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Re: Lammy starts but dis and backfires!

Posted: Wed Jun 10, 2015 10:29 pm
by alanscottj
phil23fair wrote:Damaged reed?
Took carb off at side of road, looked into inlet and couldn't see anything obvious, won't knowfor sure until I get her home.

Re: Lammy starts but dis and backfires!

Posted: Wed Jun 10, 2015 10:30 pm
by alanscottj
Timbo wrote:Stator I would say...if it's starts/ticks over its not carb related...
When you say stator, do you mean it might be loose and that has put timing out? Or something else?

Re: Lammy starts but dis and backfires!

Posted: Wed Jun 10, 2015 10:40 pm
by storkfoot
alanscottj wrote:Thinking about it it's been playing up for a few days, like little backfires when I'm riding, more like little farts than the big backfire I had tonight :D
Don't just ignore such symptoms, they are very very unlikely to ever just go away.

It could still be your jetting but, if it was me, I'd start with my ignition first'

Re: Lammy starts but dis and backfires!

Posted: Wed Jun 10, 2015 10:50 pm
by alanscottj
storkfoot wrote:
alanscottj wrote:Thinking about it it's been playing up for a few days, like little backfires when I'm riding, more like little farts than the big backfire I had tonight :D
Don't just ignore such symptoms, they are very very unlikely to ever just go away.

It could still be your jetting but, if it was me, I'd start with my ignition first'
Yeah, I know, I was Hong to look at it at the weekend :oops:

Re: Lammy starts but dis and backfires!

Posted: Wed Jun 10, 2015 11:12 pm
by lambro
Stator problem.
I had the same and it was a broken wire on the stator.
Would start and tickover fine, but just bog down when revved.

Shaun.

Re: Lammy starts but dis and backfires!

Posted: Wed Jun 10, 2015 11:15 pm
by Burnside
Mate had the same issue, he had lost 2 of his reed petals

Re: Lammy starts but dis and backfires!

Posted: Thu Jun 11, 2015 7:37 am
by mick1
Swop the stator for a known good one, even if it means having to buy another one (believe me you'll need it at some point !!). Same with the CDI.

It may be that when you get the flywheel off there is something obvious (loose wire/stator loose) but like I say a spare stator is an essential to carry as a spare. There is no way of checking the CDI other than changing it.

The stator can be checked with a resistance meter, but even if showing good results this does not mean it's working correctly. bad results obviously means it's goosed.

Re: Lammy starts but dis and backfires!

Posted: Thu Jun 11, 2015 9:39 am
by Architecten
From recent experience I'd say its the stator. LT coil breaking down?

Re: Lammy starts but dis and backfires!

Posted: Thu Jun 11, 2015 10:23 am
by dapper
If it's kicking out a lot of spitback through the carb at idle, then it's probably a reed come loose.

Re: Lammy starts but dis and backfires!

Posted: Sat Jun 13, 2015 8:41 pm
by alanscottj
Couldn't get the scoot home till today as I have been away, left it in a mates garden. Just got it off the back of a lorry, took it into the garden, kicked her over, started first kick, went round the block spot on!!! The enigma that is the Lambretta :roll: