Zong not starting again

[Pabesco]

I rechecked the spark again today and yes it is still very weak. I tried starting it by rolling sown a hill and poping it into second but no luck. I tried it a few times. I will check for continuity the way weldandgrind suggested and post the results. But yes the spark is still very weak. Unless its dark you can Hadley see the spark. I placed the plug close to the engine head after scraping a bit of the paint away to expose the bare metal, and in order to get the spark to jump to the engine I had to hold the plug very close to the engine, like less than a quarter inch away. Any further and the spark would not jump.

[Pabesco]

Is there a test for the source and ignition coil while cranking the bike? Also for the firing coil without the spark plug? Will I be able to put my multimeter across certain leads and crank the bike to see if the right amount of power is being sent to wherever it needs to go?
Thanks guys

[Wild_Alaskan]

That seem like a pretty strong spark to me. usually they are tested by touching the plug to the engine block and then watching the spark jump the gap between the electrode and metal on the spark plug. if you are getting spark that will jump the gap on the plug and then jump another 1/4 inch to the block that should be plenty good.

[Wild_Alaskan]

Sorry if I just missed these posts but did you do a compression test?

Have you investigated the flywheel for tightness/sheared woodruff key?

Did spraying starting fluid directly in to the carb result in no little pops whatsoever?

[SpudRider]

Originally Posted by Wild_Alaskan

That seem like a pretty strong spark to me. usually they are tested by touching the plug to the engine block and then watching the spark jump the gap between the electrode and metal on the spark plug. if you are getting spark that will jump the gap on the plug and then jump another 1/4 inch to the block that should be plenty good.

Indeed! 8O I don't think you are having any electrical problems.

Spud

[SpudRider]

Originally Posted by Wild_Alaskan

Sorry if I just missed these posts but did you do a compression test?

Have you investigated the flywheel for tightness/sheared woodruff key?

Did spraying starting fluid directly in to the carb result in no little pops whatsoever?

X2.

I strongly doubt the flywheel is loose. However, it won't hurt to check the flywheel after you have done a compression test, and experimented with spraying starting fluid into the carburetor while cranking the engine.

Spud

[Pabesco]

How would I spray starter fluid Into the carb. I tried starter fluid directly into the intake with the carb removed and it didn't seem any different. Is it possible to spray fluid into the carb? When the carb is connected I know the float bowl fills up because I can drain it also if I Remove the plug right after trying to start it I can smell gas on the plug. I'm still waiting on a 10mm adapter for my compression tester so I can get an exact reading but if I cover the plug hole with my finger no matter how hard I press I cannot keep it there while cranking the bike. I will do a video tomorrow to try to show the plug spark and hopefully the engine sound will be completely audible.
If I have to check the flywheel what exactly am I supposed to be looking for besides tightness or only this and what should I be looking for on the woodruff? If it is still where it is supposed to be do I remove it and check for ware or damage?
I will do more reading o. Compression but what range should I be looking for when I am able to test it on Tuesday after collecting the adapter?
I did a complete check of the wiring system today and after reviewing g your comments don't think there is a problem with any point in the wiring.
I purchased a new carb and installed it as advised also and checked the mixture setting and it seems to be in the range desired. Is there any other preps needed for a new carb before installing? I also didn't change the main jet as yet I wanted to get it running first.
Thanks to everyone for all of the great suggestions. Great learning experience. Thanks again

[SpudRider]

If you got a brand new carburetor, I'm confident it is in good condition. Therefore, I think you should concentrate on one task at a time, and check the compression before you do anything else.

When checking the compression, use the technique in the following thread.

http://chinariders.net/modules.php?n...ewtopic&t=7807

Leave the kill switch in the "off" position, and make sure you ground the outside electrode of the spark plug. Otherwise, you might damage your new, CDI unit! 8O

Crank the engine with the throttle wide open, otherwise you will not get the proper compression reading. Check the ambient air temperature, and let us kow how warm the day was when you conducted the compression test. Also, post a photograph of your compression tester, so we know what type it is.

Finally, conduct the compression test at least three times. Record the results, and report to us the readings. I'm not going to tell you what reading you should get. I want you to tell us each of the three compression readings you obtain.

Spud

[Pabesco]

[Pabesco]

I will follow your directions and thank you for the info. I had no idea I could damage the Cdi if the plug is not grounded. Here are the pics of the compression tester and a few videos of the spark from the plug. Some in the dark and some with light.




http://i1271.photobucket.com/albums/...ps770eb57f.mp4

http://i1271.photobucket.com/albums/...psfea3d3fc.mp4

http://i1271.photobucket.com/albums/...psd9a60760.mp4

http://i1271.photobucket.com/albums/...ps7b3b00be.mp4

Hope they are clear enough

[Pabesco]

[Pabesco]

Sorry I'm trying to post the videos from my iPhone but with no success. I wl use a laptop to send.

[Pabesco]

someone please remind me how to post video using photobucket,

[Weldangrind]

Originally Posted by Pabesco

someone please remind me how to post video using photobucket,

http://www.chinariders.net/modules.p...wtopic&t=11188

[Weldangrind]

I fixed your video links for you. The third video is the only one that is easy to see, and you have a strong spark. As Spud says, hold the spark plug firmly against the head (or some other metal surface), so as to not damage the CDI.