Why does my weed eater die at full throttle?
The reason your weed eater dies at full throttle is because of insufficient air intake due to be being clogged up, low quality fuel issues, and a clogged up carburetor. Damage to the primer bulb and a clogged fuel filter are other possible causes for a weed eater to die at full throttle. This usually indicates that the engine struggles to get sufficient fuel or air at full throttle.
Fuel issues
Insufficient fuel and using low-quality gas can contribute to this problem. Something as simple as not having enough gas in your tank could cause your weed eater’s problem.
The quality of gasoline sold in the U.S. is graded based on the octane number. This number could range from 87 for regular gas to 91-94 for premium. An octane rating measures the gas’s ability to withstand compression in the engine before detonating.
Using a lesser quality fuel than is recommended could cause your weed eater to die at full throttle.
Primer bulb damage
The primer bulb is a small rubber “bulb” between your gas tank and the engine. It helps prime the engine when it is started cold. It also helps fill the carburetor with the appropriate amount of gas.
For this mechanism to work, the rubber must be elastic to create suction. However, over time, this rubber becomes stiff. It can even go as far as becoming brittle and cracking.
This damage could cause fuel to leak from the bulb and cause your weed eater to die at full throttle.
A clogged fuel filter
A fuel filter is designed to screen out dirt and other tiny particles from the gas before it reaches the engine.
This filter could get clogged up if you have been using low-quality gas. There might still be enough space for a small amount of gas when starting and idling but revving up the engine shuts it down.
Insufficient air intake
Your engine needs air for combustion to take place. So engineers put the air filter in place to prevent insects, dust, sand, and other particles from reaching the engine while trying to get air.
After repeated use, the air filter could get clogged up. This blockage will lead to starving the engine of air, especially while revving the engine. This could lead to your weed eater dying while giving it more gas.
Carburetor problems
A clogged-out carburetor or one that needs adjustable can cause your weed eater to die on full throttle. The impurities could be introduced from the fuel or the air.
Also, speed adjustment screws on your carburetor regulate the fuel while idle and at full throttle. A wrong adjustment could be responsible for your weed eater dying at full throttle. Adjusting these screws will fix this problem.
How to fix a weed eater that dies at full throttle?
To fix a weed eater that dies at full throttle, you can change the fuel and air filter, replace the primer bulb, clean the carburetor, etc.
Use quality gasoline
The solution to your weed eater dying at full throttle could be as easy as that.
- Read the user manual to find the recommended gas for your weed eater’s engine.
- Ensure there is enough gas in your fuel tank before you embark on the rest of this troubleshooting.
- Do not leave unused fuel in your fuel tank over a long period. Old fuel could contain dredges of impurities that will clog up your engine.
Fix primer bulb damage
This small rubber bulb could be responsible for your weed eater dying at full throttle. Follow this guide to check and fix this:
- Locate the primer bulb on top of the carburetor of your weed eater’s engine.
- Press the bulb downward with your thumb. It should depress and quickly recoil back into shape. It is time to change if it is stiff, brittle, or cracking.
- Buy a pack of replacement primer bulbs from Amazon; they cost around $5. A part number on your carburetor will guide you on which to buy.
- Place your weed eater’s engine on cardboard to absorb any excess gas that might spill.
- Remove the two screws that secure the plate holding the primer bulb in place.
- Gently pull the primer bulb until it comes off together with the plate.
- Remove the old prime bulb from the plate and insert the new one.
- Reinstall the whole plate together with the new bulb on the carburetor
- Secure the plate with the two screws you removed earlier.
How to fix a clogged fuel filter
If your weed eater’s engine is being starved of fuel, it will die when you rev it up at full throttle. Follow this step-by-step guide to fix this:
- Drain your fuel out of the gas tank into a container.
- Remove the fuel cap and set it aside.
- Bring out the fuel line from the gas tank using a hook or long wire. The fuel filter should be present on the tip of this line.
- Remove the fuel filter from the hose.
- Immerse the filter in a strong solvent like lacquer thinner. This will dissolve the impurities clogging it.
- Alternatively, you can replace the fuel filter. It is readily available on Amazon and costs around $9 for a pack of 5.
- Insert the new fuel filter to the end of the fuel line.
- Push the fuel line back into the tank.
- Fill it up with gas and replace the fuel tank cap.
How to replace the air filter on a weed eater
Air filters should be checked regularly and replaced at least once a year. Follow this guide to replace your air filter easily:
- First, remove the air filter cover by turning the knob on the end of the cover.
- Assess the air filter for any tear or clogging
- Remove the old filter and install the new one. Air filters are available on Amazon for around $10 for a pack of 5.
- Strap the air filter cover back onto your trimmer and secure it tightly.
How to fix carburetor problems
Fixing a carburetor problem could range from simply adjusting the carburetor to cleaning or flat-out rebuilding it.
To adjust or tune the carburetor:
- Locate the adjustment screws on the top of your carburetor. They should be labeled “Hi” and “Lo”.
