spark plugs

[tjfisher30]

im sure ive read a thread on this i just cant find it so here it is again. so has anyone had i pulg that was no good from the start i didnt put this in i got the bike in bad shape and slowly putting it back together but i had her running today thanks to T.C. and andreas for some parts but anyway was running on three cyl. so i pulled #2 plug didnt seam to be firing (cold pipe) did a compession test all good there coil read out good so i swap 1 and 2 plugs now number one is cold pipe so i take it lug is bad now for the real ? should i keep with the ngk's or with a different brand and what brand a part # ?

Oh ya does anyone have a extra snorkle for the air box that they dont need i just notice i dont have it on my air box with out it the air box i usless

[dofjr]

i have a air box ill part with $10 plus the cheapest shippin i can find
dofjr@yahoo.com

[mro]

Yamaha recommends either
NKG BP6ES or Champion N-8Y

Rare to find a "bad" new plug, but happens.
Can pull offending plug, put back in wire and set plug on head.
Crank engine to see if plug has spark.


mro

[HobbyMan]

The gap could be off. Once or twice on my old chevy's(350 and a 454) I have forgot to set the gap on one of the 8 plugs. Also, don't use the cheapo gauges at the counter. Get a good HQ feeler guage.