Testing coil/wire - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
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post #1 of 22 (permalink) Old 09-13-2016, 02:49 PM Thread Starter
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Testing coil/wire

Can someone tell me how to test a coil and wire on a 2001 vstar 1100 classic?

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post #2 of 22 (permalink) Old 09-13-2016, 02:55 PM
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You just trying to see if you are getting spark if so buy a spark plug tester


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post #3 of 22 (permalink) Old 09-13-2016, 03:38 PM
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It should all be in the Yamaha Shop Manual....

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post #4 of 22 (permalink) Old 09-13-2016, 03:44 PM Thread Starter
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Well i dont have a shop manual and I can see there is spark bit in higher rpms it is not igniting enough or it is getting too much fuel, one of the two. It cuts out at higher rpms and loads the cylinders up so it idles high for a few seconds.

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post #5 of 22 (permalink) Old 09-13-2016, 06:47 PM
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When was the last time you synched the carbs? What jets are you running? Stock intake and exhaust? What is the PMS set at?

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--- Striping, lettering and paint by Sick Mick 6* Tree - 2" extended forks 21" front wheel - HK Sideburners - Progressive rear shock Pods Sick Mick solenoid delete - Spring seat - and other stuff
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post #6 of 22 (permalink) Old 09-13-2016, 06:49 PM Thread Starter
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I just eyes it to sync the carbs. Everything is stock I think. I know the ais is removed.

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post #7 of 22 (permalink) Old 09-13-2016, 07:29 PM
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It may also be too lean at high RPM....like a plugged jet. Not enough fuel to ignite so raw vapors get pumped out. The carb would be the first thing I'd check. Coils on 1100's rarely have an issue.

If it was me, I'd pull them off, clean the jets and everything else, make sure the needles are seated, reinstall and synch.

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--- Striping, lettering and paint by Sick Mick 6* Tree - 2" extended forks 21" front wheel - HK Sideburners - Progressive rear shock Pods Sick Mick solenoid delete - Spring seat - and other stuff
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post #8 of 22 (permalink) Old 09-13-2016, 07:40 PM Thread Starter
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I went through and cleaned the carbs. I did not remove tamper caps and low and high speed needles though.

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post #9 of 22 (permalink) Old 09-13-2016, 07:41 PM Thread Starter
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If it were lean why would it continue to idle high when throttle is let off rather than go back to normal idle?

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post #10 of 22 (permalink) Old 09-13-2016, 07:57 PM
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I'm not saying it is...but it's a possibility I've seen many times. Either a vacuum leak or PMS not adjusted correctly will cause that as will a sticky throttle cable.

There is only one needle in these carbs. Did you check the side holes in the pilot jets when you had it apart? It would be a damn good idea to note jet sizes as well.... you never know who'sbeen in there unless you've had the bike since new.

I'd definitely drill out the caps on the PMS too....just to check them.

Also, doing a vacuum synch is extremely important.

If I were you...i'd invest in a shop manual and test everything..

Sick Mick* 2006 V Star 1100 Custom

--- Striping, lettering and paint by Sick Mick 6* Tree - 2" extended forks 21" front wheel - HK Sideburners - Progressive rear shock Pods Sick Mick solenoid delete - Spring seat - and other stuff

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