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96 Arctic Cat ext 580 EFI fuel delivery problem

2K views 1 reply 2 participants last post by  KCCats2 
#1 ·
Hello all,

I am used to working on classic fuel pump fed carbed machines, so this is a bit new for me. I am wondering where to start to diagnose the fuel delivery issue on this sled. It fires up for a bit with starting fluid, so good spark. I took the carbs out and cleaned what I could. I've uploaded a video with the sound the EFI is making (not sure if it is a normal sound or not). Owner said it ran good last year. and He has started it this year but it smoked like crazy. I already fixed that - the oil injector was stuck all the way open. That part operates as it should now. Any thoughts? Thank you!

Video: https://youtu.be/SUYIES7EC5I
 
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