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Piston noise 08 Dec 2022 19:07 #877644

  • Fox
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Hello,

after 30mm of ride when the engine is hot i can hear a fiction from the first piston.
The spark plug is wet and black. I have white smoke from the exhaust particulary at starting.

Just the rings to replace or overbore ?

What do you think ?

Thank you
Fox
1978 KZ1000-B2 LTD
1977 kz1000-B1 LTD

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Piston noise 08 Dec 2022 19:38 #877645

  • Wheelhop
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Could it just be a fouled plug?  
1978 KZ 1000B (73 tribute)
1977 KZ1000 project
1976 KZ 900
1976 KV 75
1976 Honda Elsinore MT250
1974 Z1 900 project
1971 Honda CT70

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Piston noise 08 Dec 2022 19:49 #877646

  • Fox
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I ever try an other carb or other plug ... always that sound when the engine is hot
1978 KZ1000-B2 LTD
1977 kz1000-B1 LTD

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Piston noise 09 Dec 2022 04:34 #877650

  • Wookie58
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I would suggest you need to get in and have a look, before you can decide "rings or re-bore" you need to measure up. However if there is mechanical noise I would investigate sooner rather than later to avoid possible terminal damage (is there any metal in the oil?)

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Last edit: by Wookie58.

Piston noise 09 Dec 2022 05:41 #877655

  • hardrockminer
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I think it's time to check compression.
I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.

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