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Old 24 September 2021, 05:00   #1
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Country: UK - Scotland
Length: 5m +
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Squeeking, noisy, vibrations at idle

Very squeaky and running badly at idle.

Just off idle (no Rev counter but anything over 6mph) runs and sounds great

I’ve cleaned the carbs once and completely rebuilt them with a rebuild kit.

It’s a strange noise and I’m not sure where to start looking.

Any advice appreciated

Videos bellow

https://youtu.be/E3DQQaG-FD8

https://youtu.be/UM_7JAjkP8k
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Old 24 September 2021, 07:09   #2
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Sure sounds like a bag of bolts! Sounds like a misfire to me. Try narrowing it down to see if it's an isolated cylinder and go from there.
Pull off one plug lead at a time (with insulated pliers!) and see if there's one that makes less difference than the other two.
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Old 24 September 2021, 10:40   #3
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RIBase
https://youtu.be/bsHCMJnRY9A

Maybe the carbs want tuning
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Old 24 September 2021, 10:59   #4
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Oh yeah she sounds horrific only on idle and low rpm. Once past 6mph purrs beautifully and and no vibration.

Happened all of a sudden and just wonít go away!

Driving me mad. Trying to get the carbs Tunned up tried various settings with no joy
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Old 24 September 2021, 11:35   #5
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If she's sweet off idle then sounds like a blocked idle jet on one carb. Do the plug trick first to isolate which one
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