Spark Plug problem - SV650.org

11-10-11, 07:59 PM

Hi guys i just want to know what colour the plugs should be, this sounds dumb, but in my experience a light brown colour has always indicated a sound mixture, however my haynes manual says that most modern bikes run on a pale grey/brown colour.

My k9 sv has an MTC gp pro slip on and after taking the plugs out to check the gaps i noticed all four was very light grey, edging on white, i have avoided riding it from worrying.

11-10-11, 08:27 PM

This kind of thing, does look a lil grey yep.

11-10-11, 10:10 PM

Yeah mines a tad lighter than that i'd say

11-10-11, 11:16 PM

Properly ok unless it looks deformed. Post a pic.

embee · 12-10-11, 04:14 PM

Happened to do a service on my car today. The plugs look like

which I'd say is as near text book perfect as you'll see.

Modern plugs are engineered to run a bit hotter than in days of yore, and engines run generally cleaner than Mr. Haynes fondly recalls.

Those plugs are 30k mile NGK iridiums. Look good for another 30k to me.

12-10-11, 04:32 PM

Yeah the above pic^^ is what i'm used to seeing a light brown colour, i'll take a pic tonight and see what you guys think

11-10-11, 07:59 PM	#1
todsky426 Guest Posts: n/a	Spark Plug problem Hi guys i just want to know what colour the plugs should be, this sounds dumb, but in my experience a light brown colour has always indicated a sound mixture, however my haynes manual says that most modern bikes run on a pale grey/brown colour. My k9 sv has an MTC gp pro slip on and after taking the plugs out to check the gaps i noticed all four was very light grey, edging on white, i have avoided riding it from worrying.

11-10-11, 08:27 PM	#2
beabert Guest Posts: n/a	Re: Spark Plug problem This kind of thing, does look a lil grey yep.

11-10-11, 10:10 PM	#3
todsky426 Guest Posts: n/a	Re: Spark Plug problem Yeah mines a tad lighter than that i'd say

11-10-11, 11:16 PM	#4
beabert Guest Posts: n/a	Re: Spark Plug problem Properly ok unless it looks deformed. Post a pic.

12-10-11, 04:14 PM	#5
embee Member Mega Poster Join Date: Jul 2003 Location: Warwickshire Posts: 2,801	Re: Spark Plug problem Happened to do a service on my car today. The plugs look like which I'd say is as near text book perfect as you'll see. Modern plugs are engineered to run a bit hotter than in days of yore, and engines run generally cleaner than Mr. Haynes fondly recalls. Those plugs are 30k mile NGK iridiums. Look good for another 30k to me. __________________ "Artificial Intelligence is no match for natural stupidity" Last edited by embee; 12-10-11 at 04:17 PM.

12-10-11, 04:32 PM	#6
todsky426 Guest Posts: n/a	Re: Spark Plug problem Yeah the above pic^^ is what i'm used to seeing a light brown colour, i'll take a pic tonight and see what you guys think

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