Forum

[Alan R]

Hi guys------CAFEMAN, you're not wrong there !! You pays yer money and makes yer choice..

[Leon Novello]

Well, SIGH! I suppose some of us are just plain lucky, and some of us are not.I have at least three brand new NGK standard plugs which failed after approximately 50kms, I think one was no good from the start; it would not idle properly, but fitting another new plug fixed that. I once had a 1 litre ice cream container nearly full of plugs from my 1969 Yamaha YL1 100cc two-stroke twin (which were notorious spark plug destroyers)they were goosed after about 300kms. If only iridium plugs were around in those days; another SIGH! So how many of you home mechanics have torn your hair out trying to fix a fault in your bike`s engine, but kept ignoring the spark plug: because 'it is a brand-new one', only to find that the problem WAS the new spark plug?

[simon]

There was talk of fake NGK's on the market which might be the cause of the 50km failures. My friend with the 1935 Panther runs a mica insulated Lodge H1 of a similar vintage in it which works perfectly and has ridden him the length of the majority of New Zealand and back. I do remember having the loan of a GT550 Suzuki triple in the late 70's and it constantly fouled centre plugs. That of course was a tuning issue. My feeling is that the spark plug is a bit like a canary in a coal mine and if you are chewing through them, unless they are fakes, there are tuning issue to be addressed.

[Johnb]

Just to stoke the flames a bit, I use a champion n3. In my opinion better than the br8 I used to use.
Hope thats not created to much grief!
John B