Author Topic: Carb leak…not/new fuel lines just done  (Read 1027 times)

Offline JezzaPeach

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Carb leak…not/new fuel lines just done
« on: June 10, 2024, 09:42:53 AM »
Just a note to say it looks like what I thought were leaks from float bowl joints (supposedly due to float valves letting by) was actually coming from the union of the fuel pipe on the carb. Now hopefully sorted by pushing the pipe on a bit more and twisted wire reinforcement. Just in case anyone else has had the same. 
« Last Edit: July 23, 2024, 11:59:55 AM by JezzaPeach »
1972 CB500/4 K1 Gold
Wanted: my 500/4 UGP96M
from 1975-78. Garnet Brown.

Offline McCabe-Thiele (Ted)

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Re: Carb leak
« Reply #1 on: June 10, 2024, 01:37:21 PM »
When I fiited the replacement petrol pipe on my 500 I used spring clips at the carb end but not at the tank end as I was using a temporary petrol tank so they were connected to a T piece. My pipe was clearly softer at the T piece end and started to weep after a couple of days in use..

The pipe was E10 safe from Planet Silicone - it appears that the pipe looses some elasticity once in use so a clip is essential.
« Last Edit: July 11, 2024, 04:10:50 PM by McCabe-Thiele (Ted) »
Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline JezzaPeach

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Re: Carb leak
« Reply #2 on: June 10, 2024, 01:39:56 PM »
Noted thanks Ted 👍
1972 CB500/4 K1 Gold
Wanted: my 500/4 UGP96M
from 1975-78. Garnet Brown.

Offline JezzaPeach

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Re: Carb leak/new fuel pipes
« Reply #3 on: July 11, 2024, 04:02:14 PM »
Thanks again to Ted, and Julie. I found the 5.4/9.4 pipe from Planet Silicone and although I tried buying clips, I found the ones I already had were a better fit, helped by a touch of red rubber grease helping them slide along the pipe. After locking the twistgrip open and taking the seat and side panel off for better access, I put the clips on and slid the pipe forwards through the holes in the carb plate, then manipulated them with a small screwdriver and ultra long nose pliers, plus a little red rubber grease in the pipe made a big difference, also pushing the tight clip along gently with the screwdriver tip. These are the clips 9.8mm to 10.4mm:

https://www.ebay.co.uk/itm/222287989370?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=POBDckFASF2&sssrc=4429486&ssuid=hkXEB8tRRti&var=&widget_ver=artemis&media=COPY
« Last Edit: July 11, 2024, 04:08:14 PM by JezzaPeach »
1972 CB500/4 K1 Gold
Wanted: my 500/4 UGP96M
from 1975-78. Garnet Brown.

 

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