My Yamaha enticer 125cc motorcycle has the problem to the charging coil. When I up the accelerator the headlight down. The coil was damage and I re-coiling it. What should I do?

SOURCE: 85 yamaha virago xv1000 are the coils & cdi igntor box interchang

YES

SOURCE: Testing ignition coil

it sure sounds like the coil, you already did the test.

SOURCE: Have no spark. Changed coil & CDI box so far.

Hi and welcome to FixYa,
Initially, suggested checks on the wires:

• black of igniter unit tied to ground;
• orange wire from igniter to ignition coil with pulsating voltage when starting;
• gray wire from igniter to ignition coil with pulsating voltage when starting;
• IGN + 12 on red/white wire to igniter and ignition coils from engine stop switch;
• IGN + 12 on red/white wire to engine stop switch coming from 10Amp ignition fuse;
• pulsating low voltage from pickup coil between the wires black/white, white/green & yellow/red.

SOURCE: Engine Monotonous sound from new yamaha gladiator ss 125cc

The sound is being caused by something mechanical. It is not likely to go away by it's self. It will probably get worse. Don't wait for the next service. Take it in now before any more potential damage can be done. Check the oil level in the gearbox. It could be low.

Testimonial: "Thanks for your concerned reply"

SOURCE: 1971 yamaha 175 motorcycle electrical problem

ill do a list of things that can help or be the problem.

1) Pull the coil off and wire brush down all the bare metal. then do the same to the frame where it bolted on. Make sure there is a grounded wire that bolts back onto the coil if there was one, Replace the wire end for the ground peice.

2) Pull off the spark end cap and cut the wire down a few mm until you see new wire then screw it back on. (if its NGK)

3) follow the wire from the kill switch and make sure it isnt grounding out.

4) Hotwire - find the kill switch and unplug it. if this doesnt help unplug the ignition key wiring. on older bikes it will work for ignition but not lights for the key part. if this helps you need a new Ignition barrel / Kill switch.

5) check your wiring harness make sure it isnt grounding anywhere exept where its ment to.

6) make your your engine to CDI is plugged in and has no oxide in it

7) try and find somone with a running bike the same as yours and borrow there CDI, if this helps you need to buy a new CDI or check yours for wiring shorts.

hope this helps if not buzz me ([email protected])