hay fastcat. I have had problems with my 800efi this year.
at about 650miles the sled started to loose power. would not pull full rpm and only run about 95 mph. I was worried about the engine on the ride home. felt like it was starving on fuel.
I didnot fill the sled with fuel. I got a coat hanger and hooked the rear filter/screen from the fuel tank and brought it out the
fill hole in the tank. Found the rear screen plugged with a very sticky brown coating. I remove the screen and poored gas into the screen. The screen was so plugged that the gas would not run through it. I cleaned the screen with honda carb cleaner and it came back nice and white. Reinstalled the filter and went for another ride next weekend for about 80 miles. Rechecked it again and found it starting to plug again.
I removed the seat and fuel tank assy. Remove the complete fuel pump and found the front filter plugged also. *Cleaned the fuel screens, drained and washed out the complete inside of tank. There was alot of brown sticky balls like oil or tar in the tank. This was causeing the fuel filters in the tank to plug.
reassemble the sled and went for 4 days of riding. put about 350 miles on sled. Rechecked when got home filter are as white as when i cleaned them before the trip. I talked to cat factory rep at the cat show last week. He gave me the run around
. first time he has heard of this problem. What a lyer. To make a *long story short. The answer he gave me after at least 15 minutes of harping at him. Was that the brown goo should wash out of the screen/filter after several miles. I may be from the 1st tank of oil/fuel mixture. He said that you have to make sure you only run one tank fuel and that you mix it to the correct 100 to 1. and no more. I know of some guy that ran two tanks through there sleds. I check 2 other efi sled after and both had partly plugged filters. I think the problem with yours is that thay replaced the pump and didnot clean the filters as the pump is seperate from the hoses and filters.
What did the cat guys say at the show you had in regina last thrusday?