Why your Yamaha Golf Cart Has No Power / Losing Power

Yamaha golf cart has no power


Why does my Yamaha golf cart have no power?

Your Yamaha golf cart may have no power due to a problematic fuel filter, a cracked rubber boot, dirt/debris accumulation, or improper combustion. If you have an electric golf cart, faulty batteries or wrong battery connections may also cause the problem.

  • Problematic fuel filter
  • Cracked rubber boot
  • Dirt/debris accumulation
  • Improper combustion
  • Faulty batteries/battery connection


Problematic fuel filter

Check if the fuel filter of your golf cart is damaged and do a replacement if necessary. This filter is usually located in the fuel tank of the cart. If it’s not damaged, this is a good chance to get it cleaned.


Cracked rubber boot

Inspect the rubber boot that connects the engine to the carburetor. The hose clamps on the boot may have got overly tightened resulting in the rubber getting cut. This results in the entry of too much air and less power. Check the inside and outside of the boot thoroughly and get a new one fitted if there are signs of wear and tear.


Dirt/debris accumulation

Look out for dirt or debris accumulated in various areas such as the diaphragm, fuel passages, carburetor and its jets, and fuel tanks. If found dirty, clean the area thoroughly. Take this opportunity to check if there is water in the fuel tank. If so, get it drained and refill it with fresh fuel and oil mix.


It’s worth inspecting the condition of the fuel lines to check if they have started showing signs of degradation. Get them changed with new ones if needed.


Improper combustion

Check the cylinder to see if compression is taking place as desired and note the timing. If it is not working as desired, you may have to change the cylinder.


Faulty batteries/battery connection

This is something to look into if you have an electric cart. Check if the batteries are getting fully charged faster than they should actually be and if they’re losing voltage equally fast. This means that you have one or more faulty batteries that have to be changed.


A load test can help you identify such batteries. Also, check the specific gravities of the batteries to ensure that if they are in the normal range.


Do a check on the water and electrolyte levels of the batteries. Fill the water to the desired level if the water level is low. Check the battery wiring or cable connection.


If the wires are hooked up incorrectly, damaged or loose, take the necessary action. Damaged wires have to be changed while the other two problems can be set right with the existing wires.


Why is my Yamaha golf cart losing power?

Your electric Yamaha golf cart is likely to be losing power due to a battery or installation-related problems. The battery could be loose, corroded, frayed connections, not retaining charge or have a low water level.

Sometimes, the charger may not be plugged in correctly. A combination of these may also be the reason why the Yamaha golf cart is losing power.

On your gas Yamaha golf cart, the power problem may be because of a dirty or dusty fuel system or a carburetor that is out of adjustment.

  • Loose, corroded, or frayed battery connections
  • Battery not charging
  • Low water levels
  • Improperly plugged charger
  • Dirty or dusty fuel pump, fuel tank and/or fuel lines, or filters
  • Carburetor out of adjustment


Loose or corroded battery connections

Inspect all the battery connections. If there are loose connections, tighten them. However, make sure that they are not overly tight. Replace corroded or frayed connections with new ones.


Battery not charging

Check each battery to see if it’s getting charged properly. Also, make sure that the batteries can retain charge for sufficient time. Change the batteries that are not able to do so.


Low water levels

Inspect the water level in each battery and ensure that it is at the required level. Do a topping up if needed for those batteries that have water below the desired levels.


Improperly plugged charger

Check if the battery charger is plugged in properly while charging. If necessary, remove and plug it in again. This is also a good time to check if the charger is faulty and do a replacement if needed.


Dirty or dusty fuel pump, fuel tank or fuel lines, or filters

Look out for dirty or dusty fuel pump, tank lines, or filters and clean the dirty or dusty part. It’s a good idea to clean all of them.


Carburetor out of adjustment

Inspect the carburetor to see if it’s properly seated and in place. If it has moved out of position or is out of adjustment, take the necessary action to seat it in its place or adjust it.


