Jump to content


Photo
- - - - -

Bondy's 4Tx Carbs


  • Please log in to reply
15 replies to this topic

#1 bondy

bondy

    needs a 2nd hobby

  • Member
  • PipPipPipPipPipPipPip
  • 794 posts
  • Location:Overton. Hampshire, UK
  • TDM model: 1996

Posted 11 September 2019 - 01:47 pm

Hello All,

Bike has been MOT'd today but just needs a couple bits sorted before it's ready.

One issue is with the carbs. During a test ride yesterday it won't pull cleanly above 4000rpm with the choke in. With the choke out it played ball.

The carbs have been stripped and ultrasonically cleaned and rebuilt with a rebuild kit, including tubes. It idles ok and new airbox to carb rubbers are on order as the originals are hard.

Are there any other area's which could cause this issue.

 

Ta

Bondy.



#2 Studley Ramrod

Studley Ramrod

    Monkey Boys Monkey

  • Root Admin(A)
  • PipPipPipPipPipPipPipPip
  • 16,735 posts
  • Location:HELLO ! I'm in the Library...Notts
  • TDM model: 1993

Posted 11 September 2019 - 03:17 pm

My first thoughts would be the fuel levels, are they within factory specs ?

 

Second would be the needle height, are they set to factory spec ?

 

Difficult to know for sure though, might be that something wasn't refitted correctly, diaphragms, jets, etc.  Might even be the inlet rubbers you mention.


Mk2a 2000 in Silver. Top end Refurb @ 41100 miles, Scottoiler, Renthal Road High Bars, Up & Back Bar Risers, Bellypan, DL650 Handguards, Capt. Picard Bar Ends, House of Henty SS Wheel spacers, New Seat Cover Fitted. 58 MPG !!  Now owned by chrisbee !   Studley's mk2a Bloggerydoodaah !  Photos of my first MK1  Photos of my MK2a  TPLQHCSRSFC No. 1 Fan


#3 bondy

bondy

    needs a 2nd hobby

  • Member
  • PipPipPipPipPipPipPip
  • 794 posts
  • Location:Overton. Hampshire, UK
  • TDM model: 1996

Posted 11 September 2019 - 04:01 pm

Hi Studders,

yep had mooch about on the search engine and badly fitting/old carb to airbox rubbers seem to cause these types symptoms so will change them first rather than rip the carbs out again.

Will you keep you'all posted on progress.

 

Ta Muchly

Bondy.



#4 Studley Ramrod

Studley Ramrod

    Monkey Boys Monkey

  • Root Admin(A)
  • PipPipPipPipPipPipPipPip
  • 16,735 posts
  • Location:HELLO ! I'm in the Library...Notts
  • TDM model: 1993

Posted 11 September 2019 - 05:08 pm

:good:


Mk2a 2000 in Silver. Top end Refurb @ 41100 miles, Scottoiler, Renthal Road High Bars, Up & Back Bar Risers, Bellypan, DL650 Handguards, Capt. Picard Bar Ends, House of Henty SS Wheel spacers, New Seat Cover Fitted. 58 MPG !!  Now owned by chrisbee !   Studley's mk2a Bloggerydoodaah !  Photos of my first MK1  Photos of my MK2a  TPLQHCSRSFC No. 1 Fan


#5 bondy

bondy

    needs a 2nd hobby

  • Member
  • PipPipPipPipPipPipPip
  • 794 posts
  • Location:Overton. Hampshire, UK
  • TDM model: 1996

Posted 11 September 2019 - 05:28 pm

My first thoughts would be the fuel levels, are they within factory specs ?

 

Second would be the needle height, are they set to factory spec ?

 

Difficult to know for sure though, might be that something wasn't refitted correctly, diaphragms, jets, etc.  Might even be the inlet rubbers you mention.

 

Just had it confirmed that everything went back as per factory spec (and knowing the guying doing it I wouldn't doubt him) so hoping it's just the rubbers. I'm getting desperate to get the bugger back and learn to ride again, been 6 years since the last time.

 

Getting twitchy

Bondy.

 

P.S.

during his test ride yesterday he did admit he loiked it, not bad for a chap that doesn't do anything post 1980's  :good: 



#6 dapleb

dapleb

    Monkey Boy

  • Root Admin(A)
  • PipPipPipPipPipPipPipPip
  • 16,097 posts
  • Location:The home of morris dancin
  • TDM model: 1990

Posted 11 September 2019 - 08:03 pm

There is a silly cone mod to old rubbers if ewe can't wait fur new juans.
"Whats up", "Piston Broke", "Yeah me too...hic"

If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117

Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.

Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.

