SOHC.co.uk Forums > CB350/400
Fine tuning?
McCabe-Thiele (Ted):
I have always used some sort of fuel additative and SUL petrol. Initially I used Wynns Dry Fuel, Octane Revivers now I use a Fuel stabalzer after having issues with petrol during lock down in our car.
I'm now using this Sta-bil as recommended by a member - a bit early to say how good it is from my personal experience. That said I have not had any issues with blocked jets or poor idling either with my Honda or my XJ900 that I only used in the summer for over 10 years.
https://www.ebay.co.uk/itm/166088595455
Athame57:
--- Quote from: ComfySofa on February 25, 2024, 08:01:29 PM ---It has been in there yes but, I've taken it out around the block once a month.... Is there anything I can chuck in there to clear it out...
--- End quote ---
I always run my carbs dry if the bike is going to stand even just a few days, not that I know it solves everything.
ComfySofa:
Seems to be the way from what i can see....well, can i chuck that adititive in the tank with the fuel and run it...or am i stripping the carbs down!?
K2-K6:
--- Quote from: ComfySofa on February 29, 2024, 11:15:29 AM ---Seems to be the way from what i can see....well, can i chuck that adititive in the tank with the fuel and run it...or am i stripping the carbs down!?
--- End quote ---
Adding stabilizer now won't hurt it, so safe to dose as recommended then gauge effects.
Firstly though, stsrt from cold, run 30 seconds, switch off .... now check each exhaust for temperature, just with your hand to see if they are all running. A cold one shows that cylinder out/not running .... which will give you the pulling away and idle problems you described.
Initially if that's the case, pull that plug to inspect and check its sparking as a first intervention. If wet or gummy, clean then check sparks ok, refit and try it again.
McCabe-Thiele (Ted):
It might be worth draining the tank down - add half a gallon of fresh fuel and adding a full dose of injector cleaner. The cleaner In theory should break down any of the petrol degrading scale that forms. It might need a short run to do it's work.
Easier than a carb strip down. I had 10 galls of fuel that had turned bad during lock down in our car.
The previous reply is a good shout.
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