4stroker Posted September 12, 2007 Report Posted September 12, 2007 when i was assembling the top end of my RZ motor, the right power valve had a tiny amount of play side to side in its housing in the barrel. (about 1mm movement) the left one went in beautifully so i was a little concerned about the right one, but i had used all new seals etc and the through bolts were tight, so i slapped it all together anyway. now when i check my plugs after doing some plug chops, the right plug is always a little leaner than the left. its nothing major, one or two sizes up in main jet matches them up. im just not sure wether this is due to discrepancies in the crazy ass port job it has, or wether it is because of a leaky powervalve. would something leaking on the exhaust side even cause something like this? Quote
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