- Use a small Philip screwdriver to tighten these screws. Some models require using a carburetor adjustment screwdriver. You can improvise this by using the tip of the case of a Bic pen.
- Turn the screws about 1 turn counterclockwise.
- Turn on the engine, and slightly turn the “Lo” screw counterclockwise until the engine sounds evens out.
- Then rev up the throttle. If the engine sputters or dies, turn the “Hi” screw clockwise until it evens out.
To clean out the carburetor:
- Remove the breather and air filter from the side of the carburetor.
- Unscrew and set aside the two screws holding the carburetor and choke mechanism.
- Disconnect the fuel lines from the carburetor.
- Remove the carburetor and set it on a clean surface.
- Unscrew and set aside the screw(s) on top of the carburetor.
- Set aside the jets of the carburetor that contains the gasket.
- Use an air compressor to blow off the debris inside of the screen of the carburetor.
- Replace the top of the carburetor and reconnect the fuel lines.
- Screw the carburetor back into place and replace the breather.
If the above guidelines do not work for you, you may need to rebuild your carburetor. You can find a rebuild kit on Amazon. They cost around $20.
Why does my STIHL weed eater die at full throttle?
The commonest reasons your STIHL weed eater dies at full throttle are fuel or air starvation, damaged primer bulb, or clogged carburetor. Follow these steps to fix this.
- Replace the air filter if it is clogged.
- Change the fuel filter.
- Replace the primer bulb if it is damaged.
- Clean out the carburetor.
- Follow the detailed guides above on how to go about each of these steps.
Why does my Husqvarna weed eater die at full throttle?
The primary cause of a Husqvarna weed eater dying at full throttle is fuel or air starvation. However, wrong fuel quality or a damaged primer bulb, fuel line, or carburetor could also cause this problem. Follow these guidelines to fix it:
- Ensure you use the recommended quality of gas for your weed eater. Check this on the user guide.
- Replace the air and fuel filter. Replacement filters are available on Amazon. Follow the guidelines highlighted above.
- Change the primer bulb if it is damaged.
- Clean out the carburetor or change the whole kit if required.
Why does my Ryhobi weed eater die at full throttle?
Your Ryhobi weed eater may die at full throttle because of fuel or air starvation. A damaged primer bulb, fuel line, or carburetor could also be responsible. Follow these steps to fix it:
- Replace the air and fuel filter. Replacement filters are available on Amazon. Follow the guidelines highlighted above.
- Change the primer bulb if it is damaged.
- Clean out the carburetor or change the whole kit if need be.
Why does my Echo weed eater die at full throttle?
The reason why your Echo weed eater dies at full throttle is because of air or fuel starvation, a damaged primer bulb, or damaged carburetor. To fix this, follow these steps.
- Replace the air and fuel filter. Replacement filters are available on Amazon. Follow the guidelines highlighted above.
- Change the primer bulb if it is damaged.
- Clean out the carburetor or change the whole kit if need be.
Why does my Craftsman trimmer die when I give it gas?
A clogged carburetor is the primary cause of a Craftsman trimmer dying at full throttle. However, air and fuel starvation could also cause this problem.
- Before you set out to take on the carburetor, replace the air and fuel filter.
- Change the primer bulb or anything along the fuel line that is damaged.
- Clean the carburetor paying special attention to the jets and screen. Follow the steps highlighted above.
- Rebuild the carburetor using the Craftsman carburetor rebuild kit.
Why does my Echo trimmer die when I give it gas?
The major reasons your Echo weed eater dies at full throttle are air or fuel starvation, damaged primer bulb, or damaged carburetor. To fix this, follow these steps.
- Replace the air and fuel filter. Replacement filters are available on Amazon. Follow the guidelines highlighted above.
- Change the primer bulb if it is damaged.
- Clean out the carburetor or change the whole kit if need be.
Why does my Ryobi trimmer die when I give it gas?
Your Ryhobi trimmer may die at full throttle because of fuel or air starvation. A damaged primer bulb, fuel line, or carburetor could also be responsible. Follow these steps to fix it:
- Replace the air and fuel filter. Replacement filters are available on Amazon. Follow the guidelines highlighted above.
- Change the primer bulb if it is damaged.
- Clean out the carburetor or change the whole kit if need be.
Why does my STIHL trimmer die when I give it gas?
The commonest reasons your STIHL trimmer dies at full throttle are fuel or air starvation, damaged primer bulb, or clogged carburetor. Follow these steps to have thfixed.
- Replace the air filter if it is clogged.
- Replace the fuel filter.
- Replace the primer bulb if it is damaged.
- Clean out the carburetor.
- Follow the detailed guides above on how to go about each of these steps.
How to fix a weed eater that will not rev up?
To fix a weed eater that will not rev up, you can change the fuel and air filter, replace the primer bulb or clean the carburetor. The major causes are fuel or air starvation, damaged primer bulb, or clogged carburetor.
Follow the step-by-step guidelines highlighted above to fix this.
