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Lights dragging down Idle.
- aproud1
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aproud1
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- Biquetoast
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- King Jeremy The Wicked
Hi there. like the way the new site looks. Anyway finally have my 76 KZ400s running well enough to ride around town(just in time for the cold weather). For some reason when my lights (turn or brake) are on its dragging down my idle. What would cause this to happen? At least it runs. I'm going back out for another ride.
aproud1
I've always had this problem myself on my 750#1. And, while troubleshooting other stuff through the years, I have been reducing this problem.
I have found that on *my* bike, it's because of old, corroding wiring connections.
Every time I work with some connection, I cut and solder it, eliminating bullet connectors.
Next I'm going to do "the coil mod" that's so well known around here....
(1.) '75/'76 KZ400D - Commuter
(2.) '78 KZ750B3 Twin - Commuter
(3.) '78 KZ750B3 Twin - Commuter
(4.) '75 KZ400D - Sold
kz750twins.com
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- GargantuChet
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- Johnno
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Not well known enough, apparently. Any info on the coil mod (what it is, why and how to do it, etc.)?
All the answers to your questions lie in this document.
kzrider.com/component/option,com_docman/...ls/gid,106/Itemid,5/
The coil mod is a good idea if your noticing a decrease in idle when turning on your lights. I second Biquetoast's recommendation about the electrical system in general. On older bikes, the connections get corroded and don't conduct electricity as well. Using a wire brush and some contact cleaner to refresh the stock ones or just replacing them will likely improve your problem.
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- aproud1
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- aproud1
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- luvmykaw
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