We bought 110 for my son for Christmas. He rode it about 20 min., it stalled 4 times, now won't start. It turns over, but won't start. We changed spark plug, it has spark. Took off carb sprayed starter fluid in engine still won't start. Any other ideas would be greatly appreciated. What is compression suppose to be?

 

i bought two 250cc Christmas, i make sure the batteries are fully charged to start, if batteries have been prepared right (acid poured in batteries)...change spark plug, fresh gas,....hope this helps

 

Tried all that. Unfortunately that hasn't worked. We have enough charge, but keep running it down by trying to start it.

 

When you sprayed starting fluid into the cylinder, did it hit at all when you tried to start it? Did you check to see if the plug was wet after trying to crank it?

 

No, did not hit at all. Yes spark plug was wet.

 

Welcome to the forum runningfoxfarm! [img]i/expressions/face-icon-small-smile.gif[/img]

Is the spark yellow or blue? Blue is the better color when it comes to spark. The only other reason I can think of it not firing is it has some how lost timing or a stuck(or way too tight) valve.

 

Spark is blue. It is very frustrating. My son is riding with his father on his scrambler while we try to figure this out.

 

Well you need 3 things fuel spark and compression. Have you checked the compression by chance? Like mentioned above possibly a tight valve staying open a bit.

 

<div class="FTQUOTE"><begin quote>Originally posted by: runningfoxfarm

Spark is blue. It is very frustrating. My son is riding with his father on his scrambler while we try to figure this out.</end quote></div>

That is annoying.... Have you tried turning the engine over with your finger in the plug hole. not exactly precise but youll see if there is any compression at all.

 

<div class="FTQUOTE"><begin quote>Originally posted by: Sawyer

Well you need 3 things fuel spark and compression. Have you checked the compression by chance? Like mentioned above possibly a tight valve staying open a bit.</end quote></div>


This may sound dumb,but here goes.You forgot air,= 4.

What about the filter,passage ways.Unlikely it could be that with only 20 minutes ride time,but I certainly would not rule that out without checkin it.

Could it be get too much fuel,mywifesquad?
What about the kill switch?Maybe its on or faulty.