Yamaha Moto 4 Weak Spark How To Troubleshoot No Or On Big Bear With Full
I would rule everything elso out first. As for 90 p.s.i., the valves might need adjusting. Although when i have the spark plug on the outside.
Spark issues on Yamaha Moto 4 350 1987 ATV
When fuel injectors are clogged, the engine may not receive the proper fuel mixture, causing difficulties in. The cdi is fine too unless the 12v. Sometimes i get a very weak, intermittent glow on my spark tester, but not enough to fire the plug.
The coils do go bad occasionally, you could test it or replace it.
I've checked continuity on just about all wires in the harness. And the ignition coil is fine. Visually check all wires and couldnt find anything bad. If you have a good spark when you pull start it then the stator, pulse, and wires connecting them all are all fine.
Reconnect any disconnected terminals or. Not too sure where to go about. Thanks to another member i got the service manual and went threw the tests this past weekend and i still cannot find anything. Sometimes i get a very weak, intermittent glow on my spark tester, but not enough to fire the plug.
Yamaha Stator diagnosis/weak spark remove and replace YouTube
I charged the battery it started after i changed wire and.
I replaced the coil and plug and plug wire. Going through some of the wiring checking for bad grounds on the 200yfm yamaha moto 4 mid 80's model. I recently picked up an old 86 moto 4 80cc that i would like to get running and fix up for my grandson. Check all of the electrical connections between the battery terminals, the ignition switch, kill switch, cdi unit, ignition coil and spark plug.
I have no experience on a. Check your spark plug and check your stator. Last part you haven't replaced is the plug. Start with checking all your wire terminals including the ground and fuse.
Spark issues on Yamaha Moto 4 350 1987 ATV
The problem is there is no spark whatsoever.
Look at the kill switch (run/stop) to make sure it isn't bad or broken. Common culprits include a clogged fuel injector system or a malfunctioning spark plug. I just bought a yamaha moto 4, i have sprayed 'start ya barstard' into the carb and on the spark plug and it doesnt even fire! No power going from the battery connectors to the lights, kill starter switch or anything on the handle bars.
It may be very minor considering it was running fine then just went out. 1987 moto 4 no spark. I've checked continuity on just about all wires in the harness. Then check wiring for bare spots that may be grounding out.
No spark on 1987 moto 4 225 ATV Enthusiast Community
I was told it had no spark which i verified by hooking up a battery and.
Starting problems in yamaha moto 4 can stem from various issues such as a weak battery, faulty spark plug, or clogged fuel system. Try the straw through the spark plug hole trick to determine if the piston is at t.d.c. Old gasoline left sitting in the tank can cause. As well as there is no spark.
