No spark

steadyroller · 05-29-2014, 08:56 PM

My son was coming home from work today and got about ,5 miles from the house and his bike died, and would not start back. After checking that there was gas going into the carb, we removed the plug and checked it with my lawn mower and it fired good. We put everything back together and it still wouldn't start. I then suggest we do what I should have done earlier; remove the plug and check to see if it is getting fire. Bingo. The plug isn't firing. Any suggestions? I'm not much on a 2-cycle engine, esp a motorcycle. Thanks

Cathy · 05-29-2014, 11:06 PM

Would be as easy as a bad spark plug wire.

Water Warrior 2 · 05-29-2014, 11:50 PM

oops, had a senior moment.

tnastvogel · 05-30-2014, 02:17 AM

So I assume the starter is cranking the engine which means you have power. I'd throw a new plug in there first even though it tested good on your lawnmower just to be on the safe side. You could try seeing if the plug wire came loose from the boot. Hold the boot and pull lightly on the wire to see if there's any movement. If there is, tighten it up.

Also check for any loose electrical connections, especially the ones going to the ignition coil.

**jonathan180iq** · 05-30-2014, 08:21 AM

Coil or fuses should be checked.
Obvious ditto on the plug.
Wrap around spark light tester would tell you if the wire is good or not.

alantf · 05-31-2014, 04:11 AM

Quote:

Originally Posted by steadyroller

I'm not much on a 2-cycle engine, esp a motorcycle.

Errrrrr.....The GZ isn't a two stroke engine. It's a four stroke, just like your car.

gz4me + · 06-01-2014, 01:41 AM

Check ignition system connecters for loose or dirty connections. Check coil and pick-up coil.

gz4me + · 06-01-2014, 02:19 AM

I forgot to mention the standard checks. Spray contact cleaner inside the switches. (stop, ignition,clutch,etc.) Easy to do and good general mantenance.

gz4me + · 06-01-2014, 02:26 AM

Sorry Mainlinecoffee. I jumped back on and did not read your post prior to submitting mine. Did not mean to repeat your thoughts.

mainlinecoffee · 06-01-2014, 02:13 AM

If it cranks over by pressing the button and by jumping the solonoid than I would look to a fuse or one of the dozen dumb safety/security switches. I was grounded for days due to a bad connection,I doubt a plug wire would be so drastic to go from vroom vroom to ded. I would think the plug wire would go more like vroom vroom pudda spudda ded.

05-29-2014, 08:56 PM	#1
steadyroller Junior Member Join Date: May 2014 Posts: 3	No spark My son was coming home from work today and got about ,5 miles from the house and his bike died, and would not start back. After checking that there was gas going into the carb, we removed the plug and checked it with my lawn mower and it fired good. We put everything back together and it still wouldn't start. I then suggest we do what I should have done earlier; remove the plug and check to see if it is getting fire. Bingo. The plug isn't firing. Any suggestions? I'm not much on a 2-cycle engine, esp a motorcycle. Thanks Login or Register to Remove Ads
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05-29-2014, 11:50 PM	#3
Water Warrior 2 Senior Member Join Date: Dec 2006 Location: Squamish B.C Canada Posts: 11,409	oops, had a senior moment. Login or Register to Remove Ads
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05-30-2014, 08:21 AM	#5
jonathan180iq Super Moderator Join Date: Jan 2007 Location: Dalton, GA Posts: 3,996	Coil or fuses should be checked. Obvious ditto on the plug. Wrap around spark light tester would tell you if the wire is good or not. Login or Register to Remove Ads
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06-01-2014, 01:41 AM	#7
gz4me + Senior Member Join Date: Sep 2013 Location: Santa Maria, California Posts: 234	No spark Check ignition system connecters for loose or dirty connections. Check coil and pick-up coil.
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06-01-2014, 02:19 AM	#8
gz4me + Senior Member Join Date: Sep 2013 Location: Santa Maria, California Posts: 234	No spark I forgot to mention the standard checks. Spray contact cleaner inside the switches. (stop, ignition,clutch,etc.) Easy to do and good general mantenance.
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05-29-2014, 11:06 PM	#2
Cathy Senior Member Join Date: Nov 2013 Location: Vancouver BC Posts: 157	Would be as easy as a bad spark plug wire.
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05-30-2014, 02:17 AM	#4
tnastvogel Junior Member Join Date: May 2014 Posts: 24	So I assume the starter is cranking the engine which means you have power. I'd throw a new plug in there first even though it tested good on your lawnmower just to be on the safe side. You could try seeing if the plug wire came loose from the boot. Hold the boot and pull lightly on the wire to see if there's any movement. If there is, tighten it up. Also check for any loose electrical connections, especially the ones going to the ignition coil.
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06-01-2014, 02:26 AM	#9
gz4me + Senior Member Join Date: Sep 2013 Location: Santa Maria, California Posts: 234	no spark Sorry Mainlinecoffee. I jumped back on and did not read your post prior to submitting mine. Did not mean to repeat your thoughts.
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06-01-2014, 02:13 AM	#10
mainlinecoffee Senior Member Join Date: Oct 2013 Location: lexington ky Posts: 223	If it cranks over by pressing the button and by jumping the solonoid than I would look to a fuse or one of the dozen dumb safety/security switches. I was grounded for days due to a bad connection,I doubt a plug wire would be so drastic to go from vroom vroom to ded. I would think the plug wire would go more like vroom vroom pudda spudda ded.
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