Hi,

so i took my atv apart cuz i was about to do an engine rebuild when a freind came over and told me to put it back together and bring it to his house cuz he has a nice big heated garage so i put it all back together now it wont start not evan for a sec just nothing ... i took offf the gas tank muffler and pipe but left the header on i also took off the carb and the boot between the carb and engine.. i put it all back the way i took it apart ... the atv was running the day i took it all down .. and as for carb i dident mess with anything but the idle speed screw so now im stuck again .. lol .
any ideas it has spark i checked and also im like 90 % sure its getting gas wen i loosen the bowl screw fuel comes out any suggestions ? im lost

 

If you were about to do an engine rebuild it may not have anything to do with what you took off.. It may have decided it was time not to run for some strange reason.. I'd proceed with what you planned on doing and just take it one step at a time..

 

it was running fine 1 day ago thats what i dont understand i gotta driive it to buddys house to get to his garage its only getting rebuilt cuz of a leaking head gasket do you have any ideas or tips on how to get it started ? or maby what i might have done wrong putting it back together ? how do i tell for sure if its getting gas ?

 

Pull the line from the fuel pump leading to the carb and crank the engine over. Should be a steady or pulsing stream of fuel if pump is working ok and at least getting fuel to the carb. Plus look at the simple things like a fouled plug,etc. Plus just retrace your steps. Sometimes the answer will hit you between the eyes..

 

hey opt thanks sounds like a good idea
wich line do i pull off the one on the right side of the carb or left ? i have 3 lines 1 for gas tank and 2 goiing into the carb ... and do i pull the line off of the carb or pull it off the fuel pump

 

Pull the lowest line on the carb closest to the clutch.

 

ok so i dident see your msg until right now but i took the air box off
put my hand on the back of the carb to cover it turned the quad over and it started for like 2 seconds barley .... then as i take my hand off it died and wont start at all again ? is there anything you can think of ? air/fuel problem ? also

on my carb the black slide with the needle isent movng up and down when i use the throttle the only thing that moves is the gold plate flaps open and closed could that be somthing ? i dident take apart the carb or anything

 

With the engine off the slide isn't going to move when you give it throttle,only the butterfly valve will. Once started the slide works off engine vacuum and moves according to how much throttle is applied and engine vacuum it receives.

 

oh ok dident know that lol last quad i owned was a 1985 yamaha moto 4 and the carb was totally diffrent ...

anyway i fixed the problem not sure how all i did was take the carb off removed the black boot cleaned the surface put the boot back on and tightend it down the best i could without stripping the allen bolt and put the carb back on tightend that strap as tight as it would go and i put my hand at the back of the carb again and pushed the button and it fired right up guess i dident tighten the boot all the way or somthing lol thanks for the help though much appreciated

to anyone who has a similar issue make sure u tighten things down properly or youll end up like me confused lol...

also was reading online that polaris uses a pulse fuel pump as u said above and that when the lines go dry it creates a vacume lock or somthing like that so maby thats what had happend

 

All the 500 engines have to have the air box and filter on to even crank up and run right. Air leaks around the intake or carb are about the same as pulling the air box. Glad you found the problem. Yes it even affects the pump as engine vacuum drops.