milky stuff on top of carbs.

[jhinkley90]

ok i have a 1996 polaris sl 900 triple jet ski. it has perfect compression all the way across. this thing runs great for about an hour and than the top of the carburetors fill with white milky stuff... the filter setup i have is just three k&n air filters with sleeves on them. i have replace all of my intake gaskets all my head gaskets are brand new. just the milky stuff would my air filter setup cause this. This is a aftermarket air filter system the original system is a sealed box. can someone help me please

 

[bently]

Re: milky stuff on top of carbs.

I have not worked on a ski with pods, but I would think it would be water in the gas maybe?

 

[The Penguin]

Re: milky stuff on top of carbs.

sounds like water mixed with gas.

so either you have water in your gas, or you have water entering the engine compartment and splashing up onto your carbs.

possible solutions:

check your fuel/water separator if you have one
use a set of "outerwears" on your K&N filters
look for leaks
make sure you have a coupler cover installed over the engine/pump coupler

 

[kend301]

Re: milky stuff on top of carbs.

First things first , get a glass jar and take a fuel sample , take the feed line off the carbs and pump some fuel into the jar . let it sit for 1/2 hr and look at it , water will be bubble looking at the bottom of the jar . Your filters would have to be so soaked with oil to make the "milk " I doubt it is it but never a bad idea to service them according to the manual . When you do look inside the filters , if you have water there you are picking up water in the air intake system . Start there and post results .

 

[jhinkley90]

Re: milky stuff on top of carbs.

ok thank you guys my air intake was my problem i got it straightened around. i also have another question. on my polaris sl 900 would the jet drive off of a sl 780 work on my sl 900 the pictures look identical to my setup. i dont wanna spend 500 dollars to get mine rebuilt if i dont need to thank you. the sk 780 is the same year as my sl 900

 

[bently]

Re: milky stuff on top of carbs.

An easy way to see which parts are interchangable, look the part numbers up on the exploded view for each ski, if the numbers are the same then you can swap the parts, I believe you can for those skis, Polaris made a good change to the pump housings after the '92 or '93 year ski's.