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Post by 90GTVert on May 27, 2013 10:46:44 GMT -5
I have nothing but four letter words for this scoot right now. Had a chance to get a test ride in while people are here to watch granny, but instead I kicked it over 150 times (not an exaggeration) and it fired up 2 times, about a second each. This thing needs so much fuel to get started and if it's not just right it will flood. Not sure if that's a weak ignition or maybe the timing sucks for starts. I have to have it as far retarded as the NCY stator will allow for best performance. The larger carb and ports and stuff that make it run hard at high RPM are not doing me any favors at kicking RPM.
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Post by stepthrutuner on May 27, 2013 11:46:21 GMT -5
From following the thread evidence seems point to ignition problems. Can you check the strength of the spark? (Gap jump?) Tried an iridium for this app?
Did you do a compression gauge read on it? You might try the low comp. ratio head for easier spark propagation.
I know you'll straighten it out. Good luck!
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Post by 90GTVert on May 27, 2013 12:01:37 GMT -5
I'll have to check the spark with the HEI tester. I just had it out and I can't even remember if it's an iridium plug. lol
Haven't done a compression test. New rings and piston, honed cylinder, 7:1 effective compression. Never bothered to check the psi, but I will.
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Post by 90GTVert on May 27, 2013 12:17:50 GMT -5
I think you called it Reg. When I kick it over with the HEI tester I get 0-1 spark. Just to be sure I remembered correctly, I used the same tester and kicked over a different engine I get a series of sparks. I think they're also louder sparks (hard to tell with little air and exhaust restriction on T1 making it even louder while kicking).
Not sure yet if it's something to do with the NCY ignition or maybe the coil. The coil is the first performance coil I ever bought for a scoot ("SS" from daywot on eBay), since this is my original scoot. That's gotta put it at about 6-7 years old.
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Post by 90GTVert on May 27, 2013 18:30:31 GMT -5
I swapped the coil first. That did nothing. I haven't been trying to start it, just watching the HEI spark tester, looking for a more reliable spark or sparks. I kicked the crap out of it to see a max of 35VAC on the charging coil, but usually more like 15V. I think that could be the issue. When I was checking T2's coil the other day, I got 90V. On the trigger wire, I see about 0.6V. T2's stock stator did about the same. Not sure if the NCY is weak because of it's design, or it's actually got a problem. Swapped in another CDI as well and again no improvement.
I'll prob swap in a stock stator/flywheel and see if it improves. I have another NCY in a box. Was hoping to sell it someday, but I may put it on and see if it does the same.
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Post by stepthrutuner on May 27, 2013 20:31:48 GMT -5
Damn, I'm sorry it's being such a bitch for you but it seems you're hound-dogging on the right trail. You could have a near wire failure too somewhere and those can be hard to find.
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