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Message started by Robertomoe on 12/12/07 at 14:03:40

Title: (no)spark plug
Post by Robertomoe on 12/12/07 at 14:03:40

Recently, engine hasn't been starting. It turns over but never catches. Just in case, I checked the battery at autozone and its still good. I figured that its either the spark plug or the carb, so I pulled the plug out and lo and behold, its soot black and doesn't spark. (I've also had some mixture issues recently, which probably explains the blackness.) "Great," I thought as I went to buy a new spark plug, "I'll just swap this out and be good as new." Not so, however. When I put the new plug in, it didn't spark either and the engine still doesn't catch. Theres nothing obviously loose or disconnected. Any ideas?

Title: Re: (no)spark plug
Post by barry68v10 on 12/12/07 at 16:12:14

Plug wire? Fuse? CDI box?

Title: Re: (no)spark plug
Post by T-Mack1 on 12/12/07 at 17:40:03

Robertomoe wrote:

When I put the new plug in, it didn't spark either and the engine still doesn't catch.

Question.......did you do the "hold the plug to a ground point" (metal without paint) and check for spark before putting it in?

Sorry if it sounds like a dumb question.....but have to ask to check off possiblities.

Title: Re: (no)spark plug
Post by Robertomoe on 12/12/07 at 17:41:49

fuses are good
Wire seems to be fine
CDI?

we pulled the plug and tried starting it...no spark... does the spark plug need to be next to a ground to get a spark?

Title: Re: (no)spark plug
Post by thumperclone on 12/12/07 at 18:47:27

Robertomoe wrote:

fuses are good
does the spark plug need to be next to a ground to get a spark?

yes lay it on the engine dont hold while cranking!!!

Title: Re: (no)spark plug
Post by T-Mack1 on 12/12/07 at 19:42:15

Yes, ....it is electrical...... Needs a complete circuit.

Like thumperclone says, holding it with bare hands could light up you life (pun intended). :o

CDI..... another name for the ignitor, or Electronic Ignition control module.....

Title: Re: (no)spark plug
Post by slavy on 12/12/07 at 21:18:38

check the 2 fuses under the seat first. If OK:
unscrew the spark plug cap from the wire and check the wire for spark . If there is a spark- blame it on the spark plug cap. If there is no spark- ask again and somebody will help.

Title: Re: (no)spark plug
Post by Robertomoe on 12/14/07 at 11:24:49

well, new development. I went to try starting it one last time before leaving it over winter break- when I hit the starter, the power would cut and flicker twice. After two or three tries it cranked but really slowly

battery's toast?

Title: Re: (no)spark plug
Post by T-Mack1 on 12/15/07 at 18:57:32

Have you recharged the battery lately? Also, if it's the un-sealed type (has little plugs/caps to fill water) , have you checked water level latey?