SOHC.co.uk Forums > CB350/400

Hello All..new to the forum and new to bikes..400 4 Carbs overflowing..

<< < (3/5) > >>

K2-K6:
Yep I noticed that in our family "bike" a VW diesel, it will do something like 40miles more to a tank on some brands than other low sulphur stuff and I heard that the pumps last longer with sulphur so aim to buy that and AVIA fuel I bought in france was the best for range that I've seen (apologies for off topic disesiel! discussion).

I guess this may not affect SOHC stuff so much but may impact on newer Injected bikes with pumped fuel supply.

vivvov:
Cheers marineboy..got th weekend coming up to check the 0 seals and polish the valve seats..

marineboy:
You are most welcome, I do like reading stories in motorcycle magazines where someone states " its been laying in my garden uncovered for 20 years, I put fresh petrol in it & charged the battery & away she went third kick" yeah right o!!!!!If mines been laying around for 20 minutes it doesnt go third kick!

From my experience as you can see,what I did for one carb I ended up doing for all four carbs. As long as its not gushing out petrol anywhere dangerous ie; onto the exhaust underneath & the flooding carbs are not causing you to sputter & stop everywhere IMO I would try & ride it a few times & see if things improve, keep on turning the fuel tap off on the journey and letting her run to the point whereby she is begging for petrol, then put the tap back on to fill the bowls back up again, she may just need a bit of encouraging to get things moving...... But do watch where you are going when you are fiddling around for the petrol tap!!!!!!
Regards
as always
Marineboy

vivvov:
Hello All

Thought I'd update.
Just polished up float valve seats and needles of 1 and 2 carb...leakage reduced to a couple of drips from number one..good stuff....
Then just taken out no. 3 float valve and Marineboy was right, no 3's o-seal is in bad shape (and I'm guessing the minor drip on no 1 carb is due to o-seal).
So it's a combo of the two.  One I can sort out with polising, the other I can sort out with new
o-seals.

Don't want to come across like a Scourge but anyone got any thoughts on sourcing o-seals as opposed to the whole float valve kit x4.

Vivvov

Bryanj:
In theory the "O" ring is the same as the 500/550 and the original part number was 16171-551-004 IF you can find any old stock anywhere(try westernhillshonda.net) or a petrol proof 5.7x1.3 mm "O" ring if that size exists anywhere except Honda

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