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Old 02-10-2009, 07:08 PM   #1 (permalink)
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Howdy all,



Quick question. I replaced my spark plug wires yesterday as part of my continous fight to cure the dreaded "carb cough". I bought a pair off of Ebay, which the seller stated was for an 82 to 87 GL1100and 1200. Icracked one of the coil caps while removing it and found the coil connectors did not fit. I put the wire thru the other coil caps and screwed them into the coils and had to use the supplied coil cap (more like a boot) to replace the one I broke. After installing all the wires, I started the bike and it fired right up. I went for a ride today and the new wires had no effect on the "carb Cough". Then I remembered something I read here about the stock plug wires had a resistor in them. I started to panic, thinking I was going to let the smoke out of some of the wires, but the old girl was still runnung. Is there a long term effect of running non-resistor wires? Am I going to fry my coils? I am leaning towards replacing them anyway. Also is there an after market coil that will work with the GL1200? Thanks in advance!!




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Old 02-10-2009, 07:21 PM   #2 (permalink)
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The resistor is in the spark plug connector so if you replaced those with a different connector you don't have the resistor any more. Don't worry, it won't hurt anything except maybe cause ignition noise in the radio. The best thing to do about plug wires is get 6 feet (2 meters for those metric people) of 7mm metal core plug wire and just replace the wires.
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Old 02-10-2009, 10:25 PM   #3 (permalink)
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Thanks Dave for the reply. The wires he sent me are 8mm. I am not sure about the type of conductor. I think it's silicon. I just wanted to make sure I wasn't going to fry something. Thanks!
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1984 GL1200A
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2000 GL1500SE 25th Anniversery Edition (Pearl Coronado Blue)

Some days it\'s not even worth chewing through the restraints...

"We ride and never worry \'bout the fall...guess that\'s just the cowboy in us all." -Tim McGraw

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Old 02-10-2009, 11:06 PM   #4 (permalink)
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Hi Jerry,



If you ever need another set of wires or coils keep me in mind. I am no where near as "pricey" as ebay. I have an extra set I will let go cheap.



Tom
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Old 02-10-2009, 11:20 PM   #5 (permalink)
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Thanks Tom, I will keep you in mind. My next day off is Friday and I plan to test my coils and see if they are within specs. I'll let you know!
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1984 GL1200A
1994 GL1500A (Gone to a better home)
2004 Harley Sportster 1200 Custom (Wifes Bike)
2000 GL1500SE 25th Anniversery Edition (Pearl Coronado Blue)

Some days it\'s not even worth chewing through the restraints...

"We ride and never worry \'bout the fall...guess that\'s just the cowboy in us all." -Tim McGraw

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Old 02-11-2009, 08:13 PM   #6 (permalink)
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There is no test of a coil that will tell you anything much.
If it's firing and doesn't stop firing when it gets hot, it's good. I have OHM tested a lot of bad coils in Honda cars and haven't found one yet that tests bad. Take them off and look them over for cracks and burn marks if you are suspicious of their integrity.
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Old 02-11-2009, 10:04 PM   #7 (permalink)
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That's good information to know. How do you test the spark? Should I remove 1 plug at a time and start it up to check for spark? Thanks again! Mana will be added!!
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1984 GL1200A
1994 GL1500A (Gone to a better home)
2004 Harley Sportster 1200 Custom (Wifes Bike)
2000 GL1500SE 25th Anniversery Edition (Pearl Coronado Blue)

Some days it\'s not even worth chewing through the restraints...

"We ride and never worry \'bout the fall...guess that\'s just the cowboy in us all." -Tim McGraw

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Old 02-11-2009, 11:08 PM   #8 (permalink)
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Your plug wires should be metal core. Unscrew your plug boot & look at the wire. If it is corroded, trim off just a little to expose new metal core and thread in your boots.

It is a good idea to replace the 4 boots if they are old.
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Old 02-11-2009, 11:32 PM   #9 (permalink)
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hatchetman wrote:
Quote:
Your plug wires should be metal core. Unscrew your plug boot & look at the wire. If it is corroded, trim off just a little to expose new metal core and thread in your boots.

It is a good idea to replace the 4 boots if they are old.
Well, that's how this got started. I replaced the original wires using ones I bought off ebay and they are silicone(?) I think. The seller said they would fit my bike, but they were 8mm wires and I had trouble fitting them in the coils. I also broke a cap off one the coils and had to use the rubber boot supplied with the wires. Which lead to be questioning if my coils were any good and how to check them. I should have read this forum more thouroughly...
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1984 GL1200A
1994 GL1500A (Gone to a better home)
2004 Harley Sportster 1200 Custom (Wifes Bike)
2000 GL1500SE 25th Anniversery Edition (Pearl Coronado Blue)

Some days it\'s not even worth chewing through the restraints...

"We ride and never worry \'bout the fall...guess that\'s just the cowboy in us all." -Tim McGraw

http://emsangelsmc17.com
http://roadguardians.org
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Old 02-12-2009, 09:01 AM   #10 (permalink)
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You need a set of 7mm copper core wire plug wires. To my knowledge you can't use a silicone center wire on this year of bike. I got a set of 8 (7 mm copper wire plug wires) off ebay for about $10.00 and they work fine. ( I end up with a spare set) They only come with the plug end attached to the wire so you'd have to get the coil ends and you have to get a set of threaded tips off an old set of plugs to put on the plug wire end of your plugs. Auto style wires use the bigger end on sparkplugs.

Hard to say without seeing it, wheither the broken cap will not let the plug wire stay in place. You can check the coils for resistance, just put an ohm meter across the two plug caps on each coil ( plug wires off ignition off) Resistance levels should be about the same for both coils. You can check the plug wires the same way both not pluged into the coils & plugged into the coils. I can't recall the actual resistance level, but you can do a search or check a manual. Coils normally cause problems when they are heated up.
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