hey!,
i was tuning the bike and could not shake this hestitation at high gear, low speed, wot and mid rpm (before it gets on the pipe) it felt like ignition but i thought i was there and should try jetting anyway. so i went from 155main and all the clip position to 158 and 152 mains.
the bike takes off awesome if you go 1,2,3,4,5,6 and is great when your on the pipe but say you cruising and hit some boggy sand and go wot (high engine load situation) it sorta misses and hesitates (doesnt backfire or pop), enough for me to get off the throttle asap.
tests came back
coil primary .5 - .9 (.28 - .38) factory ohms
coil secondary O/C- O/C ( 4,700 - 7100) factory ohms
coil plug 5.19 ohms
coil plug and lead 5.22 ohms
pickup coil 117 (94-140) factory ohms
pickup gap .19 thou
charging coil 18 (13.7 - 20.5) factory ohms
spark plug gap .6mm
so it appears to be the coil, and whats worse is that it was wired up backwards from the dealership !! that may have caused its short life, it also sucks that im trying to tune a new setup with this happening.
i did a plug chop to see what its burning like but when i took off 1,2,3,4 i had to stop so i pulled clutch/shut off and did it again (on the same new plugs). ( due to loose dirt it did not take long to get though the gears so not much engine load)
chop was done on 155mains clip in middle position on oko 30s avgas/94 mix
what is a good coil to get ?? and does 141/141psi comp on 20 cc domes, ASL with dune/play port sound normal ?
thanx guys.