QuestionHello, I have a 1992 polaris indy classic long track, which i just rebuilt last winter (for the first time ever)and since then she has run perfect. She ran good all last winter but this winter we went to start it up and it wouldnt work.. I put it away with only 1/4 tank of gas, now thinking there must be water in the gas, i changed it and cleaned the carbs out! It will start but wont keep runing and keeps wanting to bog.. even after all that cleaning it still wouldnt fire in the one cylinder, yet we have spark! I cant seem to figure it out? I am thikning that maybe the jet was plugged and it wasnt getting any fuel into the piston and she might have run dry or something i honestly im not too sure. Please if u have any information let me know becuase i would like to know where to get started so i can get fixen it cuase we got tons of snow down here... thanks alot and hopefully you wil be able to assist me in my proble.
thanks, Kristie
AnswerHello Kristie,
Unfortunately I've seen a quite a few engines take a trip down the rebuild road, because of a clogged jet. What happens is the jet clogs, so the engine runs on one cylinder, the cylinder that has a clean jet. In the mean time, the cylinder with a clogged jet gets no fuel and burns up from the lean mixture. Of course, the engine could be fine, too. Here is where to start. Remove the spark plugs, and turn the key switch off. Then, put your thumb on the plug hole, and have a helper sharply crank the engine over. If you can hold your thumb on the hole, because of the blast of compression, then there is no problem with the pistons. Be sure to do this to each cylinder. If they all test fine, put a fresh set of plugs in, and try to get it to run for awhile. Keep in mind that when a sled has sat for a while, they will eat a few plugs. After the sled has ran, remove the plugs and take a look at them. If they are very wet or turning black, then you are getting too much fuel. If this is the case, which it sounds like it, I would install new jets, and carb kits in each carb, another set of plugs, and then you should be good to go. Keep in mind that the inlet needle in the carb is the number one culprit for a sled not starting, flooding, or not getting fuel the first time it is started after summer. As a last resort, you may want to take a look at the fuel filter, or just go ahead and replace it if it is old. The fuel pump is something to check too, if you are not getting any fuel. The pumps are very simple and reliable on carbureted sleds, but they do fail. The first thing to check is that the impulse lines that go from the engine to the pump are not disconnected or cracked. Other than that, you would either need to install a rebuild kit or new pump. Dennis Kirk's the guys to go through for any parts, they have pretty much anything for that machine: http://www.denniskirk.com/jsp/product_catalog/mmy.jsp;jsessionid=PTD2BHNQ3EC3PLA... . Hope this helps you. Good luck with the Polaris, let me know if I you need any help! --Arcticatman
