Under 1800 RPM's miss-firing on GL1500 - Steve Saunders Goldwing Forums

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post #1 of 15 (permalink) Old 08-30-2012, 06:45 PM Thread Starter
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Looking for some input from you guys.



After 2000 RPM's it runs fine all the way to the red line. I can also hear it miss-fire at idle every 5 to 10 seconds but not constantly. Filled the tank and added a can of sea foam but no differance after a couple of days riding. Thanks in advance you guys.
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post #2 of 15 (permalink) Old 08-30-2012, 07:09 PM
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Ignition missfire probably, from a cracked coil, bad wire, plug cap or plug.

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post #3 of 15 (permalink) Old 08-30-2012, 07:11 PM Thread Starter
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Started a few weeks ago. I pulled the side plastic off and changed the plugs and cam belts. No differance. Old plugs still looked very good, all of them where light tan colored. I am starting to wonder if it is a coil or spark plug wire issue???
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post #4 of 15 (permalink) Old 08-30-2012, 07:14 PM Thread Starter
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Do the 88 GL1500's have replacable coil wires or are they made into the coils??
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post #5 of 15 (permalink) Old 08-31-2012, 07:31 AM Thread Starter
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Found a set of coils and wires on ebay. I have them coming and will let you all know if that was it or not. Thanks
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post #6 of 15 (permalink) Old 08-31-2012, 08:15 AM
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You've already bought the coils but to answer your question…. yes the coil wires are replaceable. Be careful with the plastic 'nuts' that secure them to the coils. They aren't very strong and with age they are easy to crack. Use some lube on both the wires and nuts to make it easier.

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post #7 of 15 (permalink) Old 09-05-2012, 04:41 PM Thread Starter
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I have it all apart now. What a pain to get to!!!



Looks like it might have been self inflicted. I found the rubber gromet to the overflow tank cracked and antifreeze ran down and over the coils & wires. I am hoping to get it back together tonight and see if this fixes the issue.



I will post some pics of the fix that I am going to do for the over flow line. I am going to use a copper line and go away from the plastic 90.
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post #8 of 15 (permalink) Old 09-05-2012, 05:02 PM
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Antifreeze destroys spark leads.

You need to replace them, or at a minimum spray them with a anti spark stuff.

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post #9 of 15 (permalink) Old 09-06-2012, 09:38 PM Thread Starter
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Not totally back together but close. Here are the pics for the overflow tube mod.
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post #10 of 15 (permalink) Old 09-06-2012, 09:40 PM Thread Starter
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another after I cut off the stock rubber hose that goes in the tank.
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