1985 500cr Will Not start...HELP!

I am the 2nd owner of this sought after beast, I bought it a year ago and it ran.I have yet to trail ride it /race it.I Installed new PVL ignition, Clutch, Carb had debris in the pilot and main jet had debris, Installed a fuel filter. ran again great.. but now only back fires occasionally, it has spark, and reeds are in great shape.I have it up for sale and hate too but so fed up. The bike is in great shape. I even put new tires front and rear. replaced all the plastic as it was faded. I am so frustrated with the bike as I was an avid Husky owner for years and was lucky to find this bike from EAST-COAST vintage racing( you can see it on there webpage). Can anyone enlighten me with this problem.I want to sell it for a reasonable price. The bike is in Baton Rouge and is a 9 , mcdavies1@cox.net. 337-254-0112 mark , 337-349-4826 connie

Ignition is where?

What jetting do you have

are you trying to tell us a 500 is sought after? are you trying to sell us the bike or ask for help selling it?
is the bike flooded, and is it timed before top dead and not after? are you actually able to start a 500? because some people just cant.

The local dealer when there was one a long time ago said do not get a 500 unless you can start one.
The 510 four stroke I have starts cold wonderfully, hot starting well that can be another issue. Selling or making a parts bike out of it will eliminate the frustration. I will assume the part that I quoted means you can start it just after working on it it will no longer start.

Take the spark plug out, put a pencil in the hole and move the piston to the bottom. Get an air chuck you can adapt a piece of copper tube about 1/4 inch outer diameter to and carefully put it down the spark plug hole and thread it through one of the ports, not the exhaust one. Blow air into the lower end. Or just let it sit like that for a while, a few days but minimum over night. Turn the gas off once the float bowl is full, needless to say changing out the needle and seat is advisable even if they look good. In line fuel filter. Take the gas line off the carb when done riding. You get the idea this may or may not be the correct line of attack.

Did you try pull starting it, I really do not approve of that as the one time I resorted to that, and it worked, a reed cracked to the point it would only idle the next time out.

These things particularly that displacement and shock design put a lot of stress on the rear of the magnesium engine cases. To be claiming it is a 9 would mean that the inserts are still firmly in place. Have you really assessed this detail.

PVL ignitions are well known not to be a favorite choice for open class bikes. This has been well documented here on this Forum. Once started it should run fine. Roll the Bike down a Hill and Bump Start it. Absolutely make sure the Slide in the Carb can be herd hitting bottom when You release the Throttle before doing this. Or install the original Ignition that was on the Bike when You bought it back when it started.

mine wont kick start either . but i think the broken ring has something to do with that . it kickstarted good all day untill that .

thought it was pretty well decided that a pvl and a 500 doesnt work . the kick over rpm is too low to make any power

Going to order a few more Electrix units soon for my projects. Anyone please let me know if
anyone is interested in getting one we can save on shipping.

What is the cost each on those Gary?

Gary, one for my 430 please....
So I will have an engine with Lectron and Electrix on....
Thanks.
G