CANNOT START 1959 G3LS

Information relating to the Matchless G3 or AJS Model 16 350cc Heavyweight
Andy G
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Location: Aberdeenshire UK

Re: CANNOT START 1959 G3LS

Post by Andy G »

If a bit of choke in third made the engine run better, it would suggest it was running lean when on main jet. Doesn't sound like it, so I'd try adjusting the retard lever while on a steady throttle in third. If it improves things then timing is out. Too much advance can give similar symptoms to running too lean.
Bombling contentedly around rural Aberdeenshire
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jackstringer
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Re: CANNOT START 1959 G3LS

Post by jackstringer »

Andy G wrote: Tue Jun 27, 2023 11:12 pm If a bit of choke in third made the engine run better, it would suggest it was running lean when on main jet. Doesn't sound like it, so I'd try adjusting the retard lever while on a steady throttle in third. If it improves things then timing is out. Too much advance can give similar symptoms to running too lean.
Would this not be in the auto advance retard era?
Andy G
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Posts: 362
Joined: Mon Jun 01, 2020 9:42 am
Location: Aberdeenshire UK

Re: CANNOT START 1959 G3LS

Post by Andy G »

No idea tbh, if so then that's where I'd look next..advance bob weights freely moving?
Bombling contentedly around rural Aberdeenshire
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