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Problems With Taking off

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Problems With Taking off

Postby FueliesRock » December 27th, 2001, 7:22 am

I have a ZL 500 efi 2000, with about 2300 miles on. I have a rumble pack silencer, V-force 2 reeds, and a 1.4 inch paddle track. I was out riding today, and after I rode a while, when ever I would hammer it from stoped it would act like the brake was on till I got up to about 20 mph and then it would take off, but if I hammer it from 20-25 it would take off right away. I still has good mid-range and top end power, it just doesn't at the lot end. I tryed unhooking the throttle safety wires, and that didn't help, I tryed plugging in the fuel wires on the computer, that didn't help, the plugs looked fine, I didn't have a chance to changed them yet and try new ones. I just checked the compression and it was good, same in both cylinders, I didn't today because it was still hot. Any help would be great, thanks
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Problems With Taking off

Postby Flatlander » December 27th, 2001, 8:47 am

a worn belt will act like that /

*This Message was edited on 27-Dec-01 01:51 PM by FLATLANDER*
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Problems With Taking off

Postby JLH » December 27th, 2001, 10:46 am

HI i cant help you with your problem, i dont have much experience with efi but i was wondering were in ND you live if you do have enough snow to ride . i am looking for some riding this weekend thanks
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Problems With Taking off

Postby michahicks » December 27th, 2001, 11:25 am

Bet ya got a lotta belt deflection to go with that poor low end acceleration too! Easy cure, no sweat. There is probably an adjustment(3 screws? sorry, it's been a while on a cat) on your secondary that controls that. Set it up so your belt has enough deflection to say it has some. Then look out, your holeshot will be back!
I am assuming that your belt is within specs. as far as wear (minimum width).
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Problems With Taking off

Postby CATPRIDE » December 27th, 2001, 12:33 pm

I experienced the same thing on a 99 zl 500 carb
that i also had put v force 2 reed valves on, if youv'e had your sled backfire since you've installed your reeds,it could be a cracked/broken reed petal,this will cause a poor low end until you get your rpms up where your petals would be opening up,then you regain power thru mid,and top range.
only my 2 cents worth hope it helps.
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Problems With Taking off

Postby FueliesRock » December 28th, 2001, 2:53 am

Hey, thanks guys, I am beginning to think that it is the belt, I did have the driven clutch off earlier that day, I moved my spring one hole looser, I will check it over again, thanks for all the help. I live in the southern part of North Dakota by the way, south of JAmestown.
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Problems With Taking off

Postby RIGGS » December 28th, 2001, 2:35 pm

CATPRIDE. My brother in law bought a '99 ZL500 used from a "rock star" that rode 'em hard AND he has the same backfiring problems you discribe. He also lost almost 8mph top end since last year.
I said "it's just running rich... Take it in and have 'em dial it in..."
But I never thought about the reeds?

*This Message was edited on 28-Dec-01 07:50 PM by RIGGS*
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Problems With Taking off

Postby Smoothride » December 29th, 2001, 3:53 am

I had a 96 ZR 600 EFI with V-force reeds in the shop with an intermittant problem with the motor cutting out and losing power. It turns out that the V-Force blocks move the injector rack rearward so that the wire harness rubs on the steering column. The one I worked on would cut out when the handlebars turned. Check it out. Also, a broken motor mount would do the same thing and would make the belt too long.
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