2 stroke carburetor problems

If you are having any difficulties starting or running your chainsaw then this free pr. Lets set the topend first since its the easier of the two.

Carburetor Problems and Solutions.

2 stroke carburetor problems. Carburetor Problems and Solutions. The following is a chart of potential carburetor problems. Priming the Carburetor on a Two Stroke Engine Before you start your engine you need to prime it.

The priming bulb sucks fuel up into the carburetor which may be empty from the last time the engine was run. This is an important step because it fills a small reservoir in the carburetor with fuel which the trimmer draws on during use. If you are having any difficulties starting or running your chainsaw then this free pr.

The engine starts because it can burn the fuel you just sprayed directly into the carburetor and it dies when that fuel burns off. This means that carburetor is not properly delivering fuel to the engine. You can fix this problem by cleaning your carburetor or if it is especially dirty or worn rebuilding your carburetor.

Remove line at carb. And check for fuel flow. Clean filter on tank valve.

Make sure gas is not over rich with too much 2 cycle oil. 16 to 1 ratio with a brand new engine and 25 to 1 with a used engine. If Old gas replace with fresh gasoil mix.

If no start go to step 9 9. Go to step 2. Many 2-cycle engines have problems and are sent to the junk yard before their time.

Typical problems include hard starting rough running a need to adjust the carburetor during use to keep the engine from stalling a need to rev the engine to keep it from dying and not starting at all. I will assume the user knows to replace the spark plug regularly to use fresh fuel and to replace or clean the air filter. 2 Stroke Engine Troubleshooting - Spark But No Fuel.

As you read above this is assuming you have checked the basics you know gas is on gas in the tank choke is on. One quick check you can do is to pull the fuel line off your carburetor turn the gas on for a second and see if fuel is flowing out the fuel line. Typical symptoms of a lean mixture are.

Backfiring as the throttle is closed primarily during coast-downs Lurching acceleration. White or light gray spark plugs. Requiring excessive amounts of choke to runstart.

White or light gray muffler end pipes. Bluing on chrome systems of the exhaust header down-pipes. Hard hot starting is a problem that usually makes us think that the carburetor needs to be replaced however the real issue is that too much heat starts accumulating in the carburetor fuel pump lines and its vicinity.

It makes the fuel boil creating a vapor lock. This condition makes it harder for a hot engine to start. So I had a weed eater that needed a carb rebuild and I figured this was a perfect opportunity to do a vid on how these work.

If engine is cold ensure that the choke lever is up. If engine is hot ensure that the choke lever is down. Possibly flooded engine Excess fuel inside engine.

This can occur if fuel valve is left open while engine is off for long periodTurn fuel to off position and try starting engine with throttle wide open. Typical carburetor related problems include. Tank - Outlet hole inside the tank blocks with grit stopping or slowing fuel flowing to the carburetor Cap - Cap allows the tank to breath when the cap vent fails it seals the tank stopping fuel flow Lines - Leak at connection points and on occasion can block stopping fuel flow.

Two-Stroke Motorcycle Troubleshooting Guide Engine Doesnt Start. Poor Running at Low Speed. Poor Running at High Speed.

Spark plug fouled broken or misgapped. Clutch Not Working Properly. On some 2-stroke carburetors there is a small priming bulb that allows you to create a vacuum much like the engine would to pull fuel into the carburetor.

When these collapse or crack they dont function properly and must be replaced. They are not all the same size so you need to get one specifically for your carburetor. First screw in both lowend highend needles all the way then unscrew to about 1 34 to 2 turns out each.

Choke or prime the motor until the carb is wet. Start the engine and let it warm up. Lets set the topend first since its the easier of the two.

Go to full throttle. Adjust the topend needle for peak RPM. The Disadvantages of 2-Stroke Jet Skis Reliability and Maintenance.

Its a well-known fact among PWC enthusiasts that 2-stroke jet skis are less reliable than. When it comes to the 2-stroke jet skis reliability its a proven fact that their engines are less durable. Lack of Parts.

Needle and see inside the carb is either stuck closed or open. When its stuck closed it will cause no fuel. When stuck open there will be flooding.

Its best to refer to the repair manual carburetor assembly section. Refer to the carb adjustment section in the downloadable repair manual for fix. A rich two stroke will often stutter or fell blubbery before taking off it could smoke more than normal depending on your fuel mixture or load up at low RPM.

The RPM returning to idle when you close the throttle quickly will often sound choppy dropping down then hitting high before dropping back down.