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Post by veratos on Oct 15, 2011 18:22:32 GMT -5
Hello new here, well i have a zhen schooter 49cc and i cant seem to get it started, when i do get it started it runs fine for the most part but after i let it sit for a while it wont start back up, i have not try agusting the fule/air on it but i have replaced a few parts when i replaced the starter relay it started right up, but after a while it will just die on me and wont start back up, i have no clue on where to start, i have look for it to spark by taken the plug out and puting the lead on it to see if i get spark, i get it some times but not all the time any one have any idea i really need to get it started and running, thanks
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Post by 90GTVert on Oct 16, 2011 10:31:46 GMT -5
:welcome2:
If you have intermittent spark, you need to find out why. My first course of action would be to check all connections in the ignition system (CDI, coil, stator, kill switch, ignition switch) as well as the engine and frame grounds.
The starter relay shouldn't cause it to die out. It's only supposed to be active when you are holding the starter button.
When it is running again, I would suggest adjusting the mixture screw and idle speed. Those 2 things being out of adjustment may not be the cause of the issues you're having, but they certainly won't help the situation.
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Post by speedy1125 on Oct 16, 2011 11:03:17 GMT -5
do a valve adjustment too, tight valves on 4 strokes create starting problems like this.
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Post by veratos on Oct 16, 2011 11:14:03 GMT -5
well looking at my carb yesterday i did not see and adjustment scews, if im looking at it right its fule injected it has a sensor on the side of it with two wires comeing out from it, i have replaces the spark plug and the coil/lead, now the CDI what is that i cant remeber xD, if it will help i will take a few pics for of it, would it have a magneto where the crank sensor is?
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Post by 90GTVert on Oct 16, 2011 11:30:45 GMT -5
Take some pics please. There are fuel injected scoots, but I think you may just be seeing the wires to the automatic enricher on the carburetor. Not sure. Here's a typical two stroke carb.  Speedy, I assume this is a 2T. This msg was posted in another msg in the 2T section, I just moved it here so it would get it's own attention. |
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Post by veratos on Oct 16, 2011 12:44:36 GMT -5
it does not have adjustment screws on it i have taken it apart and and look at it and its really clean it gets fule, it wants to to start every thing engages every thing turns so i think it spark but i dont know what to look at after replace plug lead/coil/ and starter relay Attachments:
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Post by Fox on Oct 16, 2011 12:53:26 GMT -5
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Post by veratos on Oct 16, 2011 14:37:15 GMT -5
ok well i did the valve adjustment it sounds like it got more thump to it i am going to go back in and play with it a lil more the only guage i got well smalles is .o6 it calles for .o5 so i am going to go play with it more , any more ideas? still not starting
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Post by 90GTVert on Oct 16, 2011 15:30:31 GMT -5
Is that .05 and .06 mm or inch? If those are inches, your valves are too loose. Get the right gauge and set them again. If it's mm, the .06 should work, that's 0.00236220472".
Look over that link that Fox posted carefully and you might find the screws you need to adjust on your carb. I can see the idle speed screw in the 1st pic you posted. It's to the right, sticking straight up, with a spring on it. In the second pic, the mixture screw should be kinda below the cap and slightly toward the intake manifold.
None of that stuff will matter if you don't have spark though.
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Post by veratos on Oct 16, 2011 16:13:57 GMT -5
its mm not inchs and i did i know where the idle it and i did fine the mix screw but yes i still have no spark what elce is there besieds the coil n plug?
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Post by speedy1125 on Oct 16, 2011 16:15:27 GMT -5
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Post by veratos on Oct 16, 2011 19:32:01 GMT -5
ok well i will buy the part and then get back to yall, i really appreciate the help yall
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Post by 90GTVert on Oct 16, 2011 20:36:35 GMT -5
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Post by veratos on Oct 19, 2011 20:00:48 GMT -5
ok i got the part and it works just fine starts up first try, only thing is now i have no power, i barly gets up to speed, it like after i get up to half on the throtol like going any further makes no diffrence, any idas? fuel air mixer?
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Post by speedy1125 on Oct 19, 2011 20:04:48 GMT -5
what does your maximum speed say on the speedometer? install a new plug the run it wide open... take it out what does it look like? black? or real clean? or tan?
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