Weird spark issue.

Sti1472 · 09-14-2016, 03:49 PM

I purchased a used off road go kart the other day. The engine is a 150cc GY6. I recently purchased a new rectifier, cdi, and electric choke for it. I installed those items and all is good. I started the engine this morning and noticed something weird. The engine starts and runs, how ever i noticed that while it is running, the rear chain has sparks jumping between the links. Only place i notice sparks. I checked ask the connections i could find and they all look fine. Made site the spark plug boot was on tight. I am kind of stumped. Any ideas would be great

blueboy5000 · 09-16-2016, 06:59 AM

Check all the grounds ( green wires and black wires)

ScootinAlong · 09-16-2016, 08:16 AM

Yeah something is grounding out. You have a wiring rubbing somewhere.

stitch_man87 · 09-16-2016, 01:50 PM

wouldn't it be a power wire touching somewhere and not a ground?

ScootinAlong · 09-16-2016, 02:26 PM

yeah, a hot wire hitting metal which is grounding the connection out..and with the chain contacting when rotating is causing the spark to form from the metal on metal contact

stitch_man87 · 09-16-2016, 02:36 PM

and now i know, which is apparently half the battle lol

blueboy5000 · 09-23-2016, 04:15 PM

No. If a ground is detached, it would cause that circuit to find a path for ground, which could cause that hot on the circuit to find a ground if it touched any grounded metal.

Case and point, if a neg (cold) wire is too corroded on a car, the pos (hot)side can and will cause all kinds of melting. This is the #1 way fuse blocks and severe electrical fires happen in cars.

09-16-2016, 06:59 AM	#2
blueboy5000 Join Date: Jul 2011 Location: Connecticut Posts: 493	Check all the grounds ( green wires and black wires) __________________ 2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats.
	0

09-16-2016, 01:50 PM	#4
stitch_man87 Join Date: Jul 2016 Location: Lexington KY Posts: 52	wouldn't it be a power wire touching somewhere and not a ground? __________________ All about that lowered life #fear_of_heights
	0

09-16-2016, 02:36 PM	#6
stitch_man87 Join Date: Jul 2016 Location: Lexington KY Posts: 52	and now i know, which is apparently half the battle lol __________________ All about that lowered life #fear_of_heights
	0

09-23-2016, 04:15 PM	#7
blueboy5000 Join Date: Jul 2011 Location: Connecticut Posts: 493	No. If a ground is detached, it would cause that circuit to find a path for ground, which could cause that hot on the circuit to find a ground if it touched any grounded metal. Case and point, if a neg (cold) wire is too corroded on a car, the pos (hot)side can and will cause all kinds of melting. This is the #1 way fuse blocks and severe electrical fires happen in cars. __________________ 2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats.
	0