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Post by alanc on Sept 28, 2021 10:03:45 GMT
Px 125 with 150 barrel starts first kick with new plug starts about 3 or 4 time in a row then won't start after that. Put another new plug in and it starts first kick again for another 3 or 4 starts then won't start again. Any ideas please
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Post by alan34 on Sept 28, 2021 10:43:05 GMT
Hello there is your plugs fouled up with oil or black soot after starting.
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Post by alanc on Oct 1, 2021 19:23:26 GMT
No it was so I put a leaner idle jet in and the same thing starts 3 or 4 times first kick then refuses to start
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Post by alan34 on Oct 4, 2021 16:38:18 GMT
Hello there when it doesn't start is there a good spark. possible coil breakdown .
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Post by alan34 on Oct 4, 2021 16:42:56 GMT
Hello just reading another question on vespa .org someone had trouble not raving up cause was the pick up on ignition good luck with it alan.
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Jock
High Number
Posts: 184
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Post by Jock on Oct 14, 2021 16:57:40 GMT
Could be the CDI , when breaking down they are normally ok from cold ( but not always ) when warm or hot ( wont start )
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L4NFF
2nd Class Ticket
72 Vespa GTR, 63 Lambretta LI 125
Posts: 18
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Post by L4NFF on Oct 15, 2021 0:36:45 GMT
If your plug is wet when you take it out it could be flooding and the changing of the plug helps remedy that. It could also be as mentioned above the CDI, these can be difficult to diagnose until they die altogether. It could also be the other way where it is fuel starved and the changing of the plug enables the float chamber to fill up again?
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Post by alanc on Oct 15, 2021 19:08:54 GMT
Have put in a mid range idle jet and that seems to be working OK she's start first or second kick every time this week
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