Low compression after rebuild, won't start

Information relating to the Matchless G5 or AJS Model 8 350cc Lightweight
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simonh
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Joined: Thu Jul 15, 2021 7:12 am
Location: Cheshire

Re: Low compression after rebuild, won't start

Post by simonh »

Apparently, I am not authorised to send private messages.
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ajscomboman
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Re: Low compression after rebuild, won't start

Post by ajscomboman »

simonh wrote: Tue Jul 27, 2021 5:16 pm Apparently, I am not authorised to send private messages.
Being a non member you can't I'm afraid however Paul can send you one.
SPRIDDLER
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Re: Low compression after rebuild, won't start

Post by SPRIDDLER »

clive wrote: Mon Jul 26, 2021 9:56 pm
Samuel wrote: Mon Jul 26, 2021 11:55 am
SPRIDDLER wrote: Mon Jul 26, 2021 11:08 am Maybe Clive could invite answers as to what the problem is likely to be by making it a Quiz question? ;) .
Are you suggesting that Clive is in some way related to the Quizmaster? :o
Not related but I do have a telepathic communication channel. Perhaps Spriddler could PM me with his proposal......
Is a PM really necessary? I thought you'd already know as you're telepathic and I've been thinking deeply about it for days.
'There is a tide in the affairs of men
Which taken at the flood............'
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clive
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Location: LONDON UK

Re: Low compression after rebuild, won't start

Post by clive »

Clearly my telepathic powers are pathetic.
clive
if it ain't broke don't fix
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clanger9
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Re: Low compression after rebuild, won't start

Post by clanger9 »

Thanks to the forum, I've established contact with Simon. I'll have a look on Saturday and report back...
1989 Moto Morini Dart 350
1993 Ducati 750SS
simonh
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Posts: 38
Joined: Thu Jul 15, 2021 7:12 am
Location: Cheshire

Re: Low compression after rebuild, won't start

Post by simonh »

Dear All, Paul got it going, so I am very grateful for his help and expertise. Turned out that there were 2 further problems. While the engine was timed mechanically correct , I had set the Wipac ignition to the wrong ramp on the points cam. The other issue was a duff spark plug that worked outside the engine but not when installed. I did try several plugs but with the other ignition problem, the result was the same, so I had ruled out the plug. Thanks to all for comments and support and especially to Paul, I had run out of ideas: The bike now starts first time.
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REW
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Re: Low compression after rebuild, won't start

Post by REW »

Good news Simon and thanks for telling us the outcome - doesn't always happen. Now ride the thing and er, join the club 'cos you can see it makes sense!
Ron

1951 Matchless G3L thumping round the Durham Dales.
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clanger9
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Re: Low compression after rebuild, won't start

Post by clanger9 »

It's running! :D
1989 Moto Morini Dart 350
1993 Ducati 750SS
SPRIDDLER
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Re: Low compression after rebuild, won't start

Post by SPRIDDLER »

Well done, Paul.

:beer:
'There is a tide in the affairs of men
Which taken at the flood............'
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dave16mct
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Re: Low compression after rebuild, won't start

Post by dave16mct »

Excellent! Great result.
Dave
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