Running too rich, timing off. Search your engine and "backfire"
Please restate the question including more details about your symptoms.
Strip the carburettor down, soak the parts in carburettor cleaner, blow out all orifaces with filtered compressed air.
Fuel filter. Also use compressed air to blow out the fuel line to the fuel rail if FI equipped. If carburetor take the fuel line off at the carburetor before attempting to blow out the line.
Follow the intake air plenum from the air filter. It connects to the carburetor. The carburetor is mounted on the intake manifold.
It means to "go down" on the carb. Just put you lips on the carb "and blow"!
unhook it from both ends and blow air through it Disconnect the line at the carburetor. REMOVE THE FUEL FILTER. Blow air through this portion of the line. If possible, remove the line at the fuel tank and plug the outlet in the tank. Now blow out the line between the filter and the tank.
A Polaris Sportsman 500 may backfire and blow off the carburetor due to several issues, including a lean fuel mixture, improper ignition timing, or a malfunctioning carburetor. This can lead to excessive pressure in the intake system, causing the carburetor to become dislodged. Additionally, worn or damaged gaskets and seals can exacerbate the problem by allowing air leaks. Regular maintenance and tuning can help prevent these issues.
it either needs new rings on pistios or one piston is cracked causing blow by or ... blow by is when compression escapes your piston..
Surging is the result of a "lean" fuel mixture, meaning too much air and not enough fuel. The problem is most likely a dirty carburetor or an air leak in the intake system. To fix, inspect the carburetor and intake manifold for cracks or looseness. Tighten all fasteners to ensure all seams are airtight. Clean out the carburetor with some carb spray and blow out all holes/orifices with compressed air. If problem persists, carburetor must be removed and disassembled/rebuilt.
probably a head gasket.
why does ac blow warm air? why does ac blow warm air?
No. The choke reduces the amount of air being mixed in the carburetor. You will simply run very rich and run the risk of fouling spark plugs.