What should I do if my carburetor is not fixed?
Some carburetors are fixed, meaning they have no adjustments. Clean out the carburetor with carburetor cleaner. They can become gummed up easily in 2-stroke engines.
How to repair your trimmer when the engine will idle but?
Locate the adjustment screws. To adjust the carburetor, start with both screws backed out 2 turns from the closed position. One should be idle mix and the other should be high speed. Start the engine and let it warm up for 5 minutes. You may have to keep the throttle open a bit. Slowly turn in…
What causes engine to stall when giving gas?
Those screws with the spring are the idle fuel mixture screws. The engine service manual should provide an initial number of turns that they should be backed out. The problem is fuel delivery at WOT, not at idle. Something is preventing the carb bowls from maintaining an adequate fuel level to allow the high speed jets to pick up the fuel.
What causes a carburetor to go off in a trimmer?
A damaged gasket below a carburetor will pull excess air into the engine, causing the air/fuel mixture to be off and result in a loss in power. To check this, start by removing the air filter then loosen carburetor bolts. Disconnect the fuel line and remove any linkages depending on your clearance to remove the gasket.
What should I do if my carburetor is stalling?
Then, back off on your idle set screw to lower your idle while continuing to spray into the carburetor. Keep backing off the screw until it is no longer contacting the throttle linkage. By doing this, you are taking away air and your car should stall, or at least idle down very low to 600 RPM or lower.
What causes idle to be high on a carburetor test?
So it is best to do this test before the engine is warmed up. The other possible causes of the idle remaining high would be a worn out throttle butterfly, or a throttle shaft that needs a bushing, or, if it’s a four barrel, sticking secondary butterflies.
How to tell if your carburetor is too rich or too lean?
If not, is the carburetor too rich, or too lean? To determine this, introduce an additional fuel source (like carburetor cleaner spray) by spraying into the throat of the carburetor with the engine idling. If the idle smoothes out and gains RPM, you have a lean condition. If no improvement, or it gets worse, it is rich.
What should gas squirt look like on two barrel carburetor?
On a two or four barrel carburetor you should see 2 streams of gas squirting in with the movement of the throttle. If there is no squirt or if the squirt is weak, then the carburetor needs to be rebuilt. If the squirt looks good, the next thing you are going to do is check for off idle or main circuit leanness.