epwhitehair

I am posting this question for my son.... who got caught in school yesterday trying to post this forum question - he must have panicked last minute and not sent it. So he says.... Ha!

Although he managed to squeeze 3 miles in on his newly rebuilt polaris indi EFI 500 (1993?) last season before the snow melted we are not sure why it won't start now. I can't believe we finally got it back together!

If we put a medicine dropper of gas down the fuel tube (after the fuel rail) the motor fires fine and runs out the fuel as expected. So we don't think fuel is getting to the rail. We can hear the fuel pump cycle on and off but how can we trouble shoot the problem? If the fuel tubes are disconnected before and after the rail shouldn't one side pump fuel when the pump is on? Any ideas?

My son spent LOTS of time with me last winter in the shop working on this sled with tons of forum input. We could never have done this without the help and we had a blast. He is now hoping we can get over this last hurdle. We put the sled away in running condition. The battery is fully charged up.

Thanks in advance! Again!

Ebbens dad

...by the way.. he is 14 now.

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Grudman

Pump might be cycling but have you check for fuel pressure?

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1997 Arctic Cat 580 Efi Deluxe

Grudman

mrholmquist

it is common on this model for the suction fuel line to go soft and fall off the brass barb inside the fuel tank . The result will be pump running as normal but since it is sucking nothing but air (the brass barb is located near the top of the fuel tank) there will be no fuel pressure and of course no start. Remove the fuel cap and fish the hose out of the tank with a piece of coat hanger ....bet it is in bad shape. All in all an easy fix.

POL3INAROW

As MrHolmquist has mentioned, check all your supply lines. With todays ehtanol fuels it is possible that one has deteriorated, or swollen and fell off the brass barb, as well as the nipple in the tank. You can shine a light in the filler neck and see the back side of the nipple, or remove the nipple from the tank and ck that way.

epwhitehair

thanks to MrHolmquist (again!), we have fixed the problem. indeed the fuel line had fallen off of the barb in the tank. we took the barb out, replaced the line, weighted the end, and fired it right up! it runs well. thanks again everyone!

ebben

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mrholmquist

you are quite welcome ....Ebben

epwhitehair

i just wanted to let everyone know that all has been well this year - i've put 55 miles on going through our woods, and my neighbor's woods and fields!

i'll try and put up a movie at some point soon.

thanks again!
ebben

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