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  #1  
Old 02-29-2004, 05:49 AM
DAVOS99's Avatar
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91 cr500 starting problem- of couse

I traded my sled for this 91 cr500, and I saw it run and drive but did not ride it myself as it was an ice covered road, but I saw it run. The guy kicked the heck out of it and it finally went over and was fine for starting once warm.

I have had it outside for the last week and it has been 15 degrees at night, and 35 during the day.

I turn on fuel and pull choke up and it slowly leaks gas through the carb to the overflows and it won't statrt after 20 or 30 kicks.

I cleaned the carbs pretty good. I don't have the manual yet to test the float height.


air/fuel screw is 4 turns out from being set against carb, this has to be it right? i have never seen one that far out. i thought industry standard was 1 and a half turn out and then you go slow from there. also what is the proper fuel/oil ratio for this monster.

i am going to try the tricks for starting this thing then i guess it will be a full carb take down, i will get back to you tonight.
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  #2  
Old 02-29-2004, 08:53 AM
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Default Re: 91 cr500 starting problem- of couse

My '93 starts pretty easily but maybe some of that has to do with living in California where it doesnt get that cold?

My air screw is 1 1/2 out.

I use 32:1.

As for starting tricks...when cold, I use choke and lean the bike over till gas flows out overflow. Then I kick it with no throttle till it starts. Usually 2-3 kicks.

When warmed, I grab full throttle and kick once or twice.
Also, kick from the very top and kick hard.

I've never had the hard-starting probs that I hear about alot. Sorry I couldn't be more help.
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  #3  
Old 02-29-2004, 09:00 AM
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Default Re: 91 cr500 starting problem- of couse

Did you check the spark plug? Pull the spark plug out and check to see if you are getting spark. Thats the best place to start if you checked the fuel and know its getting to the carb. Good luck.
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  #4  
Old 03-01-2004, 10:36 AM
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Default Re: 91 cr500 starting problem- of couse

If you havent done so already, I would install a new plug. It may or may not help your starting trouble but it definately wont hurt it.
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  #5  
Old 03-01-2004, 12:02 PM
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Default Starting

LOL people who havent owned 500s trying to start one crack me up After having owned a 1991 CR500 that had been bored (compression reliefs gone from cylinder) you dont want to be kicking the bike over at all!

The correct starting procedure for a CR500 (most are very hard to kick) is as follows. From a cold start I turn the gas on along with the choke and tip the bike over on the side until the float bowl vent tube spits out a little gas. After that then I stand it straight up and place the bike into 2nd gear and do the retard rock..LOL just roll it foreward and back about 5-10 times to prime the jug. Put it back in neutral, move the kickstarter to find the hard spot and put some pressure on till it just edges past that point return it to top and jump on it!

My bike started within 1-3 kicks every time even in 0 F weather. When hot I can usually just jump on the kicker and it started good every time.

Have fun!
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  #6  
Old 03-02-2004, 01:04 PM
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Default Re: 91 cr500 starting problem- of couse

My 500's 0.5 overbore by EGorr. Never had much of a problem starting it.

Everyone who's owned a 500 has particular tricks they use to start that bike. On my bike,once it's warmed up, one kick therefter always starts it right up. Stone cold takes two, sometimes 10 kicks. Often than not, if I don't catch the piston at its max. resistance, then the kick won't be hard enough to go past this very last inch of travel until the lever hits the backside of the footbar, then the bike doesn't roar to life.

My trick here is that I start the cold bike while it's still strapped to my trailer. Both straps are holding the handlebar taught, both of my legs are on the footpegs, then I can concentrate on kicking it. It often takes me four to six kicks doing it this way, but the bike almost always start.

I've tried the rocking thing back and forth, but the result is still the same for my bike whether I do so or not. I'm sure that this trick works, otherwise the previous owner wouldn't have taught it to me.

Oh, and one other thing I've noticed too. VP C-12 fuel starts my motor to life so much easier than premium pump gas. And my motor just feels like it runs cooler and doesn't mind me lugging it through woods all day long too. I've yet to change out the plug on her since I've bought it, which was July of last year.
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  #7  
Old 03-03-2004, 01:02 AM
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Default Re: 91 cr500 starting problem- of couse

i would fix the float first. when it is really cold i screw my airscrew in all the way,,then out 1/4 to 1/2 turn. then just kick as normal with the enrichener valve up. when it gets started i turn off the enrichener then reset my air screw to what it was before.
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  #8  
Old 03-03-2004, 02:53 AM
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Default Re: 91 cr500 starting problem- of couse

Dart 440`s method is very simular to the one i use...rocking the bike warms up the piston and rings for a much better seal...the ring transfers its heat through the ring lands to the piston...remember pistons are designed to expand when heated and seal much better when actually round...when cold they are eccentric shape still...the ring also expands with heat-which is actually the key here...one time i was waiting at the gate for my moto with the bike shut off...there was a slight delay...when it was time to fire that baby up-mine was refusing...so,i leaned the bike over on the guy next to me and smiled and jumped over the gate calling a time out signal...my buddy then came over and rocked it for me so i could save my energy...it started first kick...keep in mind the little heat this rocking method produces disapates quickly...i usually rock it for 3 minutes just so it fires 1st or 2nd kick...finding the sweet spot on the kicker is also very important...try this rocking for 5 minutes and then you`ll be a firm beleiver in this method as you`ll really notice the difference...the more you get to know the cr500-the more you`ll really like it...i hate the dead start gp`s in cali with the hands on the helmet trick...outta 150 guys-lots don`t wait for the signal...kicking 8 times while the huge pack is getting away really sucks...they gave the kill your motor signal-then delayed things-so i fired mine back up...it was giving the starter crew fits
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  #9  
Old 03-03-2004, 05:05 AM
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Talking GOT IT- THANKS

