Weak spark,new stator fitted sachs sx1 50cc minarelli engine By masterburt (Read 1,087 times)

[masterburt]

Hi Guys I have a weak on my 50cc rebuild it seems jumpy,Do you need a earth ? fitted a new stator and seems weak ? anyone know what voltage should be coming from the stator when engine is been cranked ? can i check what current is coming from the sparkplug cap by using a mulitimeter ? 


any info would be so much appreciated thanks guys 

[tvnacman]

Check the ac voltage on the black/red wire while cranking . Check the engine ground coil ground cdi ground .

What type of spark plug are you using ?
John

[Alleyoop]

Here is a great VIDEO for testing:
Alleyoop

scooterdoc.proboards.com/thread/9349/great-spark-video-tests

[Bashan]

No you can't check at the plug boot, I think it's about 25,000 to 30,000v. You can check at the coil input and it's about 30v AC. The R/B powers the CDI and should be 50 to 100v AC. If your spark is irregular, a more likely suspect is the trigger impulse. It should be .05v AC+. There are several articles in the electrical section of the Library on stators.