Vacuum Fuel Pump Issues with Oversize Piston - Physics Forums
2016年5月24日 · Some signs of a malfunctioning vacuum fuel pump include difficulty starting the engine, engine stalling, and loss of power while driving. You may also hear a clicking or whining noise coming from the pump. What are the common causes of vacuum fuel pump problems? The most common cause of vacuum fuel pump problems is a clogged or dirty fuel filter.
Classic symptoms of Fuel Pump Failure - Polaris ATV Forum
2017年6月22日 · These pumps an oddity. My polaris pump would quit when hot and run fine when cold. Took it to the dealer under warranty and always read 58 psi. I installed a quantum and rode it for 6000 miles with that pump. One day it just died and would not start. Pump seized to a stop. If you can test it while it is happening is best. www.highflowfuel.com
vacuum fuel pumps - Polaris ATV Forum
2015年6月7日 · I replaced the little white fuel filter with a clear one and noticed after it runs and dies after about 20 minutes, the filter is empty. If I pull the line to the carb off, vacuum is restored. I plug the line back in and it'll run fine for another 20 minutes or so. The vacuum line seems to be delivering plenty of vacuum to the pump.
Engin runs but dies with throttle. - Polaris ATV Forum
2018年7月23日 · Only going by my experience with the 325 machines and my 600. If you have a carb, then there should be a vacuum fuel pump under the left front fender. In my experience the vacuum line that operates the pump goes to the nipple on the right front of the carb. There is one for the fuel inlet and the two at the rear are both vents.
Sportsman 500 Carb Vacuum - Polaris ATV Forum
2013年2月3日 · 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. I put a vacuum gage on the carb but ...
2004 500 HO Fuel pump problem - Polaris ATV Forum
2020年6月21日 · The crankcase has a vent line with a filter that goes to the air box - it is a relatively large hose - the fuel pump has 3 lines all about the same size - the vacuum line comes from the RH side of the carb close to the carb holder - the fuel line from the fuel pump goes to a nipple on the LH side of the carb close to the air inlet
Conversion to Electric Fuel Pump | Polaris ATV Forum
2023年7月2日 · 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 Reactions: Grego Garcia
2014 sportsman 400 HO no power to fuel pump - Polaris ATV Forum
2024年2月3日 · If the fuel pump is new, it needs to be primed by exhaling into the fuel tank to pressurize the tank - with the tank full, fuel will flow through the pump 24/7 - the pump is only needed when the tank gets low on fuel (half tank is low) and with a partial tank of fuel on steep (over 30 degrees) hills.
98 425 magnum fuel pump diagram - Polaris ATV Forum
2010年2月25日 · Fuel does not 'spray' through the jets - fuel is drawn up through the jets by the vacuum created in the venturi when the valve opens and the piston travels downward - fuel is pumped from the tank to the carb float bowl (fuel reservior) - yes, if you take the carb off and tip it, fuel will flow through the jets and vents by gravity just emptying ...
Does the fuel pump actually "pump"? - Polaris ATV Forum
2011年4月22日 · The pump itself may have gunk in it too. In other words, I'd clean the entire fuel delivery system and check for collapsed or kinked hoses and for pin holes in the diaphragm while doing it. Also make sure the vacuum line and intake boot that works the pump is sealed tight.