This forum is super, you guys are right on. I was worried that buying an older, unique bike like the '91 cr500, I thought I was going to have some problems with the tech stuff, but ya'll are fantastic. I cleaned some nasty boogers out of the fuel inlet needle area and shined up the rest of the carb. for good measure. I did the retard rock and wow 2nd kick and I was running solidly. I am running 32:1. all seems well.
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  #10  
Old 03-03-2004, 05:11 AM
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Default Re: 91 cr500 starting problem- of couse

dart's referal to priming the jug was not refering to any heat transfer. he does it BEFORE he cranks it. i am assumint that that is done so the pisston moved up and down, drawing in some fuel/air mix.
this would PRIME it with some fuel.
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  #11  
Old 03-03-2004, 01:10 PM
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Default Re: 91 cr500 starting problem- of couse

Paul Reed:

That is too funny , the way you describe the dead start scene.

I recently ran a WORCS race on my CR5, and no one was really sure whether WORCS ran dead starts. WHen I got to the gate for my round, the ref. said the race would be engine running, bike in gear, both feet to the right of the bike. That took alot of the pressure off of us, that's for sure.

Even if it had been a dead start, once my bike warms, one kick is all that it has taken so far to fire her up. I'm sure as the rings lose pressure, this will change.
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  #12  
Old 03-03-2004, 01:19 PM
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Default Re: 91 cr500 starting problem- of couse

Davos99:

One of the things that attracted me to this '91 cr5 of mine was the power to weight package.

I've ridden my cr5 for the past seven months, mostly for fun, and have not had to do ANYTHING to it. I take the bike down every third ride, do the usual fluid and air filter stuff, and make my checks here and there on the coolants, cables, etc... and so far nothing breaks, comes loose, or needs replacing. I can't say enough about the low maintenance on this bike.

I think cr5's intimidate riders, so they don't push them to the tilt. Even I know better than to go WOT on mine. So these bikes don't ever get stressed out like the CR250 or 125. Less parts to replace means more riding time.
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  #13  
Old 03-03-2004, 02:31 PM
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Default Re: 91 cr500 starting problem- of couse

Is that the infamous Paul Reed from Washington state?
Dude you rock! I have eat’n your roost many of times! This old fart has gotten back into MX this year.
I plan to do some sandbag’n in the old fart class this season. We’ll see how many races I can get in before they kick me out to another class <G>

Zoom
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  #14  
Old 03-03-2004, 03:05 PM
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Default Re: 91 cr500 starting problem- of couse

OH.... and sorry about the KX icon in the CR thread <G>

Zoom
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  #15  
Old 03-03-2004, 04:24 PM
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Default Re: 91 cr500 starting problem- of couse

hay,no worries there Zoom,if ya wanna quit eatin roost-play video games only or get a cr500 and gimme your machine-whatcha got?..an kx100...jokin...BTW...i had been up for two days straight working when i made my post-ooops!-i thought Dart440 said he rocked it 5-10 minutes-not 5 to 10 times...y`all try rockin for 3 to 5 minutes with yer thumb on the kill button-after laying it over - gas off when rocking...then quickly find the sweet spot on the kicker in nuetral-turn on gas and choke as needed-jump up in the air and come down kickin like Bruce Lee....it should make you a firm beleiver-it will make a hard to start cr500 fire up right away...A.K.A. the CR500 Starting Ritual...some are easier than others...i had an first year 1984...also the fastest year motor-air cooled-highest horse power output anyways...gobs of torque...one scary mutha...water cooling helps after about 15 - 20 minutes or so-specially when it`s 110 F out
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  #16  
Old 03-03-2004, 04:35 PM
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Default Re: 91 cr500 starting problem- of couse

Jedd,that starting way seems much cooler to me....150 or more guys heading to the tight first turn,instead of just 40 is cool to watch....you new guys need to post some pictures in your personal photo gallery....so that everybody can go check`em out....nothing wrong with the 1991 cr500-it`s a screamer
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  #17  
Old 03-03-2004, 05:26 PM
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Default Re: 91 cr500 starting problem- of couse

I'm a newbie on this site. I'll have to figure out how to get to the personal gallery and whatnot.

For now, here I am on my cr5.

Last edited by jedd; 03-24-2006 at 10:11 PM.
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  #18  
Old 03-05-2004, 11:27 PM
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Re: 91 cr500 starting problem- of couse

Man that is sweet. I dig the black plastic.
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  #19  
Old 03-05-2004, 11:53 PM
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Default Re: 91 cr500 starting problem- of couse

yeah sweet,i also like the bars and the steering dampener,front brakeline,and the smile on this riders face!
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