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Effects of worn reed valve petals?
Posted:
Tue Mar 16, 2021 3:37 amby Scoot655
Much needed help required!
What's the effect of worn reed valve petals on a tuned lambretta engine? I`ve got the carb settings to ball park figures but I'm struggling with it still feeling lumpy on pick up and occasionally cutting out for no reason?
Many thanks,
Paul Marshall
Re: Effects of worn reed valve petals?
Posted:
Tue Mar 16, 2021 9:43 amby Tractorman
Could be, I had a broken one and the scooter wouldn't start.
Re: Effects of worn reed valve petals?
Posted:
Tue Mar 16, 2021 7:05 pmby Toddy
Could be electrical ?
Re: Effects of worn reed valve petals?
Posted:
Fri Mar 19, 2021 5:16 pmby hullygully
Can you stick a camera down your manifold to check petals?
but I'd check electrics too, usual suspect
Re: Effects of worn reed valve petals?
Posted:
Fri Mar 19, 2021 6:47 pmby Norrie Bodge
Scoot655 wrote:Much needed help required!
What's the effect of worn reed valve petals on a tuned lambretta engine? I`ve got the carb settings to ball park figures but I'm struggling with it still feeling lumpy on pick up and occasionally cutting out for no reason?
Many thanks,
Paul Marshall
Try another CDI(Ducati Type) 1st
Re: Effects of worn reed valve petals?
Posted:
Sat Mar 20, 2021 12:26 pmby coaster
Scoot655 wrote:Much needed help required!
What's the effect of worn reed valve petals on a tuned lambretta engine? I`ve got the carb settings to ball park figures but I'm struggling with it still feeling lumpy on pick up and occasionally cutting out for no reason?
Many thanks,
Paul Marshall
They should be good for a few thousand miles, how long have they been in? itll only take 10 minutes to remove them for a proper check
Re: Effects of worn reed valve petals?
Posted:
Wed Mar 24, 2021 8:57 pmby Leotech
If reeds were broken it would be very difficult to start on the kick, they could be spit, but like someone says, just whip block out to check reeds visually.
The newest type Ducati CDI seem to have a rev limiter at around 7000 rpm, I found that out on a Vespa site and on the dyno when a pals Lamby hit a wall at 7000 rpm ish.