KX Riders

Maintenance & Technical => KX500 Original => Topic started by: karlosthejackel on April 10, 2014, 06:55:26 PM

Title: UK jetting and cold starting
Post by: karlosthejackel on April 10, 2014, 06:55:26 PM
Ive seen the charts but seeing if any UK guys have anything tried and tested. Ive not busted the carb open yet,in fact ive not even ridden the bike as I cant start the thing. Ive bought the jets according to the chart and my elevation which is anywhere between 150-600ft on the different tracks ill be using it on with varying uk temps.
The bike is fresh in from California. Starting wise it gives a backfire now and again and im scared of a kickback so im a bit reserved on giving it some!!. It started 4th or 5th kick when it was delivered by the seller last week and that was without choke from cold and gave a couple back fires before it went. Ive read that a properly set up bike will start well from cold
Title: Re: UK jetting and cold starting
Post by: sandblaster on April 10, 2014, 07:00:55 PM
For your elevation take a close look at 55/168
That works well down to 50 degrees F and from 0-1500 ft.
Title: Re: UK jetting and cold starting
Post by: karlosthejackel on April 10, 2014, 08:29:29 PM
Thank you for that. I thought it best I open the carb so I have and it has the following

58 pilot
142 main
N82M needle on clip 3

If I go with your jetting what needle would you recommend?

Many thanks Karl
Title: Re: UK jetting and cold starting
Post by: Foxx4Beaver on April 10, 2014, 08:44:42 PM
142 main

142??!!...d**n, that's like a sippie cup :-o
Title: Re: UK jetting and cold starting
Post by: karlosthejackel on April 10, 2014, 09:00:30 PM
142 main

142??!!...d**n, that's like a sippie cup :-o

scary stuff. glad ive opened her up now!
Title: Re: UK jetting and cold starting
Post by: Foxx4Beaver on April 10, 2014, 09:02:29 PM
yeah you could/would very well fry the top-end running a 142.
Title: Re: UK jetting and cold starting
Post by: sandblaster on April 11, 2014, 03:36:53 AM
142??? Whoa.... that's a bit small....
I would start with 55/168, stock needle, 3 position to start and I might play with the 2nd position once I verified that it wasn't running lean.
142???? That thing must be pinging like crazy at WOT  :-o