spark but no start

dwint51 · 11-09-2013, 03:51 PM

I had my engine running a few weeks ago and it ran fine but now it wont start.i have spark and its getting gas out of the fuel filter.the plug is soaked also.can I have a bad plug even though I have spark

Lefty · 11-09-2013, 04:11 PM

I would question that you do have spark if the plug is soaked. Take the plug out or if you have a spare take the boot cap off and stick the plug in and HOLD IT on the Valve cover or MOTOR and crank it. If no spark then hold it on the frame and see if it sparks there. If it sparks on the frame but not on the motor Check the Ground wire from the frame to the motor.
Also some forget to put the KILLSWITCH on the run position they do get hit by accident and not spark. Also some have a killswitch on the side stand make sure it is UP.
Lefty

dwint51 · 11-09-2013, 07:17 PM

where would the ground wire come from?should i trace it from the negative on the battery

Lefty · 11-09-2013, 07:35 PM

No not from the battery. The Ground wire is Attached to one of the bolts on the VALVE Cover if it's a 4 Stroke or a bolt on the motor and ITS ATTACHED TO THE FRAME. There should also be a Ground Wire from the NEGATIVE post of the Battery to the FRAME.
Lefty

dwint51 · 11-09-2013, 07:40 PM

Quote:

Originally Posted by dwint51

where would the ground wire come from?should i trace it from the negative on the battery

it definetly has good spark but im not sure if im understanding you.i have a spare plug,are you saying leave one plug in the head then take another plug and put it in the boot?this scooter was in a accident and when i goot it back it fired right up.i took off the front end end today but it has great spark so would i have a ground problem?

Lefty · 11-09-2013, 07:43 PM

How do you know you have a great spark?
Lefty

dwint51 · 11-09-2013, 07:43 PM

Quote:

Originally Posted by dwint51

it definetly has good spark but im not sure if im understanding you.i have a spare plug,are you saying leave one plug in the head then take another plug and put it in the boot?this scooter was in a accident and when i goot it back it fired right up.i took off the front end end today but it has great spark so would i have a ground problem?

its a two stroke

Lefty · 11-09-2013, 07:44 PM

So what does that have to do with having a good sprak?
Lefty

dwint51 · 11-09-2013, 07:51 PM

i took out the plug and put it in the boot and i rested it on the head and its sparking good

Lefty · 11-09-2013, 07:56 PM

Great! why didn't you say that, ok so if the spark plug is wet then it is being flooded with to much fuel. Was the bike dropped or something is the Muffler on it and the pipe?
Try this disconnect the Air Box tube from the carb and see it then wants to fire.
Lefty

dwint51 · 11-09-2013, 08:29 PM

the pipe is on it and it has been moved around a bit while taking off the front end off.my neighbor wrecked it last month and the gas is over a month old.i did take the air cover box off and filter but it still didn't try to start

dwint51 · 11-09-2013, 08:48 PM

Quote:

Originally Posted by dwint51

the pipe is on it and it has been moved around a bit while taking off the front end off.my neighbor wrecked it last month and the gas is over a month old.i did take the air cover box off and filter but it still didn't try to start

im thinking a bad plug.can you have a plug that sparks but doesn't start.isnt that a fouled plug?

Lefty · 11-09-2013, 08:54 PM

Yes, but only if the spark is yellowish if the spark is BLUEISH then it is fine. But you can always try a new plug won't hurt and it might help.

Check the Slider in the carb take the air tube off an see if you can see the Slide down. Maybe when the accident happened it jammed the Slider in the open position and that would let a lot of fuel in.
Lefty

dwint51 · 11-09-2013, 08:57 PM

ok thanks,i will check all of that tomorrow.i will get a plug also

11-09-2013, 04:11 PM	#2
Lefty Join Date: Jan 2013 Location: midwest Posts: 93	I would question that you do have spark if the plug is soaked. Take the plug out or if you have a spare take the boot cap off and stick the plug in and HOLD IT on the Valve cover or MOTOR and crank it. If no spark then hold it on the frame and see if it sparks there. If it sparks on the frame but not on the motor Check the Ground wire from the frame to the motor. Also some forget to put the KILLSWITCH on the run position they do get hit by accident and not spark. Also some have a killswitch on the side stand make sure it is UP. Lefty __________________ Three Wheels keep me up You’ll never be old and wise if you weren’t young and crazy
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11-09-2013, 07:35 PM	#4
Lefty Join Date: Jan 2013 Location: midwest Posts: 93	No not from the battery. The Ground wire is Attached to one of the bolts on the VALVE Cover if it's a 4 Stroke or a bolt on the motor and ITS ATTACHED TO THE FRAME. There should also be a Ground Wire from the NEGATIVE post of the Battery to the FRAME. Lefty __________________ Three Wheels keep me up You’ll never be old and wise if you weren’t young and crazy
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11-09-2013, 07:43 PM	#6
Lefty Join Date: Jan 2013 Location: midwest Posts: 93	How do you know you have a great spark? Lefty __________________ Three Wheels keep me up You’ll never be old and wise if you weren’t young and crazy
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11-09-2013, 07:44 PM	#8
Lefty Join Date: Jan 2013 Location: midwest Posts: 93	So what does that have to do with having a good sprak? Lefty __________________ Three Wheels keep me up You’ll never be old and wise if you weren’t young and crazy
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11-09-2013, 07:56 PM	#10
Lefty Join Date: Jan 2013 Location: midwest Posts: 93	Great! why didn't you say that, ok so if the spark plug is wet then it is being flooded with to much fuel. Was the bike dropped or something is the Muffler on it and the pipe? Try this disconnect the Air Box tube from the carb and see it then wants to fire. Lefty __________________ Three Wheels keep me up You’ll never be old and wise if you weren’t young and crazy
	0

11-09-2013, 07:51 PM	#9
dwint51 Join Date: Mar 2013 Location: murphy n.c Posts: 467	i took out the plug and put it in the boot and i rested it on the head and its sparking good
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11-09-2013, 08:29 PM	#11
dwint51 Join Date: Mar 2013 Location: murphy n.c Posts: 467	the pipe is on it and it has been moved around a bit while taking off the front end off.my neighbor wrecked it last month and the gas is over a month old.i did take the air cover box off and filter but it still didn't try to start
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11-09-2013, 08:54 PM	#13
Lefty Join Date: Jan 2013 Location: midwest Posts: 93	Yes, but only if the spark is yellowish if the spark is BLUEISH then it is fine. But you can always try a new plug won't hurt and it might help. Check the Slider in the carb take the air tube off an see if you can see the Slide down. Maybe when the accident happened it jammed the Slider in the open position and that would let a lot of fuel in. Lefty __________________ Three Wheels keep me up You’ll never be old and wise if you weren’t young and crazy
	0

11-09-2013, 08:57 PM	#14
dwint51 Join Date: Mar 2013 Location: murphy n.c Posts: 467	ok thanks,i will check all of that tomorrow.i will get a plug also
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