Yamaha G1 golf cart has no power

Your Yamaha G1 golf cart may have no power because of cracked seals, a plugged muffler, a fouled spark plug, or low compression. A malfunctioning clutch, an improperly adjusted carburetor, or a worn-out drive belt can also cause this problem.

  1. Check if the seals are intact and without damage. Replace the cracked seals even if the damage is not much.
  2. Look out for one or more plugged mufflers and get them cleared. Often, mufflers need a bit of barbecuing to get the clog off them. You can use this chance to clean the exhaust outlet as well.
  3. Inspect the spark plug (or plugs) to check if it’s black or covered with soot. This is usually a sign that there is an ignition problem and the spark plug is due for a change.
  4. Do a compression test on the golf cart using a compression tester. Low compression can also cause the golf cart to run out of power. Also, check the fuel pressure and ensure that it’s as desired.
  5. Check the clutch to see if it’s functioning properly. It should shift out when the cart is on jacks. If this isn’t happening, changing the clutch will address the issue.
  6. Watch out for a drive belt that is worn-out. This belt must have a width of 1-3/16 inches and not be worn out by more than an inch.
  7. Check the exhaust valve and linkage. Ensure that the valve is opening and closing properly and that the linkage is hooked in place.


Why Yamaha G9 has no power

Your Yamaha G9 golf cart might have no power because of a clutch problem, a dirty carburetor, or low engine compression. The throttle not opening properly or improperly seated air filter box lid can also be a reason for the golf cart to have no power.

  1. Check for a worn-out or dirty clutch. A faulty clutch must be replaced while a dirty clutch can be cleaned to function properly.
  2. Inspect the drive belt to see that it’s not worn-out. Replace a damaged belt and use this chance to clean it if it’s in good condition but dirty.
  3. Do an engine compression test and ensure that the compression is 175psi. If not, take the necessary action to make sure that you get this compression.
  4. Inspect the tension cable below the generator pulley and ensure that it is not overly tight or loose.
  5. Check the fuel filter, spark plug, and air filter for signs of wearing out and dirt accumulation. If they are damaged, get new ones fitted. Clean the dust or dirt accumulated on them if they are in good condition.
  6. Check if the throttle present on the carburetor opens completely when the gas pedal is pressed to the floor. Do this with the engine OFF and the key out. If this isn’t happening, it means that the throttle cables have to be adjusted.
  7. Check if the air filter box has moved out of place. You can use a rubber tie-down strap to strap the lid in place. If one or both the rubber hold-downs are broken, get it changed.


Why Yamaha G16 has no power

Your Yamaha G16 golf cart might have no power due to dirty or corroded battery terminals or a faulty controller.

  1. Check the battery terminals to ensure that they are intact. Replace the corroded terminals. If they are dirty, remove them and get them cleaned. This is a good chance to check if all the batteries are holding the desired charge or voltage. If not, you have one or more faulty batteries that need to be changed.
  2. Inspect the controller to see if it’s performing as desired. If the batteries and their cables are in good condition and there are no flat tires or brake drag, the problem is with the controller. Changing this will address the issue. Often, rebuilt controllers are more prone to problems.


Why is my Yamaha G1 losing power?

Your Yamaha G1 could be losing power because of a sticky secondary clutch, worn-out slider buttons, a popped-out snap ring, or an overly tight drive belt. Dirty fans and cooling fins, a broken crank seal, and a plugged muffler are some other reasons.

  • Lubricate the secondary clutch so that it gets released from its stuck position and shifts up and down easily. You can also think of removing it, cleaning it thoroughly, and putting it back in place.
  • Replace the slider unit completely if you notice that the buttons are either broken or worn-out.
  • Put the snap ring back in its place on the groove from where it’s likely to have popped off. It’s worth cleaning this area before placing the ring back in position.
  • Ensure that the drive belt is neither too tight nor too slack. Adjust it so that it has the right tension.
  • Clean the fan and cooling fins on the cylinder head thoroughly so that they move freely without any restriction.
  • Replace the crank seal if it’s broken or even if it’s only slightly cracked as this can cause the oil to seep out.
  • Do a compression test using a compression tester and ensure that the engine has the desired compression.
  • Clean a clogged or plugged muffler so that it is not accumulated with dust or dirt and is completely clean.


