KymcoForum.com

Scooters - 50cc => zx50 => Topic started by: kymcopolska on September 14, 2011, 11:28:32 PM

Title: overheat with spark plug?
Post by: kymcopolska on September 14, 2011, 11:28:32 PM

hello, i got the original spark plug the NGK BR8HSA. and when its cold out (like morning) it starts and rides fine but it isnt until the atfernoon when it gets warm outside.  almost everytime i ride in the afternoon, it starts to sputter and lose power and eventually die. ill wait  like 15 mins and it would start up and ride again but would do the same thing again soon after. also, everytime i try to electic start or kick start, it back fires and sounds like its the sparkplug.....help me please?     ps i cleaned out the carb, changed the sparkplug twice and still the same results

Title: Re: overheat with spark plug?
Post by: sidthesloth on September 15, 2011, 07:06:19 AM

Next time it dies, check to see if there is spark at the plug. with it dying when warm sounds like it could be the cdi is playing up, I think that is the weakest link on these scoots. Other alternative is to wash the air filter, no need to wait for that one, blocked air filter= rich mixture= spluttering/flooding.

Title: Re: overheat with spark plug?
Post by: kymcopolska on September 15, 2011, 10:35:48 PM

yeah, i try that. i cleaned the air filter yesterday but it was pretty cool here yesterday so it didnt ealy have much affect.

Title: Re: overheat with spark plug?
Post by: zombie on September 25, 2011, 09:47:52 AM

Replace the stator. and the cdi. You can get them both for about $100.00. They both can act as you describe.

Title: Re: overheat with spark plug?
Post by: kymcopolska on September 25, 2011, 11:40:20 AM

is there a way to check  the stator and cdi to see if its good or bad?

Title: Re: overheat with spark plug?
Post by: zombie on September 26, 2011, 01:54:32 AM

Yes, and no. You can ohm them out to see the specs. but they will be fine as your trouble comes in when the scoot is warm. You can remove the parts, put them on a piece of plywood in the oven set at 175 degrees for 20 minutes, and re-test. You should see a failure then. Or ride w/ a multimeter, and test on the side of the road. The oven is easier as you will have to have the parts off to replace anyway. Use a thermometer tho you want to be sure your oven temp. is right. There are posts w/ the manuals on this site that have all the specs. I just forget where they are.

Title: Re: overheat with spark plug?
Post by: kymcopolska on September 26, 2011, 01:57:14 AM

ill try that.  but its probably the cdi and stator becuz i cleaned my carb twice. changed the fuel filter and cleaned out all the tubes with gas and checked for air leaks

Title: Re: overheat with spark plug?
Post by: sidthesloth on September 26, 2011, 02:03:26 AM

http://www.kymcoforum.com/index.php?topic=1689.0 (http://www.kymcoforum.com/index.php?topic=1689.0)

Title: Re: overheat with spark plug?
Post by: zombie on September 26, 2011, 02:44:13 AM

You Da Man Sid!

Title: Re: overheat with spark plug?
Post by: sidthesloth on September 26, 2011, 03:48:55 AM

Your thread mate, just spreading it around a little.