Spark Plug Defect?

Spark Plug Defect? 18 Oct 2023 10:31 #890608

daveo Topic Author Offline Premium Member Posts: 2770 Thank you received: 636	The ceramic post on one spark plug easily spins around on the body. There are no other visible irregularities. Should the spark plug be used, or rejected as defective? Short video below: photos.app.goo.gl/vtzhU9eKyA96jLKP9 1982 KZ1100-A2
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Spark Plug Defect? 18 Oct 2023 11:25 #890610

Nessism
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Looks bad to me. I'm no expert, though.

One thing, those plugs are resistor type, so be sure that you are not using resistor plug caps or resistor wires when running them.

Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/forum-index/faq-wi...owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread

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Spark Plug Defect? 18 Oct 2023 11:39 #890613

Wookie58 Away Moderator Posts: 3230 Thank you received: 1821	I suspect you will loose compression through there and it may even blow the centre out if you get excited, should be "crimped" tight 1982 KZ1000 Ltd www.kzrider.com/forum/11-projects/617631...-82-begins?start=192 kzrider.com/forum/forum-index/faq-wiki/6...-fault-finding-guide The following user(s) said Thank You: daveo
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Spark Plug Defect? 18 Oct 2023 11:39 #890614

sf4t7 Offline Sustaining Member Posts: 417 Thank you received: 258	In 45 years, never seen the ceramic spin like that. Throw it away. Scotty 1974 Z1A 1015 welded Z1 crank Andrews 1X Cams Delkevic 4 into 1 The following user(s) said Thank You: daveo
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Spark Plug Defect? 18 Oct 2023 13:34 #890626

Nerdy Offline Sustaining Member Posts: 1010 Thank you received: 382	I would ask the manufacturer: they should be able to tell you for sure. If it's wrong/defective, they might also want to investigate if it's a one-off or if there was a bad batch. ~~1979 KZ400~~ Gifted to a couple of nephews 1967 Yamaha YCS1 Bonanza 1980 KZ440B 1981 Yamaha XT250H 1981 KZ440 LTD project bike 1981 GPz550 2013 Yamaha FZ6R The following user(s) said Thank You: slmjim+Z1BEBE, daveo
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Spark Plug Defect? 18 Oct 2023 14:33 #890628

Kelly E Offline User Never Give Up. Never Surrender Posts: 408 Thank you received: 310	Could also be a counterfeit plug. The Rust Bros. Garage Collection 1974 Honda CB 550 K0 1975 Honda CB 400F Super Sport 1977 Kawasaki KZ 1000 LTD 1980 Suzuki GS 1100E 1981 Suzuki GS 1100E 1982 Honda CB 900F Super Sport 1983 Honda CB 1100F 1984 Honda Sabre 700 1984 Honda Interceptor 1000 1994 Kawasaki ZG 1000 Concours And more The following user(s) said Thank You: slmjim+Z1BEBE, daveo, Wookie58
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Spark Plug Defect? 18 Oct 2023 16:02 #890634

TexasKZ Offline Platinum Member Posts: 7245 Thank you received: 2078	I would want my money back. 1982 KZ1000 LTD parts donor 1981 KZ1000 LTD awaiting resurrection 2000 ZRX1100 not ridden enough The following user(s) said Thank You: daveo
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