Yamaha G2 losing power

Your Yamaha G2could be losing power due to an ignition or fuel issue, a dirty carburetor, dirt under the engine shrouds, clogged cooling fins, a stiff secondary clutch, a tight drive belt, or a leaking airbox.

  1. Take out the carburetor and clean it well. If the float is below the desired level, blow in some air through the fuel inlet to raise the float to the right level so that there is no flooding. Also, clean the fuel vent if it’s plugged and ensure free fuel flow by releasing the fuel hose at the carburetor side and turning the motor over. You can also clear a plugged fuel vent by loosening the gas cap.
  2. Get rid of the debris accumulated under the engine shrouds as this can cause the engine to become unduly hot and cause ignition problems leading to power loss.
  3. Get the airbox sealed if your airbox is leaking or replaced if it’s damaged or missing any part. If you have to use the choke every time, it means that you have a leaky airbox.


Why is my Yamaha G16 losing power?

Your Yamaha G16 could be losing power because of a malfunctioning secondary clutch, a broken secondary spring, a worn-out drive belt, or bad fuel. Sometimes, loose wire connections or cable ends, dirty air and fuel filters, a faulty spark plug, or an improper valve adjustment may trigger the problem.

  1. Inspect all the springs in the cart and replace any spring that you find is broken or stretched out far more than it should actually be.
  2. Replace the drive belt if you notice that it isn’t at least an inch wide. The ideal width is 1-3/16 inches.
  3. Drain the existing fuel from the gas tank with a siphon and fill it with good quality fuel such as 91 octane.
  4. Get the spark plug substituted with a new one if you find that it’s become black and is covered with soot.
  5. Clean the air and fuel filters thoroughly so that they are free of dust and dirt. Over time, they may get plugged with dirt or mud.
  6. Adjust the valves so that the clearance adjustment is 0.10mm. This adjustment tends to go out of place over a period.


Yamaha G22 losing power

Your Yamaha G22 may lose power due to a broken C clip or the rubbing action of the helix on the rear end housing, out of adjustment governor, or problematic clutches.

  1. Check for a broken C clip on the rear clutch and get a new one fitted in its place.
  2. Look out for the helix rubbing on the rear end of the housing and adjust it so that there is no more rubbing.
  3. Inspect the governor to see if it’s in position and if not, do the required adjustment.
  4. Release sticky clutches and replace malfunctioning clutches. Improper clutches can pave way for slipping drive belts.


Yamaha golf cart has no power going uphill

Your Yamaha golf cart will not have power while going uphill if it has a fuel related problem, a worn-out, cracked, or loose drive belt or tension cable, malfunctioning clutches, or low battery voltage.

  1. Replace the fuel if the power improves when you pull the choke when the cart is going uphill. Changing the existing fuel to better quality fuel may help.
  2. Get a new drive belt fitted if the present one is worn-out or cracked. A loose belt will also need to be replaced.
  3. Replace the drive clutch, driven clutch, or both if they have grooved or marred faces. Sometimes, replacing the ramp buttons of the driven clutch alone will fix the problem.
  4. One or more batteries may not be holding the desired voltage. A load test can help you determine the condition of the batteries to replace the faulty ones. This is a good chance to clean the battery terminals.


Yamaha electric golf cart has no power on the solenoid

A Yamaha electric golf cart usually has no power on its solenoid due to a faulty controller, cut wires, or blown-out fuses.

  1. Remove the small black wire connected to the solenoid and check if the voltage of its small red wire connection rises to the battery pack voltage. If yes, you have to do a controller replacement.
  2. Replace blown-out fuses with new ones taking care to ensure that the new ones have the same rating as the old ones.
  3. Look out for cut wires below the floor access panel and if so, get new ones fitted in their place.


Ernie loves documenting interesting facts about golf.

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