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1998 Powder Special Oil Pump

2K views 6 replies 3 participants last post by  RJ Gleason 
#1 ·
I Have a 1998 Powder Special 600 EFI,currently oil injected. Two other people that we ride with have the same sled. All of them use different amounts of oil. I also have a Thundercat and I mix the gas for that. It seems to me that Mixing the gas isn't a big issue at all, and I am wondering about taking the oil pump off of the powder special... I just don't know how much I trust it knowing that all three of them use different amounts of oil. How tough is it... and is it a good idea?
 
#3 ·
The bad thing is that the one that uses the least amount of fuel uses the most oil??? same sled...major differences. IT doesn't seem that an EFI machine should be that different from one another. They are very different... we are talking one uses about 4 times as much fuel as the other.
 
#4 ·
Four times as much fuel or oil?
If it is using a lot of oil, there are three fixes.
1. The seal for the pump shaft is in need of replacing.
2. The pump itself is leaking and needs replacing.
3. The actuator arm is not returning the idle position. (check that the cable is not frayed and sticking)
The Cat pumps are not rebuildable.
 
#5 ·
I am Sorry that was a TYPO. What I meant to say is that the one that uses the least amount of fuel uses the most OIL... and that means that it is really using an oil mixture that is 4 times greater oil/gas than the others. I also understand that it can be checked to see if it is running to lean or not. I Mix the fuel on my 99 thundercat and just figure it would be just as easy to mix the fuel on the powder special. I am just worried about the EFI... would it affect that?
 
#7 ·
kccats said:
No You can premix an EFI, but I would just fix the problem! I would also fix the T Cat!
Service manual says NO to mixing on an EFI.
Two reasons, first, the oil will clog the screens in the smart valves (ultra fine mesh) and second, it will also clog the injectors.
If you need to have extra oil for a break in period, it says to wire the oil pump lever open for the first tank of gas.
 
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