BMW K bikes (Bricks)


You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   Vacuum leak at T/B's Empty Vacuum leak at T/B's Mon Jul 30, 2012 6:15 am

caferacer62

caferacer62
Life time member
Life time member
Ok here is one for the gurus. Have had the t/bodies off and the base adaptors during tidy up. All back together and going,however after washing the bike i started it and was blowing the water off the top of the motor with air. Some went towards base of t/b and engine stuttered. I thought might have been lectric cos it went away. Took it for first test ride, bogs down at 3000ish rpm but i was taking it easy.
At first i thought maybe leaning out but got good fuel pressure(i can see guage while riding). This arvo i sprayed some aero start around t/b clamps and base at head and idle dies. Particularly at tbe base to head area.This does not make sense as it should rise unless its a bit rich maybe not. Anyway it still appears to me that there is a leak there.
What are your thoughts. Any ideas would be appreciated.


__________________________________________________
Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

Vacuum leak at T/B's 170874
    

2Back to top Go down   Vacuum leak at T/B's Empty Re: Vacuum leak at T/B's Mon Jul 30, 2012 6:55 am

Rick G

Rick G
admin
admin
Sure sounds like a leak. Probably a silly question but did you put new O rings in the bases.


__________________________________________________
"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 1999 K1100 LT with a Big Block 1200
    

3Back to top Go down   Vacuum leak at T/B's Empty Re: Vacuum leak at T/B's Mon Jul 30, 2012 7:13 am

twincarb

twincarb
Life time member
Life time member
As far as I am aware there are no O rings between the engine and the base plate that then connects to the throttle bodies?

But it would sound like one or more of the base plate's aren't sitting correctly... if i remember correctly they only have a proper fit one way round


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
Vacuum leak at T/B's 169042Vacuum leak at T/B's 169034
    

4Back to top Go down   Vacuum leak at T/B's Empty Re: Vacuum leak at T/B's Mon Jul 30, 2012 7:19 am

caferacer62

caferacer62
Life time member
Life time member
Theres o rings in the bases!!!!! I looked at them and it didnt look like they were o rings. More like sealing grooves.
If there is o rings do you know what size they are Rick?
Can i get away with some sealant? I used loctite 518 sealant when i did them but maybe its not suitable. Might be better with dow corning blue sealant.


__________________________________________________
Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

Vacuum leak at T/B's 170874
    

5Back to top Go down   Vacuum leak at T/B's Empty Re: Vacuum leak at T/B's Mon Jul 30, 2012 7:34 am

Rick G

Rick G
admin
admin
I don't know what size but I am fairly sure my K100 had O rings unless I am mixing it up with the K11.
Just been looking at my parts cattledog and it says no it has not got any so I better belive that or else.
I suppose you had better use some petrol proof Gorilla snot on them. 3 Bond


__________________________________________________
"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 1999 K1100 LT with a Big Block 1200
    

6Back to top Go down   Vacuum leak at T/B's Empty Re: Vacuum leak at T/B's Mon Jul 30, 2012 7:47 am

caferacer62

caferacer62
Life time member
Life time member
Ok thanks Rick the parts dogologue wouldnt lie.
I have pulled them off now and the loctite stuff didnt look good. Think i will go 3bond or equivalent. You can get it apart you know with the fuel rail and tank still on. Good thing i have monkey fingers. Razz
Might be some choice words going back together.


__________________________________________________
Bert 2.0

Don't give in to the Black Dog!
"A Zorst, a zorst my kingdom for a Zorst"

Vacuum leak at T/B's 170874
    

7Back to top Go down   Vacuum leak at T/B's Empty Re: Vacuum leak at T/B's Mon Jul 30, 2012 10:21 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Only the 16V models have o-rings under the intake boots. I used a smear of
Drei-Bond (same as Three Bond, Fuji Bond, Yama Bond, etc) BMW part number
07 58 9 062 376.


__________________________________________________
"How many cars did we pass today?" "ALL of them."
1977 R75/7-100, '93 K11/K12 Big Block, '93 K1100RS, '95 R100 Mystic, '96 K1100RS, 2 x '98 K1200RS, '06 K1200R & '09 K1300GT
    

Sponsored content


    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum