starts then dies

[Malanca]

Hey everyone, I'm new to riding motor bikes and with repairing.
as of yesterday I would start pedaling and my engine would turn on for a few seconds then it would die out. It would not rev when I move the throttle. a few days ago i had a minor gas leak where the carb meets the engine. (it was too spaced out i suppose, so i re-adjusted it.)
I looked on some threads here on the site. I took apart my carb and found that it was flooded with gas.
as of now i have a good amount of gas in my tank my carb isnt flooded or leaking.
any idea or advice?
thanks.
-M

 

[GearNut]

Searching this site can come up wit all kinds of jewels!
Here's a jem I found for you:
http://www.motoredbikes.com/showthread.php?t=9619

You might want to read this one as well, It has an incredible amount of awesome information!:
http://motoredbikes.com/showthread.php?t=10392

 

[Unorthodox]

Hey everyone, I'm new to riding motor bikes and with repairing.
as of yesterday I would start pedaling and my engine would turn on for a few seconds then it would die out. It would not rev when I move the throttle. a few days ago i had a minor gas leak where the carb meets the engine. (it was too spaced out i suppose, so i re-adjusted it.)
I looked on some threads here on the site. I took apart my carb and found that it was flooded with gas.
as of now i have a good amount of gas in my tank my carb isnt flooded or leaking.
any idea or advice?
thanks.
-M

I had the same problem. It turned out to be the coil/magneto. It was fried due to getting wet while riding in the rain. I learned that you have to seal the coil compartment with silicone. To test the coil use a volt meter set at 200k on the ohms setting. Touch the meter leads to the two solder points where the wires are connected to the coil. It should read somewhere between 400-700. If it stays at .1 then the coil is bad. I also went ahead and replaced the CDI as well to give it an entire new electrical system. You can get a good deal on the two parts on eBay. The coil and CDI are the same system used on regular motorcycles. I found a lot of good videos on the subject on YouTube. Remember that just because the plug fires a little bit does not mean the coil is good. Hope this info will help on this subject.

 

[A4r2t0]

I had the same problem. It turned out to be the coil/magneto. It was fried due to getting wet while riding in the rain. I learned that you have to seal the coil compartment with silicone. To test the coil use a volt meter set at 200k on the ohms setting. Touch the meter leads to the two solder points where the wires are connected to the coil. It should read somewhere between 400-700. If it stays at .1 then the coil is bad. I also went ahead and replaced the CDI as well to give it an entire new electrical system. You can get a good deal on the two parts on eBay. The coil and CDI are the same system used on regular motorcycles. I found a lot of good videos on the subject on YouTube. Remember that just because the plug fires a little bit does not mean the coil is good. Hope this info will help on this subject.

S.o.s.! I got an s d stinger 80, put a new carb, short offset manifold, boost bottle and a viper flex muffler. Went belt drive as well. Fired up blew out the cobwebs and dialed it in. Ran like a raped ape. 6 or8 miles later it takes a s**t, fire back up and same crap. Acting fuel starved put new plug in gapped @ 31'. ( s d says gap at 28' to34). Have spark and pulled new carb took apart no evidence of any crap sucked into it.Voodoo cursed! Although it fires, the stock p.o.s. coil is most likely going south. My guess. Am upgrading to an 80/100 kit with a dual plug head and a new coil. Nitrous too. If anybody could maybe contact me, hopefully I can put a hex on the curse, I would be very greatful. Thank y'all and ride safe! A4r2t0 art.yesaitis@gmail.com

 

[A4r2t0]

S.o.s.! I got an s d stinger 80, put a new carb, short offset manifold, boost bottle and a viper flex muffler. Went belt drive as well. Fired up blew out the cobwebs and dialed it in. Ran like a raped ape. 6 or8 miles later it takes a sh*t, fire back up and same crap. Acting fuel starved put new plug in gapped @ 31'. ( s d says gap at 28' to34). Have spark and pulled new carb took apart no evidence of any crap sucked into it.Voodoo cursed! Although it fires, the stock p.o.s. coil is most likely going south. My guess. Am upgrading to an 80/100 kit with a dual plug head and a new coil. Nitrous too. If anybody could maybe contact me, hopefully I can put a hex on the curse, I would be very greatful. Thank y'all and ride safe! A4r2t0 art.yesaitis@gmail.com

 

[Wrench]

waist of money and parts to buy a duel plug head

 

[A4r2t0]

waist of money and parts to buy a duel plug head

Well, at least the damn thing looks cool.....(pricey) any ideas? Would like input, thanks. P s also restoring '75 h d xlh . peace.

 

[Johndizzle]

I have a 100 CC sange motor The bike has been running fine for like a week running great actually and then all of a sudden yesterday I road across town and on my way back I could not get it to fire it would fire for like a few seconds and then it would die out and then it wouldn't start again so I changed the spark plug and doesn't seem to have any effect any effect I put a new CDI Box on it and that still doesn't seem to have any effect.

Any suggestions???

 

[Johndizzle]

I'm really hoping it's not the Magneto coil

 

[Chainlube]

I have a 100 CC sange motor The bike has been running fine for like a week running great actually and then all of a sudden yesterday I roded across town and on my way back I could not get it to fire it would fire for like a few seconds and then it would die out and then it wouldn't start again so I changed the spark plug and doesn't seem to have any effect any effect I put a new CDI Box on it and that still doesn't seem to have any effect any suggestions

Check that the head bolts are tight.