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post #1 of 5 Old 04-21-2008, 12:21 AM Thread Starter
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Sled: 1999 ZL 600 EFI
07-08 Mileage: 1000
06-07 Mileage: 100
ATV: n/a
2007 Mileage: n/a
2006 Mileage: n/a
i recently acquired a sled from my father in law cuz his son got it to start on fire. i have been around skidoos all my life and have seen quite a bit to know. but i am new to efi systems and i am curious if anyone has a diagram or picture of the vacuum routing to the fuel pressure regulator as well as i have already tried to fix my problemm with the "tss" by unhooking it and still it backfires into the exhaust like it is loading up on fuel. i ahve went through and fixed all the very bad stuff that was burnt and when its all done i will post pics as i ahve started to repair the body of it before i joined this group plz help. have snow here and want to take advantage of it ASAP if possible.
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post #2 of 5 Old 04-21-2008, 02:02 PM
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Sled: '10 SnoPro 500/ '05 T660 ST
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I'm assuming its the '99 zl 600 EFI? What you're calling the vaccum on the regulator is not acutaly a vacum. Its just plastic tubing put in place to vent the regulator, its does not get attached anywhere it just hangs there. Post pics of before and after!

2010 AC SnoPro 500 - 1.75" Backcountry Track, 9t Super Sprockets, FettBro's RideTech System, J&T 4th Wheel Kit
2005 AC T660 ST Green - (Build in Progress)
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post #3 of 5 Old 04-21-2008, 04:12 PM Thread Starter
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Sled: 1999 ZL 600 EFI
07-08 Mileage: 1000
06-07 Mileage: 100
ATV: n/a
2007 Mileage: n/a
2006 Mileage: n/a
ok i unhooked it but wondering what the hose comming from bottom of the ecu goes to it comes outside the airbox and is just zip tied where it is and also wondering what the new problem i have is. i took it for a ride last night to figure out a problem and this morning when i go to turn the motor over it acts like sumthing is holding it from turning and its not seized i know this for a fact. is there a chance that the flywheel lost a magnet that is causing it to jam. because all the noise when i get it to finally move comes from the stator area. sounds like grinding and cracking
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post #4 of 5 Old 04-21-2008, 04:33 PM
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Same thing for the ECU, the hose is there to hang free, not be conectec. It's a barometer so it can compensate for the elevation the sled is at. It's fine the way it is. You're proplem could be stator related. You can either check the ohms spec on the stator or pull the flywheel to make sure its not that.

2010 AC SnoPro 500 - 1.75" Backcountry Track, 9t Super Sprockets, FettBro's RideTech System, J&T 4th Wheel Kit
2005 AC T660 ST Green - (Build in Progress)
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post #5 of 5 Old 04-24-2008, 11:40 AM Thread Starter
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Sled: 1999 ZL 600 EFI
07-08 Mileage: 1000
06-07 Mileage: 100
ATV: n/a
2007 Mileage: n/a
2006 Mileage: n/a
turns out the flywheel came apart on the inside and so it keeps loading up on fuel because it is not sparking everytime like it should
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