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Post by baggieboo on Oct 13, 2020 8:36:00 GMT
I have a 1969 Sprint 150cc. I have an ongoing problem that nobody seems to be able to rectify.
After about 40 minutes riding the scooter cuts out completely. Starts fine afterwards but will often do the same shortly afterwards.
I have been told there is nothing wrong, one place suggested increasing oil dosage. Losing confidence and patience. Personally I think it is a weight issue...I am 120kg.
Any help greatly appreciated.
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Post by alan34 on Oct 13, 2020 8:54:54 GMT
Hello this sounds like electrical.could be cd or wires to cd. ht lead.float in carb could be sticking.let us know how you get on cheers alan.
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Post by alan34 on Oct 13, 2020 8:59:49 GMT
Hello forgot to say take a spare sparkplug with you when it cuts out pull lead of plug put spare plug in cap hold near engine kick it over with ignition on to see if there is a spark if you have points could be these or condenser breaking down.if it sparks could rule out ignition.cheers alan.
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Post by baggieboo on Oct 14, 2020 7:55:39 GMT
Just been out with a passenger and it cut out after 5km. What is a cd by the way?
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Post by baggieboo on Oct 14, 2020 11:15:01 GMT
Did approximately 20km today, cut out just as I got home.
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peteb
2nd Class Ticket
Posts: 12
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Post by peteb on Oct 14, 2020 15:19:41 GMT
I had a similar problem on my 1977 125 t.s it would cut out ramdomly after getting hot. After replacing most of the other electrical parts (HT lead, CDI, stator etc..) in the end I replaced the wiring loom, and on removing the the exiting wiring I found it was in a right state with lots of possible candidates for earthing. It was a pain to do but I have not had the problem since although I have not been doing the same sort of miles.
How does your wiring look?
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Post by alan34 on Oct 14, 2020 15:29:13 GMT
Hello cdi is the box where the ht lead goes into.its on frame next to engine some are blue in colour and four wires going into it. a few people have had trouble with the wires as they can rust up or crack with age . Also check wireing on horn as this can cause trouble let us know how you get on cheers alan.
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peteb
2nd Class Ticket
Posts: 12
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Post by peteb on Oct 14, 2020 18:12:35 GMT
doesn't a '69 sprint have points and a coil rather than a CDI?
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Post by jackthekipper on Oct 15, 2020 7:01:15 GMT
doesn't a '69 sprint have points and a coil rather than a CDI? it certainly does unless its been converted to 12 volt |
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Post by baggieboo on Oct 15, 2020 11:20:47 GMT
So it doesn't have a CDI?
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Post by jackthekipper on Oct 16, 2020 7:20:08 GMT
 the blue box is the cdi |
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