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Scooter

Tiny
BRIANIZZLE
  • MEMBER
  • 2007 ALL OTHER MAKES RECREATIONAL VEHICLES
  • 3,000 MILES
I have a 150cc moped (motorcycle) and oil tends to keep getting on tip of sparkplug internally on the gap, at first I was just riding rich for awhile than is started leaking oil on sparkplug what is the problem?
Monday, August 1st, 2011 AT 5:35 AM

12 Replies

Tiny
SATURNTECH9
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So this is a 2cycle engine?If so is it oil injection?
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Monday, August 1st, 2011 AT 5:42 AM
Tiny
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Also is the spark plug oil fouling out?
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Monday, August 1st, 2011 AT 5:44 AM
Tiny
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Its a 4 cycle engine. Before I was just running rich and getting black carbon deposits on the tip of the sparkplug, but lately my sparkplug has been getting oily wet and hardly driveable. I really hope its carburetor related id really hate to open the head and mess with valves
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Monday, August 1st, 2011 AT 6:02 AM
Tiny
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If your getting oil and not fuel then your looking at a ring issue. Are you sure your not just getting way too much fuel to the engine?
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Monday, August 1st, 2011 AT 6:39 AM
Tiny
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I hope that I am just getting too much fuel because I did have this case before when I was working on it but it changed due to me changing the needle pin placement and it hasbeen running rich so im gonna take the exhaust of and clean it with a wire brush
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Monday, August 1st, 2011 AT 3:35 PM
Tiny
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How is cleaning the exhaust going to make it run less rich?So is your slide needle now in the stock position since you changed its position?Did you do any performance mods like pipe carb jetting etc?
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Monday, August 1st, 2011 AT 6:24 PM
Tiny
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Well if the carbon from running rich built up in the exhaust it could cause a performance issue. Today I put pin back in stock position and it runs but the problem is I believe a blown fuze causing it to get less power making it go 15mph slower. My scooter has a 15 amp fuse so my guess is it only has that fuse and the fuse close to the battery, it does have a circuit board the size of a pack of cigarettes which I believe could be a substitute for the fuses. It is a foreign bike
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Monday, August 1st, 2011 AT 6:49 PM
Tiny
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True carbon build up could cause performane issues but it says you only have 3,000 miles it would have to funning really rich to have clogged up the exhaust. The 2Cycle engines are more prone to clog up the exhaust ports and pipes.I would check out your fuse problem if the ignition system isnt getting the proper voltage it could cause performance issues.
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Monday, August 1st, 2011 AT 6:55 PM
Tiny
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Do you have a owners manual to tell you what that fuse powers?
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Monday, August 1st, 2011 AT 6:56 PM
Tiny
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It is a 4 cycle engine, I checked both the fuses and they werent blown and I could only find 2 fuses on it thats why I thought the little circuit board substituted for the fuses, I have a 15 amp fuse, if I put a 20 amp in there will I have more power? 15 amp is what it came with, I never changed the fuse cause it doesnt look blown I checked if any wires are grounding out somewhere where there not suppost to and everything was fine, I dont understand my main guess would be get a different little circuit board or replace 15 amp fuse with 20 amp? Your the professional, what sounds right>?
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Monday, August 1st, 2011 AT 7:15 PM
Tiny
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The fuse rating is just how many amps the fuse will carry thru it if that number is exceeded from short to ground or any other reason the fuse will blow and create a open circuit. It to protect the circuit wires etc. If you put a larger fuse then the circuit was designed for you could damage the circuit melt wires fire etc. Another words always use the same size fuse that it came with. If the fuse keeps blowing then your going to have to dig deeper as to why the fuse keeps blowing. That circuit board your looking at could be a electronic voltage regulator for your charging system or something else like that.
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Monday, August 1st, 2011 AT 7:26 PM
Tiny
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Well here's the deal, I took the circuit board out and like I said its equivalent to a pack of cards, cigarettes, etc. I took it out a couple of days ago trying to find my fuses because when I would turn my brights on it would run fine at full speed. When I took the circuit board out of the casing I suppose I bent something because I saw smoke. After that the scooter would only do 45mph. And the blue 15 amp fuse doesnt LOOK blown but the only reasoning I see it slowing down like that is because that circuit board smoked a little and might have fried. Still before I messed with the circuit board the moped would be boggy if I had my lights off, than I turn my brights on and it would pick up but I cant find anymore fuses to trace what the problem is. I only found 2 fuses. The clear tube one by the battery and the blue 15 amp one underneath my headlight. It seems like an electrical problem but I cant find out where. Its really irritating. Now when I hit 45 it is boggy and it chuggs so I have to stay at a constant speed of 40mph. I dont think its the engine because it did run better when my brights were on but now that the circuit board is possibly fried it doesnt do above 45. Does that make sense?
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Monday, August 1st, 2011 AT 7:47 PM

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