BMW K bikes (Bricks)

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1Back to top Go down    Fuel Rail Removal and Air Box on Sat Nov 10, 2018 8:13 am

DBRMN

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So I'm currently trying to clean my K up a bit so I decided to remove the fuel rail so I could start polishing the bit behind it. However my Haynes manual tells me that when I remove the fuel rail the injectors should all slide out aswell. However having removed the clips and all the bolts necessary they wouldn't 'slide out' so I used a bit of force and now instead of the injectors coming out the rail separated at the end of the injectors leaving them still in the engine, if that makes sense.

Am I missing something?

Also another question has anyone tried to remove the throttle bodies without taking the frame off, is it possible? and is it possible to get back on? (I mean including the airbox)

Regards,

Alex

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2Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 8:46 am

duck

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Before removing the fuel injectors you should either blow some compressed air or vacuum around their bases as little bits of dirt/gravel can collect in the fuel injector wells and might fall into the cylinder when you pull each injector.

The easiest way to remove them is to leave them clipped into the fuel rail and pull on the fuel rail. If you've already removed the fuel rail them wiggle them around a little while pulling on them.

To put them back in:

1 - Put some motor oil on the O-rings at both ends of the fuel injectors.

2 - Install and clip them into the fuel rail.

3 - Line them up with the holes and then put a block of wood on the fuel rail and tap them in gently with a hammer.

Once you have everything back together start the bike and inspect for fuel leaks at the top and bottom of each injector to make sure they're all seated properly.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

3Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 8:51 am

DBRMN

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@duck wrote:Before removing the fuel injectors you should either blow some compressed air or vacuum around their bases as little bits of dirt/gravel can collect in the fuel injector wells and might fall into the cylinder when you pull each injector.

The easiest way to remove them is to leave them clipped into the fuel rail and pull on the fuel rail. If you've already removed the fuel rail them wiggle them around a little while pulling on them.

To put them back in:

1 - Put some motor oil on the O-rings at both ends of the fuel injectors.

2 - Install and clip them into the fuel rail.

3 - Line them up with the holes and then put a block of wood on the fuel rail and tap them in gently with a hammer.

Once you have everything back together start the bike and inspect for fuel leaks at the top and bottom of each injector to make sure they're all seated properly.
Ye you see the stage I've got to is I've removed the fuel rail and the injectors wiggle, twist everything but won't come out?

http://dbrmn.kforum-tech.com
    

4Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 9:05 am

duck

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It will take some force to pull them.  They've been sitting in there for decades and the O-rings have probably hardened some from age and heat cycles.

Even when you pull them with the fuel rail attached it takes some force. They don't just slide right out.  When I pull them with the fuel rail I usually use a small piece of wood to pry on the fuel rail.

Edit to add: You might try spraying some penetrating oil around the bases to see if that helps.



Last edited by duck on Sat Nov 10, 2018 9:07 am; edited 1 time in total


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

5Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 9:07 am

DBRMN

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@duck wrote:It will take some force to pull them.  They've been sitting in there for decades and the O-rings have probably hardened some from age and heat cycles.

Even when you pull them with the fuel rail attached it takes some force. They don't just slide right out.  When I pull them with the fuel rail I usually use a small piece of wood to pry on the fuel rail.
Oh ok thats reassuring good so they do need a bit of force. I've heard you should replace all you O-rings, what's their specific name or part number do you know? I wouldn't even know where to start to know what they're called. Cause they're O-rings each end isn't there.

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6Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 9:18 am

duck

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The BMW FI O-ring part # is 13641730767 but they're insanely priced for a very common part.

You can probably find them on Ebay for a much better price.

The spec in the BMW parts catalog is 7,52X3,53.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

7Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 9:27 am

duck

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Some notes that I have indicate the O-rings for a 1990 5L Mustang will fit so that might be a good place to start.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

8Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 9:31 am

Point-Seven-five

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__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

9Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 9:34 am

duck

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Here's a couple of US part #s for the O-rings:

ES70599

ACDelco 217-3366


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

10Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 9:37 am

duck

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Life time member
Life time member


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

11Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 9:38 am

DBRMN

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hahaha omg that makes me feel so much better!

http://dbrmn.kforum-tech.com
    

12Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 9:39 am

DBRMN

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@duck wrote:Here's a couple of US part #s for the O-rings:

ES70599

ACDelco 217-3366
Wow thats really interesting I'll have a look thank you, ye cause I found the OEM ones for £2.39 each !! way to expensive

http://dbrmn.kforum-tech.com
    

13Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 9:59 am

Point-Seven-five

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If you do a search here for injector o-rings you will find automobile models that use the same o-rings.  I seem to recall buying o-rings for a Ford Mustang at NAPA for my K100RS.  I think they cost me something like $6 for a pack of ten or twelve.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

14Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 10:06 am

92KK 84WW Olaf

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I bought a pack at one point and was glad I did.

The advice about starting and checking for leaks is important......in my last time in I had 2 leaks.....when I looked closely the two leaks had also got damaged O rings despite being careful.....so I had the necessary spares.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 58,645 now 84,600 miles
1983 K100RS 0011175 Fricka 29,000 miles Damn K Pox
    

15Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 11:16 am

DBRMN

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Anyone got any UK ideas, I had a look at the mustang ones and they're just as expensive as the OEM ones in the UK, though in the US they look dead cheap.

http://dbrmn.kforum-tech.com
    

16Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 11:20 am

DBRMN

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http://dbrmn.kforum-tech.com
    

17Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 12:07 pm

duck

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Life time member
Search for 263991229142 on Ebay UK


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

18Back to top Go down    Re: Fuel Rail Removal and Air Box on Sat Nov 10, 2018 12:41 pm

DBRMN

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@duck wrote:Search for 263991229142 on Ebay UK
Wow  (o) thats amazing I'll order a set now.

http://dbrmn.kforum-tech.com
    

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