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z650 running problems

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slomogadgie
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Posts: 3
Joined: 21st Aug 2019
Location: Peterhead

z650 running problems

#1 PostAuthor: slomogadgie » Wed Aug 21, 2019 4:40 pm

Hello
I recently bought a 1980 z650. It's condition is not too bad. It seems to start easy enough. It's fitted with a V&H 4-1
It runs okay, but is a bit spluttery in the higher revs (over 6500ish) and backfires when I'm slowing down. Power is not great, but that might be because I'm used to newer machines...and forgotten how they were when I was a lad.
There is a possible culprit in that I'm noticed one of the outside downpipes is not bluing, whilst the others are.
Any ideas on possible fault?
Thanks
Brian
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kev edwards
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Posts: 2051
Joined: 3rd Apr 2009
Location: leverington UK

Re: z650 running problems

#2 PostAuthor: kev edwards » Wed Aug 21, 2019 5:37 pm

give it a service, points plugs, valves, cam chain tension the whole shooting match then see if it still does it .
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Pigford
I'm on prescription!!
Posts: 10566
Joined: 2nd Jan 2006
Location: Hampshire Coast UK

Re: z650 running problems

#3 PostAuthor: Pigford » Wed Aug 21, 2019 5:47 pm

Carb rubbers leaking? Fuel/float levels?
And on the 7th day... Zeds were created!
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slomogadgie
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Posts: 3
Joined: 21st Aug 2019
Location: Peterhead

Re: z650 running problems

#4 PostAuthor: slomogadgie » Wed Aug 21, 2019 8:49 pm

Thanks for the ideas
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