Vacuum Fuel Pump Issues with Oversize Piston - Physics Forums
2016年5月24日 · Vacuum Fuel Pump Issues with Oversize Piston. In summary: The small brass tube on the manifold pictured above is where the vacuum line from the fuel pump plugs into. The inlet line is on the total left side. the middle line is the outlet (into the carburetor float bowl) and the line on the total right side is the vacuum line that plugs into the ...
Vacuum mechanical fuel pump - Polaris ATV Forum
2020年3月10日 · Make sure the carb bowl overflow tube on the bottom of the carb isn't plugged up. If it is and the needle valve assembly #10 starts leaking, which is common, then the fuel will back up and flow over into the air box and possibly the engine. To see if the diaphragm in the pump is bad, which will dump fuel directly into the carb's air stream ...
vacuum fuel pumps - Polaris ATV Forum
2015年6月7日 · If the pump was really dirty you may need to clean out the tank too. Another thought, with the age, the vacuum line could need replacement. The vacuum sucks itself closed cutting off the vacuum to the pump. Taking the line off releases the lock, and allows it to pump again. Polaris Hand warmers, Mirrors.
Conversion to Electric Fuel Pump | Polaris ATV Forum
2023年7月2日 · Oldest first. lateburd. 27452 posts · Joined 2014. #2 · Jul 3, 2023. The vacuum is take from the carb, not the engine, but you may install an electric fuel pump as long as it does not exceed 6 psi output pressure. Shop Owner and Mechanic with over 50 years experience.
Classic symptoms of Fuel Pump Failure - Polaris ATV Forum
2017年6月22日 · It would start and run only full throttle, low rpm. It sounded like it was running on both cylinders but popping some backfire sounds. It acted like it was really lean. I don't suspect the spun timing crank gear as it was built in 2010 and the spun gears were mostly 2013.
Sportsman 500 Carb Vacuum - Polaris ATV Forum
2013年2月3日 · Sportsman 500 Carb Vacuum. I have a 2000 sportsman 500. I can't seem to get a pulse from the carb to work the fuel pump. I can blow into the fuel pulse line and get fuel to pump out. Also did a vacuum check on the pump and it looked good. It seems like the carb is not pulsing the pump. I started it up using a squeze ball to pump fuel.
2014 sportsman 400 HO no power to fuel pump - Polaris ATV Forum
2024年2月3日 · lateburd. 27452 posts · Joined 2014. #3 · Feb 3, 2024. You have me confused - the fuel pump is vacuum operated and there is no 'power' to it - the fuel tank has a sending unit for the fuel gauge and that's it - only two wires (one power and one signal wire to the gauge). The 14 400 HO is a carburetted throttle control and not EFI, so what was ...
2009 polaris HO carb fuel pump issue - Polaris ATV Forum
2021年10月25日 · The second method of priming the system is; drain the carb, put about 1/2 gal of fuel in the tank and apply 2 psi of air pressure to the fuel tank - the air pressure will force fuel from the tank into the lines, fuel pump and carb. Once primed, it is good to go until the next time it is run out of fuel or serviced. Shop Owner and Mechanic with ...
2004 500 HO Fuel pump problem - Polaris ATV Forum
2020年6月21日 · 2004 500 HO Fuel pump problem. Got a new carb and now I am not getting fuel out of the new fuel pump. Not 100% sure I have the vacuum line on correct but I am getting great fuel flow to the pump. I was getting flow to the old carb. Any ideas or if diagram I am out to check all the lines are on snug.
Scrambler 500 fuel pump - Polaris ATV Forum
2013年11月2日 · Scrambler 500 fuel pump. Hello. I picked up a scrambler 500 for 600.00. Owned by a farmer. Ran great until it sat for over year. I Did the usual, new plug clean gas. It will not get any fuel to the carb. Gas gets from the tank to the fuelpump and that's it. I even bought another fuel pump used and same thing.