[waterboy]

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[Desi Bike]

Auto decompressor is the loud clack, the hunting for idle would be due to the factory spark plug. Replace it with a better one. I dont have the plug number off the top of my head (someone else will) The idle will smooth out with that. In the mean time... "this just happens you gotta let it warm up and give it some gas" stock spark plug doesnt idle very well.
Just my observations.

[mattsz]

+1 on the decompressor.  Sounds just like mine.  In the proper cold, it will do that steady for a couple of minutes if I let it sit at idle that long.

I can't corroborate the idle spark plug fix, as mine has hunted at idle quite noticeably from the beginning, for about 2000 miles, despite my changing to the recommended plug, which is the NGK BPR6ES, at about 50 miles.  It also, once warmed up, idled extremely high.  Check out this thread for that discussion:

http://www.enfieldmotorcycles.com/forum/index.php/topic,15424.msg165913.html#msg165913

It still hunts, but not as noticeably since the idle is down nearer to where it should be.  Still not happy with it, though...

[barenekd]

The hunting idle is because of the decompressor opening and closing. It'll quit when the engine warms up a bit. See the other two posts under the Classic Models section.
Bare

[waterboy]

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[Arizoni]

The auto decompression device is located in the exhaust cam.
It is spring loaded to it activates when the engine is shutting down.  When the engine starts, a centrifugal weight is supposed to move outward and cause it to retract so it no longer holds the exhaust valve slightly open.
If the oil is cold the weight sometimes cannot move freely so the clacking continues.

When you hear this clacking just raise the engine speed a little and the weight will move to disengage the auto comp.
IMO, it is better to slightly rev the cold engine just enough to stop the clacking than it is to let it continue.  After all, when it's clacking, it's holding the exhaust valve open.

The varying idle speed can be helped by doing as the others have suggested and changing the spark plug.
On my 2011 G5, slightly lowering the warm engine idle speed also seemed to help.
Don't lower it too much though.  It should be idling at about 1000 rpm.

As the miles accumulated on my bike this "searching" seems to have gone away so if lowering the idle speed doesn't help just give it time.

I'm betting that after your bike has 8000+ miles on it like mine does it will idle nice and smoothly.

[GA-DK]

You might slightly increase idle speed.  GA-DK

[TWinOKC]

 As these bikes get more miles on them, they run a lot better and shift easier, vibration is less, just watch for loose fasteners and ride easy during the break-in period. 

[waterboy]

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[Desi Bike]

excellent feedback gents. thanks for this.  I am stoked have a bike still.  Sandy kicked my towns ass (long beach ny) but I moved my bike off island the day before the storm!

Smartboy waterboy.
Welcome to the RE forums btw... Craig in southern Ontario.

[mattsz]

Well, it sounds like we're easing your mind, which is good, but I must point out that for me, changing the plug didn't help with the idle, and my bike only hunts for idle speed after it's warmed up.  Steady as a rock when cold, which, as I understand it, is when the ECU isn't mucking around with things.  Do I have that right?

Anyway, 2000 miles and I never know where my bike will be idling when I come to a stop.  According to Arizoni, I should have only about 4000 more miles more of it and it'll be fine...