#7 Studley Ramrod

Studley Ramrod

    Monkey Boys Monkey

  • Root Admin(A)
  • PipPipPipPipPipPipPipPip
  • 16,735 posts
  • Location:HELLO ! I'm in the Library...Notts
  • TDM model: 1993

Posted 11 September 2019 - 08:04 pm

Oooh, 6 year twitch is a looooooong time. :lol:


Mk2a 2000 in Silver. Top end Refurb @ 41100 miles, Scottoiler, Renthal Road High Bars, Up & Back Bar Risers, Bellypan, DL650 Handguards, Capt. Picard Bar Ends, House of Henty SS Wheel spacers, New Seat Cover Fitted. 58 MPG !!  Now owned by chrisbee !   Studley's mk2a Bloggerydoodaah !  Photos of my first MK1  Photos of my MK2a  TPLQHCSRSFC No. 1 Fan


#8 butcher650

butcher650

    Knight of Postsalot

  • Member
  • PipPipPipPipPip
  • 502 posts
  • Location:Acle, Norwich
  • TDM model: 1991

Posted 12 September 2019 - 09:46 am

http://www.carpe-tdm...ers#entry168819



#9 dandywarhol

dandywarhol

    Carpe Citizen

  • Supporting Member(thanks)
  • PipPipPipPipPipPipPipPip
  • 5,072 posts
  • Location:Edinburgh, Scotland
  • TDM model: 2003

Posted 12 September 2019 - 12:57 pm

Hmmmm, 4000rpm is the default for the TPS setting when setting it up with the tachometer

..............................


Edited by dandywarhol, 12 September 2019 - 12:57 pm.

1967 Yamaha TD1C 250, 2016 KTM Duke 690

"At the cutting edge of technophobia" Scotland_180-animated-flag-gifs.gif mccoy.gif
 


#10 bondy

bondy

    needs a 2nd hobby

  • Member
  • PipPipPipPipPipPipPip
  • 794 posts
  • Location:Overton. Hampshire, UK
  • TDM model: 1996

Posted 12 September 2019 - 03:51 pm

Hmmmm, 4000rpm is the default for the TPS setting when setting it up with the tachometer

..............................

 

Thanks wee man, have passed on the info.

And belated burpday wishes.



#11 dandywarhol

dandywarhol

    Carpe Citizen

  • Supporting Member(thanks)
  • PipPipPipPipPipPipPipPip
  • 5,072 posts
  • Location:Edinburgh, Scotland
  • TDM model: 2003

Posted 12 September 2019 - 04:25 pm

 

Thanks wee man, have passed on the info.

And belated burpday wishes.

 

Cheers - I forgot you wouldn't know a camshaft from a calm day...................................... :hide:  :pimp:


1967 Yamaha TD1C 250, 2016 KTM Duke 690

"At the cutting edge of technophobia" Scotland_180-animated-flag-gifs.gif mccoy.gif
 


#12 bondy

bondy

    needs a 2nd hobby

  • Member
  • PipPipPipPipPipPipPip
  • 794 posts
  • Location:Overton. Hampshire, UK
  • TDM model: 1996

Posted 12 September 2019 - 05:34 pm

 

Cheers - I forgot you wouldn't know a camshaft from a calm day...................................... :hide:  :pimp:

 

:uhmyeah:  :rotflmmfao: You know me so well. MGB is still in various sheds and garages. 


 

If the new rubbers aren't any good then that's the next plan.


Edited by bondy, 12 September 2019 - 05:32 pm.


#13 Studley Ramrod

Studley Ramrod

    Monkey Boys Monkey

  • Root Admin(A)
  • PipPipPipPipPipPipPipPip
  • 16,735 posts
  • Location:HELLO ! I'm in the Library...Notts
  • TDM model: 1993

Posted 13 September 2019 - 09:05 am

Think you might be confusing inlet rubbers with carb to airbox rubbers chaps.


Mk2a 2000 in Silver. Top end Refurb @ 41100 miles, Scottoiler, Renthal Road High Bars, Up & Back Bar Risers, Bellypan, DL650 Handguards, Capt. Picard Bar Ends, House of Henty SS Wheel spacers, New Seat Cover Fitted. 58 MPG !!  Now owned by chrisbee !   Studley's mk2a Bloggerydoodaah !  Photos of my first MK1  Photos of my MK2a  TPLQHCSRSFC No. 1 Fan


#14 MipeTDM

MipeTDM

    seems to like Carpe

  • Member
  • 47 posts
  • TDM model: 1997

Posted 18 September 2019 - 03:36 pm

Have you checked the carb diaphragm rubbers, the ones that move the slides?
I've had some similar issues, turned out that one of the two was torn.

#15 bondy

bondy

    needs a 2nd hobby

  • Member
  • PipPipPipPipPipPipPip
  • 794 posts
  • Location:Overton. Hampshire, UK
  • TDM model: 1996

Posted 18 September 2019 - 04:13 pm

Ta muchly, I'll let my mech know but I suspect he would have check them when he rebuilt the carbs.

 

Boop.



#16 Favs

Favs

    Sir Cumference

  • Supporting Member(thanks)
  • PipPipPipPipPipPipPipPip
  • 3,167 posts
  • Location:County Durham
  • TDM model: 2008

Posted 18 September 2019 - 04:24 pm

Has everyone, apart from me n Splodge, forgotten about wintergreen? 

 

Here's an example https://www.youtube....h?v=9eTF6tnYYdc lots of other vids to watch too........


Single-handedly reviving the Wave.

 

2008 reg. Black TDM 900 ABS

 

 

 



0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users