slednutz tech lounge
 

Go Back   SledNutZ > On the Snow... > Arctic Cat > Arctic Cat General Discussion
Ibreakstuff Says: Time to start the snow dance!
Register FAQSled Chat Members List Casino Media Garage Search Today's Posts Mark Forums Read Statistics

SledNutZ Quick Info
Friends of SledNutZ: JohnDee
GreenHulk.net PWC forums
Great Lakes Jeep Thing
Team Belly Pan Sled Forums
PEPPERMILL RENTALS IN THE YOOP! There's no where better to stay in the Rockland/Mass area!
Web hosting by Floogy

OCR - ZR580 EFI troubles

Arctic Cat General Discussion

 
 
Thread Tools Display Modes
  #1  
Old 09-30-2009
Ibreakstuff's Avatar
Ibreakstuff
Asswipe Admin
Ibreakstuff's Info
 
Join Date: Aug 2007
Location: Burbs
Posts: 8,466
Send a message via MSN to Ibreakstuff
Default OCR - ZR580 EFI troubles

Mr. Gleason -

97 ZR580 EFI won't fire. Here's the diagnosis:

First pull, it fires ONE time (I assume MAG side as it's not totally soaked). The red light on the ECU blinks once. When either fuel injector is disconnected, the red light stays on constantly. PTO Cylinder is constantly soaked; whether the injector for that cylinder is plugged in or not. Pulled that injector; tested - meter'd OK and put +12 to it. Solenoid kicks fine, nice and solid. O-rings look good on injector (no leaks). No matter how much you pull that engine, with the injector unplugged, will the PTO cylinder dry out. Engine has 120 in both holes, nice "blue" (I know it's not a perfect way to test) spark constantly, I tested with a plug in the wire and plug in the head, etc with all different combinations. It NEVER loses spark.

What kind of pressure should be coming from that fuel pump? At what PSI will the pressure regulator allow fuel to flow out and back into the tank?
__________________
You don't have to flinch for me to know that you're scared.
Reply With Quote
  #2  
Old 10-01-2009
OCR's Avatar
OCR
Summer Sux!!
OCR's Info
 
Join Date: Sep 2007
Location: Groton NY
Posts: 4,642
Default

36.7psi is the minimum for most regulators.
So, basically any reading over 35psi should work. (variable by quality of pressure gauge)

Dry the cylinder by removing the plug and setting it into the hole with wire attached and "blow off" the excess gas. Put in new plugs and see if it starts.
__________________
Old Cat Rider

'93 Wildcat 700EFI w/ Comet 108 Pro-4 clutch & 01 ZR skid


http://twintiersleddin.proboards76.com/index.cgi


Quote:
we are all given sh*t in life, but some of us learn to turn it into fertilizer and grow from it, and some us try to fling it on others like monkeys
Reply With Quote
  #3  
Old 10-01-2009
Ibreakstuff's Avatar
Ibreakstuff
Asswipe Admin
Ibreakstuff's Info
 
Join Date: Aug 2007
Location: Burbs
Posts: 8,466
Send a message via MSN to Ibreakstuff
Default

Been tried a million times. The cylinder WILL NOT dry out. It's as if the injector is stuck "open".
__________________
You don't have to flinch for me to know that you're scared.
Reply With Quote
  #4  
Old 10-01-2009
OCR's Avatar
OCR
Summer Sux!!
OCR's Info
 
Join Date: Sep 2007
Location: Groton NY
Posts: 4,642
Default

Have you tried switching the injectors?
__________________
Old Cat Rider

'93 Wildcat 700EFI w/ Comet 108 Pro-4 clutch & 01 ZR skid


http://twintiersleddin.proboards76.com/index.cgi


Quote:
we are all given sh*t in life, but some of us learn to turn it into fertilizer and grow from it, and some us try to fling it on others like monkeys
Reply With Quote
  #5  
Old 10-01-2009
Ibreakstuff's Avatar
Ibreakstuff
Asswipe Admin
Ibreakstuff's Info
 
Join Date: Aug 2007
Location: Burbs
Posts: 8,466
Send a message via MSN to Ibreakstuff
Default

No, I didn't.
__________________
You don't have to flinch for me to know that you're scared.
Reply With Quote
  #6  
Old 10-01-2009
OCR's Avatar
OCR
Summer Sux!!
OCR's Info
 
Join Date: Sep 2007
Location: Groton NY
Posts: 4,642
Default

This will tell us if the problem is the injector or if it is elsewhere.
If it follows the injector, the problem is likely a bad injector. If not. the problem is either in the connections. drop resister or the ECU.
__________________
Old Cat Rider

'93 Wildcat 700EFI w/ Comet 108 Pro-4 clutch & 01 ZR skid


http://twintiersleddin.proboards76.com/index.cgi


Quote:
we are all given sh*t in life, but some of us learn to turn it into fertilizer and grow from it, and some us try to fling it on others like monkeys
Reply With Quote
  #7  
Old 10-01-2009
Ibreakstuff's Avatar
Ibreakstuff
Asswipe Admin
Ibreakstuff's Info
 
Join Date: Aug 2007
Location: Burbs
Posts: 8,466
Send a message via MSN to Ibreakstuff
Default

Well, the sled still floods with the injectors unplugged. That's why I'm thinking mechanical failure - bad injector or fuel pressure regulator. But the injector meters OK and it clicks like it's supposed to - so I was thinking bad regulator.
__________________
You don't have to flinch for me to know that you're scared.
Reply With Quote
  #8  
Old 10-01-2009
OCR's Avatar
OCR
Summer Sux!!
OCR's Info
 
Join Date: Sep 2007
Location: Groton NY
Posts: 4,642
Default

Test the fuel pressure then, if it goes over 40psi, then the regulator is not functioning.
Still try switching the injectors, that will tell you if the problem is there or elsewhere.
__________________
Old Cat Rider

'93 Wildcat 700EFI w/ Comet 108 Pro-4 clutch & 01 ZR skid


http://twintiersleddin.proboards76.com/index.cgi


Quote:
we are all given sh*t in life, but some of us learn to turn it into fertilizer and grow from it, and some us try to fling it on others like monkeys
Reply With Quote
  #9  
Old 10-01-2009
Ibreakstuff's Avatar
Ibreakstuff
Asswipe Admin
Ibreakstuff's Info
 
Join Date: Aug 2007
Location: Burbs
Posts: 8,466
Send a message via MSN to Ibreakstuff
Default

Could this really be a feared stator problem? Or does the stator issue cause both sides to flood uncontrollably?
__________________
You don't have to flinch for me to know that you're scared.
Reply With Quote
  #10  
Old 10-01-2009
OCR's Avatar
OCR
Summer Sux!!
OCR's Info
 
Join Date: Sep 2007
Location: Groton NY
Posts: 4,642
Default

It could possibly be that, but still test the individual injectors.
I will have to check to see what the test specs for the stator are though.
__________________
Old Cat Rider

'93 Wildcat 700EFI w/ Comet 108 Pro-4 clutch & 01 ZR skid


http://twintiersleddin.proboards76.com/index.cgi


Quote:
we are all given sh*t in life, but some of us learn to turn it into fertilizer and grow from it, and some us try to fling it on others like monkeys
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 01:41 PM.


Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright 2007 Slednutz.com