SOHC.co.uk Forums > CB350/400
starting issues
TrickyMicky:
Easy Start----- YEUK!!-- The work of the devil. The knocking noises I've heard over the years from enthusiastic use.
McCabe-Thiele (Ted):
--- Quote from: TrickyMicky on May 18, 2026, 03:16:40 PM ---Easy Start----- YEUK!!-- The work of the devil. The knocking noises I've heard over the years from enthusiastic use.
--- End quote ---
Especially on a Diesel Engine.👍
McCabe-Thiele (Ted):
I'm making some basic assumptions such as full choke with no throttle on cold start.
K2-K6:
--- Quote from: TrickyMicky on May 18, 2026, 03:16:40 PM ---Easy Start----- YEUK!!-- The work of the devil. The knocking noises I've heard over the years from enthusiastic use.
--- End quote ---
Its just basic testing to gauge effect. What it can do is show there's impaired or low flow from idle fuel circuit that's supposed to be supplying at this juncture.
Improvement with "assistance" would indicate that the idle jet circuit needs further inspection ...... which no-one wants to do on these :)
The covered airbox test too, if there's notable improvement then again it suggests that the increase in inlet vacuum is more effective in pulling fuel up through the jets, initially.
Rayzerman:
Many seem to have difficulties with these 350's.... I've had my own share of grief with getting these carbs bench sync'd then set properly on the bike.... by chance has anyone decided to go up a size on the idle jets? And of course, did it help or hinder?
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