richwrench
Well-Known Member
OK - I've always been an NGK guy since the late 70's when my Kawi dirt bike wouldn't run on anything else, but this past week I've had a change of heart. A month or two ago I went through my carbs & replaced an air cut-off valve (thanks Mark) & did a thorough cleaning - the 'MAX ran AWESOME, but sometimes at idle when it was hot enough for the fan to be on I had an erratic mis-fire at idle. Couldn't pin it down to a specific cylinder & couldn't change it with carb adjustments. I only had a couple thousand miles on my NGK DPR8EA-9 plugs & a new set of of NGK wires, so you would think the ignition is good-to-go, right? Well, I had a similar prob with my F150 a couple of years ago, & NONE of the double-platinum this or super-iridium that would cure the problem. So I went with a basic, cheap, COPPER spark plug & it's run perfect ever since. COPPER is one of the best conductors of electricity in the world - it may not last as long as platinum, but it sure out-sparks it! Every night this week I've been running the 'MAX hard & when I roll into my garage & park it on the side stand while still running & the fan is on my tachometer is FLATLINED at 1000 rpm - never run so smooth since I've owned it. I gaped the plugs to .030" & I noticed the center electrode is a larger diameter than that of the NGK. The girls are right - bigger is better !
I hereby declare Champion RA6HC spark plugs are the most superior plugs anybody can buy for their VMAX! What do you guys prefer for plugs?
I hereby declare Champion RA6HC spark plugs are the most superior plugs anybody can buy for their VMAX! What do you guys prefer for plugs?