The BSA A7-A10 Forum
Technical (Descriptive Topic Titles - Stay on Topic) => Amal, Carburation, Fuel => Topic started by: agonda1 on 04.08. 2016 18:31
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compression good - valve guide / stem tolerance correct - plugs champion I82c - no blue smoke from exhausts - carb jetting correct - float level correct
Have dropped needle to lowest position ( 1 ) and this must be about right since the response from choke operation confirms.Wire brush plugs and away it goes.Return after a run and plugs are sooted up again - what's going on !
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Are you using lead replacement additive. There was an interesting article in this month's Star magazine by a guy who was finding oily deposits on his inlet valves and tracked this down to over-dosing with additive (Castrol).
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How does it run?
If it's rich at low speed, it probably has a worn out needle jet or maladjusted idle mixture screw.
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and this must be about right since the response from choke operation confirms.
What do you mean?