other. I didn't try 'Trucker, he didn't have a service at that time. These injectors get sealed up for all of eternity when left sitting for years.


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

1988 K100RS SE VIN 01477554
    

13Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Fri Aug 03, 2012 3:04 am

charlie99

charlie99
VIP
VIP
a cheap 9 volt battery might help with the activation of the injectors ...just to free them up a little ...but agreed dont hold constant voltage to the injector for any longer than a second or so at a time

many repetitions maybe required after letting the injector soak in some form of cleaner for a while


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O85 K100 injectors 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 ..
    

14Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Fri Aug 03, 2012 3:10 am

Rjtrucker

avatar
Silver member
Silver member
You are right. Not all injectors can be saved. I have a set of ford injectors from my turbo set up which could not be saved. I have had alot of good results with the ultrasonic cleaner I use. Like I said in my other post. If the coil in the injections is good in most cases I can clean and flow test them. And if I can't there is no charge. I also have some injections to replace bad ones if needed.(for a reasonable price)


__________________________________________________
Ron S
NJ USA
74 R90/6 cafe project
93 K11LT
85 K100RS
85 K100RS turbo project.
And a load of K100 projects and parts.
    

15Back to top Go down   85 K100 injectors Empty 1st ride Sun Aug 05, 2012 4:47 am

tdkclydes

tdkclydes
active member
active member
I would like to thank everyone for the help . I got the K100 up and running for the 1st time yesterday . She smoked for about 5 min and then settled in to a nice smooth idle . While I had her on the center stand I clicked her in to 1st gear and let her idle to circulate the oil in the gearbox and drive shaft . This is the first time in over ten years or more that she has run . Are seal problems common after letting a K bike sit for an extended time .The odometer reads just over 5K . The next step will be to lube all of the cables and then a very short ride followed be some new tires . At present she has a set of Michelins , I believe they came from the factory with Metzlers . I will post some photo in the next couple of days . Once again I would like to thank everyone for the help .

    

16Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Sun Aug 05, 2012 4:55 am

charlie99

charlie99
VIP
VIP
good work tdk .....happy riding to you ..

dont forget to view the suggestions for maintenance ...in the portal thread ...."you just bought a k ...now what "

some good info there for returning to service bikes ..

cheers


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O85 K100 injectors 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 ..
    

17Back to top Go down   85 K100 injectors Empty spline lube Sun Aug 05, 2012 5:46 am

tdkclydes

tdkclydes
active member
active member
I will change out the brake fluids and coolant in the next couple of days . I planned on doing the spline lube when I have the tires off being changed . I found a neat idea in one of the post about using long bolts to support the drive shaft when doing the front splines . I will give that a try .

    

18Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Sun Aug 05, 2012 6:00 am

Inge K.

Inge K.
VIP
VIP
@tdkclydes wrote:The next step will be to lube all of the cables and then a very short ride followed be some new tires .
The cables which is teflon lined should not be lubed, only the niples on the ends.


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

19Back to top Go down   85 K100 injectors Empty final drive splines Thu Aug 09, 2012 4:31 pm

tdkclydes

tdkclydes
active member
active member
Hello , I have a question in regards to the final drive splines . I have the drive shaft out and the splines look to be like new , I can detect no signs of wear . It appears that possibly two types of grease have been used , one appears to be white and the other is black , neither is very heavy . The white is more visable at the u joint end of the shaft . I have ordered some Guard Dog 570 spline lube . The bike downshifts very well with no hang up or hard spots . The question is what color is the grease use by BMW ? And since it is this far apart should I do the clutch splines as well .

Thanks

    

20Back to top Go down   85 K100 injectors Empty Re: 85 K100 injectors Thu Aug 09, 2012 6:52 pm

club_c

club_c
Life time member
Life time member
You should start a new thread on this new question. Keeps the forum tidy and easier to search later on.


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

1988 K100RS SE VIN 01477554
    

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