no start after it died

merinious · #1 01-28-2009, 05:05 PM

have had my engine for about a month and i have had no problems but yesterday i had left my house with on the bike and it started raining. at the stoplight i pulled in the clutch and it died now it wont start iv tried repetitively but no luck what should i do it is a 50cc enginkit

when i took the spark plug out and put to the fins to the motor their was no spark

jasonh · #2 01-28-2009, 05:08 PM

pull out the spark plug and plug it back into the wire. Rest the threads of the plug on the motor, and spin the back wheel. You should see a spark.

If you don't, then it could be your magneto or CDI. There is a thread with values you can test them for with a multimeter.

http://motorbicycling.com/f34/no-spa...kill-2102.html

NunyaBidness · #3 01-28-2009, 05:13 PM

It could be as simple as a shorted kill switch, if you have the kill switch hooked up disconnect it. Then try what jasonh said.

**2door** · #4 01-28-2009, 05:19 PM

Quote:

Originally Posted by merinious

have had my engine for about a month and i have had no problems but yesterday i had left my house with on the bike and it started raining. at the stoplight i pulled in the clutch and it died now it wont start iv tried repetitively but no luck what should i do it is a 50cc enginkit

We're assuming the problem started when the engine got wet so let's go there. Have you checked to see if you're getting spark? Remove the spark plug, lay it against the fins of the cylinder head and rotate the engine quickly by either pedaling with the rear wheel off the ground or spinning the rear wheel by hand. You should see a spark jump between the electrodes. If no spark here's what to try.
First place to check for moisture, which is most likely your problem, is the high voltage lead, (spark plug wire) at the CDI. If all looks dry there it could be water in your kill switch(button) on in the wiring connections from the engine to the CDI and kill switch. The last place to look for ignition related problems is the magneto, (left side engine cover) Take the cover off, spray with a small squirt of WD-40 and blow dry with compressed air if you have it. If your problem is fuel related check the carburator air cleaner element for signs of water. Dry everything with air or a blowdryer. Try these and report back to us. There are other things we can look for but let's try the obvious things first. We're all here to help.
Tom

merinious · #5 01-28-2009, 05:51 PM

Quote:

Originally Posted by merinious

have had my engine for about a month and i have had no problems but yesterday i had left my house with on the bike and it started raining. at the stoplight i pulled in the clutch and it died now it wont start iv tried repetitively but no luck what should i do it is a 50cc enginkit

when i took the spark plug out and put to the fins to the motor their was no spark

ok iv took the cdi completely off and no moisture then reattached it and tryied still no spark then i checke4d the kill switch and agen no moisture and no spark how do i check the magneto?? and iv already checked the corroborator........

Bikeguy Joe · #6 01-28-2009, 06:12 PM

The problem may not be apperent...disconnect the kill switch completely and try it again.

Bikeguy Joe · #7 01-28-2009, 06:14 PM

Make sure ALL connections (other than the kill switch) are connected, including screwing the plug wire into the CDI and the cap onto the wire.

merinious · #8 01-28-2009, 10:01 PM

Quote:

Originally Posted by merinious

ok iv took the cdi completely off and no moisture then reattached it and tryied still no spark then i checke4d the kill switch and agen no moisture and no spark how do i check the magneto?? and iv already checked the corroborator........

ok so i forgot to add earlier that it spuddered a couple times and sounded if it would start and also poped idk if this helps find out the problem

biken stins · #9 01-29-2009, 12:12 AM

Put in a different spark plug

jasonh · #10 01-29-2009, 11:31 AM

Quote:

Originally Posted by merinious

ok iv took the cdi completely off and no moisture then reattached it and tryied still no spark then i checke4d the kill switch and agen no moisture and no spark how do i check the magneto?? and iv already checked the corroborator........

cor·rob·o·rate (kə-rŏb'ə-rāt') Pronunciation Key
tr.v. cor·rob·o·rat·ed, cor·rob·o·rat·ing, cor·rob·o·rates
To strengthen or support with other evidence; make more certain.

I think you mean carburetor

I posted a link to a thread earlier that gives instructions on how to check the CDI and magneto with a multimeter.