SOHC.co.uk Forums > CB500/550
The actual fuel hight in these 550 K3 Carbs
deltarider:
You got me confused... what carbs is this about: 069A? 627B? 022A? 087A? or PD carbs?
McCabe-Thiele (Ted):
--- Quote from: nairb on May 22, 2026, 02:38:39 AM ---So I tried the method given above and found all 4 carbs seem to hold 27 to 27.5 ml. Just one carb was more than the others by .4 ml.
Then I tried putting a clear plastic tubing on each of the carbs. 3 were almost the same with one nearly 4.5 mm less than the others.
Is this an issue??.. Dont know, but I will try to adjust it so it's the same as the other carbs.
The Kawasaki is very sensitive to fuel level heights which is why I wonder if the honda is also
--- End quote ---
Whilst it might be nice to have them all the same, the fuel volume will vary slightly due to the bowl moulding variations.
Do you mean a fuel height difference of 4.5 mm or .45 mm? The former is not good, it will need adjusting
nairb:
--- Quote from: deltarider on May 22, 2026, 06:47:07 AM ---You got me confused... what carbs is this about: 069A? 627B? 022A? 087A? or PD carbs?
--- End quote ---
it says PD46A stamped on the side. The same ones that were on the bike when I bought it new.
I did have these all apart 2 or 3 years ago. It took a while to get them right back then. It starts and idles fine and has a smooth getaway. But starts to hesitate over 40+mph. A change of air filter (new one) made it far worse.
I did put on a new set of 4 into 4 exhausts from DSS a while ago.
deltarider:
PD46 carbs have a float level of either 12,5 or 14,5mm. Consult Honda documents!
Nurse Julie:
14.5mm float level on PD46a
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version