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Post by steve on Jan 27, 2016 14:27:02 GMT -5
NYCSP0007 check out the video with the timing light. John I watched it, but I really don't know what I am looking at. Does it have no advance at low RPM, and it advances from there? |
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Post by steve on Jan 27, 2016 14:11:43 GMT -5
I don't understand why it would run fine with an old spark plug, but would not start, but that sure seems to be the case. I put a new plug in, and it's starting fine.
Weird, and I feel kinda dumb. Glad to have fixed it.
Has anyone had this issue with a spark plug?
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Post by steve on Jan 26, 2016 19:18:45 GMT -5
What you are describing does not sound like an engine issue. It sounds like a CVT issue. Check the variator nut, and I wonder how many miles are on that belt?
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Post by steve on Jan 26, 2016 18:16:02 GMT -5
I just noticed you have the stock CDI due to kickback. Believe it or not, stock CDIs are advanced, just not as much as performance ones. Now tvnacman has an advancing angle CDI that starts out not advanced, then advances as rpms increase. Helped with mine and several other's hard starting bbk issues. Which CDI is that? Can you link it? BTW, the new plug seems to have solved it. I left it in the cold all day, which would always trigger an episode, and it fired right up. It will not crank at all with a performance CDI |
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Post by steve on Jan 26, 2016 16:59:40 GMT -5
My impact wrench doesn't turn my variator. I hate rapping my knuckles with wrenches.....
I use an impact to take my CVT apart. There are not specialty tools for 50cc variators. They don't have the screw holes like 150's.
I tried for 2 hours one day to change my belt without an impact.
I went and bought a compressor that day. I hope I am forgiven.
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Post by steve on Jan 26, 2016 16:42:29 GMT -5
I'm curious, are you sure you tightened the bolt on the variatior really tight?
That screeching noise sounds like when I have forgotten to tighten the variator bolt with the impact.
Also, im curious as to when you replaced the belt, and what size belt you used?
Do you have 10" tires?
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Post by steve on Jan 26, 2016 15:39:38 GMT -5
Even less reliability . . and enhanced odds of crankshaft bearing failure.
I already changed the crank. It's a stroker. I'm just trying to figure out the starting issues. I did run 10g wire, from battery to starter. It turns fast. I will check valves again, but its only been like 60 miles, and it idles, and runs great, once it starts. I did play with the air intake. That's how I jet it, normally. |
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Post by steve on Jan 26, 2016 13:53:14 GMT -5
Even less reliability . . and enhanced odds of crankshaft bearing failure.
I already changed the crank. It's a stroker. I'm just trying to figure out the starting issues. |
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Post by steve on Jan 26, 2016 12:19:33 GMT -5
I have a 50 with 40K miles on it. I have another one that is modded up to 100cc, and it is ridiculously quick. It has so many mods that it is less reliable. Stock, they are probably pretty equal in reliability.
Your point about lights is backward: AC lights are only on when the engine is running. DC systems sometimes have lights that come on with the key, but you don't want to elrun the lights on these little batteries.
I have enjoyed teaching myself how to work on these scoots. I will probably move up to a 150 here soon. But, I will end up modding it to the max, so it runs like a 250. Ha.
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Post by steve on Jan 26, 2016 11:08:48 GMT -5
I had been putting some slightly used plugs in there when I swapped them. I just got some brand new plugs, and put one in. It has been firing right up today, but it has gone days before with no issues. I guess it's fouling plugs? But that's the same size jets I had when I had a 50mm bore on it.
Another thing I thought of. Do I need a larger carb than 20mm? Could that be the reason for the starting issues? Should I use the 150cc carb? And, will the 150cc intake manifold fit on a 50cc?
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Post by steve on Jan 26, 2016 10:53:54 GMT -5
Hi, ya'll. Haven't been on the board in a while, hope everyone is OK. I have an issue, and cannot figure it out. I put a 52mm Hoca BBK and head on my scoot. It runs great, and purrs like a kitten. My problem involves actually getting it started. I have a high torque starter, and it turns over fine. Valve adjustment is good, and I have stock CDI on it due to kickback. The problem is that I have to turn it over forever to get it to start. Sometimes, it will start right up. I have a 20mm carb, and I messed with changing the idle jets, and it will start up fine for a week, or so, but then go back to taking forever. I will kill the battery, and have to get a jump start when this starts happening.
One thing I noticed, when I'm having to crank it forever, if I take the spark plug out, and put a new one in, it will fire right up, but the old ones are not fouled. I try them out, and they spark. I have a 94 main jet, and a 35 idle right now. Plug is nice, chocolate brown.
What am I missing? She's got spark, and runs absolutely fine once she cranks. It's turning over fine. When I jump it with a car, it will spin really fast, and still take forever. Is it flooding? 94 main does not seem too large for a 52mm bore. It performs best with a main over 92, but under 105. I got the plugs looking nice.
Hit me with suggestions.
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Post by steve on Dec 19, 2015 21:12:53 GMT -5
that wasn't my quote. I didn't do any of that. sorry, it was late. steve did that, not you. That quote wasn't mine, either. I did talk about running all new wiring, but that specific post is not mine. I would definitely check your regulator. Check the voltage at the battery, while the scoot is running. |
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Post by steve on Dec 19, 2015 21:10:17 GMT -5
Good call, GEH. I did not even consider it being a DC scoot.
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Post by steve on Dec 19, 2015 21:07:28 GMT -5
Thanks, I thought the oil pump pushed the oil out of the dipstick cover.
A clicking noise on the fan side could be the stator pickup coil has come loose, and is bouncing off of the magnet on the outside of the flywheel. I had that happen, and it made quite the noise.
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Post by steve on Dec 19, 2015 20:40:30 GMT -5
The battery should be reading at least 13.5v while running.
Ive had the stator pickup coil come loose, and start hitting the magnet on the flywheel. It made a noise, kind of a whining, and would sputter.
The thing that doesn't add up to me is the white smoke.
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