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  #1  
Old 10-22-2007, 08:39 PM
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Default CR500 starting

I have a question about CDI. Either they work or they dont right? My 89 CR500 has become somehwhat more difficult to start, even after complete rebuild, what components of my ignition system could affect starting?
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Old 10-22-2007, 09:08 PM
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Default Re: CR500 starting

I have had a stator go south and it would be hard to start.How about rolling it off,if it starts easy then,iwould have the stator checked out, mine would start that way good but hard to kick over.Also you put in new crank seals,how about reeds,intake boot all of these can cause your problem.
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Old 10-22-2007, 09:33 PM
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Default Re: CR500 starting

Just a dumb little trick... I would see guys lay them over until gas comes out of the overflow, then kick it over and start right up.
Don't rule out fuel issues right away.
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Old 10-23-2007, 12:25 AM
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Default Re: CR500 starting

The PJ carburetors that those came with are not without some problems. When my CR500 was adjusted to idle, it didnt like to start easily. Flooding them helps, but some of us don't like laying our bikes down on their sides and running gas onto the ground. Even when it is dry and nice.

I have an 87, and especially when the weather was cold it required quite a few kicks if it was tuned to run good warm, and idle. It was simpler just to turn the low speed in until it was 1/4-1/2 out. At 10 degrees F, it would start in 2-3 kicks after sitting all week (1/4 turn out). Naturally you had to reset the low speed as it warmed up.

The PWK carburetor is much easier to deal with, but like the PJ the idle must be set pretty low for it to start easily cold. Odd how two such different carburetors act so much alike sometimes.
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Old 10-25-2007, 12:01 AM
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Default Re: CR500 starting

Hey, Thanks a ton for the tips on starting my CR500. I came straight home from work and went right to my garage and tipped my bike on its side till fuel came out the overflow, choked it, kicked it 3 0r 4 times really slow to prime the motor, then gave her one good kick from TDC, gave er a little throttle, and she lit right up! She even IDLED for ten straight minutes! Now I can save the fatigue and sprained ankles for the trail, not just starting that damn beast! I mean it, thanks a ton for your great tips!
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Old 10-25-2007, 07:31 AM
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Default Re: CR500 starting

I hate to say it but about 12 yrs ago I bought an 89 for super cheap because the guy couldn't get it started ever, he said it was a piece of @#$%. So I laid down the cash, leaned it over and kicked it one time started up and drove it into the trailer. The look on that guys face was something else. The problem was I turned around and doubled my money two weeks later.
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Old 10-25-2007, 08:56 AM
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Default Re: CR500 starting

I had the first year water pumper cr500 and that was routine for them back then. The lay down kick deal was very common..
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Old 10-25-2007, 10:20 AM
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Default Re: CR500 starting

Man I never seen so many people who liked to lay their motorcycles on the ground. It must just be me lol, but I try to avoid that!!
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Old 10-25-2007, 10:44 AM
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Default Re: CR500 starting

Quote:
Originally Posted by ossagp View Post
Man I never seen so many people who liked to lay their motorcycles on the ground. It must just be me lol, but I try to avoid that!!
I have never seen them layed on the ground but if you just tilt the bike at maybe a 45 degree angle until fuel comes out of the over flow your good.
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Old 10-25-2007, 10:55 AM
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Default Re: CR500 starting

if i laid mine at a 45 degree angle, and fuel appeared from anywhere, I would fix the reason that it did that. :-).

I guess I just like mine to appear like they start easily on their own. Again, I just must be different.
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Old 10-25-2007, 11:05 AM
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Default Re: CR500 starting

At what degree angle would you expect the needle to allow more gas in the bowl then straight 90?
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  #12  
Old 10-25-2007, 11:21 AM
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Default Re: CR500 starting

I would have to take a carburetor off and check that to be honest. (since I dont want to just lay the bike down and guess.) The vents are pretty high up on the PWK and the PJ. My son's is in the garage right now about 40 feet away. I will roll it out and hang it off a tie down at exactly 45 degrees and see if anything runs out while I am at work. (If it does, I will ride him unmercifully!!)

The way the float is designed though, as you tilt over, it will shut fuel off earlier in most cases. The float globe on the low side is trying to raise up as the fluid moves over. If you start with an empty carburetor bowl, and fill in straight up. Then empty it and fill it again tilted, a properly adjusted one will have less fuel in it when the float rises to the point of shutting off the flow, in theory at least. Laying it over can stick the float by drag etc and hold it on . Laying it all the way over of course will disable the float from moving via the floatation affect alltogether.

I still don't like the idea of laying a bike down that didnt fall down. Maybe I am susperstitious. (As a kid I never would play with crutches. You must have all heard that 'admonition'.)
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Old 10-25-2007, 11:27 AM
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Default Re: CR500 starting

Oh I can't wait to here the results of the Son's Bike Test! It is part of are ritual because my son nickname is "Crash" to hold the throttle wide open when he gets up to go again. We call it the "Starting Procedure"
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Old 10-25-2007, 12:08 PM
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Default Re: CR500 starting

Well I know Andy is going to Laugh but I had a TMX 38 setting here so I thought I would do an experiment. I filled the bowl completely so that no more could go in, even slight forced air couldn't over come the float needle. I know the float is set correctly. I turned it to both sides and couldn't get any to come out of the over flow even at a 90. The top vents flowed at about 55-60 degrees though. Nothing ever did come out of the overflow. Now this is a test for the Mukini.

Sincerely, Andy's Research Dept.
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  #15  
Old 10-25-2007, 12:22 PM
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Default Re: CR500 starting

For the next step you need a graduated cylinder and to be outside.
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