Spark plug, wire, cap replacement help.

PatNoPed · #1 07-10-2008, 11:21 AM

Last night I went for a short cruise around the neighborhood and I noticed sparks jumping from my plug/cap to the top of the engine. I couldn't see this happening in the daytime but now I know why I'm getting misfires and jerky performance. My question is about replacing the spark plug wire and cap. Do I have to cut the old cap off and wire up a new one? How do you replace the plug wire with a better one? I think it will run much smoother with a better connection.
Thanks y'all!
Patrick

**Dave31** · #2 07-10-2008, 11:30 AM

The stock plug and wire are not great on these motor's...You will notice better improvement with new one's...

http://motorbicycling.com/f30/bicycl...-plug-755.html

http://motorbicycling.com/f3/spark-p...-boot-634.html

A good 7mm plug wire and cap can be picked up at any auto parts store

thatsdax · #3 07-10-2008, 11:41 AM

it simply un screws. The plug wire is screwed into the CDI igniter unit with what looks like a sheet metal screw. Simply twist the wire counter clockwise and it will unscrew from the CDI Black box unit. Thanks..

PatNoPed · #4 07-10-2008, 01:50 PM

Cool... Thank you! My auto parts store didn't have individual wires, I'll have to drive around some more.

misteright1_99 · #5 07-10-2008, 02:05 PM

Quote:

Originally Posted by PatNoPed

Cool... Thank you! My auto parts store didn't have individual wires, I'll have to drive around some more.

Ask them for a Distributor wire......They are sold individually.....

PatNoPed · #6 07-10-2008, 03:20 PM

That was going to be my next question! Thank you! I just left the parts store. They said most of the wires they sell are carbon cored, the one off the bike engine has a copper core. Does that matter? What would be a good vehicle distributor wire to order (ie make n model)?

**Bikeguy Joe** · #7 07-10-2008, 04:59 PM

Quote:

Originally Posted by PatNoPed

That was going to be my next question! Thank you! I just left the parts store. They said most of the wires they sell are carbon cored, the one off the bike engine has a copper core. Does that matter? What would be a good vehicle distributor wire to order (ie make n model)?

I believe our fearless leader Cruiser has wire/cap combos for sale really reasonbly priced....but you'll have to ask him.

As for the wire if he doesn't, measure the length of what you've got, and ask for a 7mm wire of that length or close...I don't see any reason why a carbon core wouldn't work just as well as a copper core.

Or.....buy a "do it your self" wire kit, use what you need and sell the rest here on the "Swap Shop".

misteright1_99 · #8 07-10-2008, 05:29 PM

Quote:

Originally Posted by PatNoPed

That was going to be my next question! Thank you! I just left the parts store. They said most of the wires they sell are carbon cored, the one off the bike engine has a copper core. Does that matter? What would be a good vehicle distributor wire to order (ie make n model)?

Just ask them if you could see what they have. They took me to the back where they were all hanging, and I picked my own. I got the longest and cut it to the length I wanted and now have extra wire, in case it gets damaged..
Might be tough to find a copper core. I dont think it makes much difference...

**Norman** · #9 07-10-2008, 07:23 PM

I can get you copper cored plug wire industrial grade 7mm this wire is used on engines that run 24 hrs 7 days a week. I'll check with the shop as for price if your interested. Let me know by PMing me
Norman

PatNoPed · #10 07-10-2008, 10:49 PM

I ended up buying a cheap set of wires for a chevy car. Cut to fit and I have 3 extras. They're the regular carbon type and it runs great now. No more misfires, runs and idles nice and smooth, and starts easier! I'm glad I went for that night ride cause I wouldn't have ever seen those sparks dancin out from that plug wire. Thanks for the help everyone!
Patrick