It can be pretty annoying to get in your RV shower after a long day and have a constant pulsing of water hitting you when you’re trying to relax and get clean. If you’ve noticed your RV water pump pulsing, we’re sure you’re wondering what’s causing the issue and how you can fix it.
The good news is that a pulsing RV water pump is a common problem, and it’s usually easy to solve. We’ll explore the reasons why your RV water pump may be pulsing and provide you with some simple solutions to get it working properly again. Whether you’re a seasoned RV owner or new to the lifestyle, this guide will help you understand and troubleshoot this common issue.
Why Is My RV Water Pump Pulsing? Common Issues and Causes
If you are experiencing pulsating water pressure in your RV, there could be several reasons for it. In this section, we will discuss some common issues and their causes that can lead to water pump pulsation.
There’s A Leak In Your RV Plumbing System
One of the most common reasons for a pulsating water pump is a leak in your RV plumbing system. Even a small leak can cause the pump to turn on and off frequently, resulting in pulsating water pressure. You can check for leaks by inspecting all the pipes, fittings, and valves in your RV’s plumbing system.
There’s A Blockage Somewhere In Your System (Usually The Water Filter)
Another reason for water pump pulsation is a blockage somewhere in your RV’s plumbing system. The most common culprit is the water filter. If your water filter is clogged, it can restrict water flow, causing the pump to turn on and off frequently. Regularly replacing your RV water filter can help prevent this issue.
You Have A Stuck Foot Valve Or Check Valve
A stuck foot valve or check valve can also cause water pump pulsation. These valves are responsible for regulating water flow in your RV’s plumbing system. If they get stuck, they can cause the pump to turn on and off frequently, resulting in pulsating water pressure.
Your RV Fresh Water Tank Supply Is Low
If your RV’s fresh water tank supply is low, it can cause the water pump to turn on and off frequently. Make sure to regularly fill up your fresh water tank to prevent this issue.
See related: How long can you keep fresh water in your RV tank? And How to fix problems filling your RV fresh water tank.
Your Fill Valve Could Be Bad
A bad fill valve can also cause water pump pulsation. The fill valve is responsible for regulating the water flow into your RV’s fresh water tank. If it is not working correctly, it can cause the pump to turn on and off frequently, resulting in pulsating water pressure.
Your RV Has Low Water Pressure
Low water pressure in your RV can also cause water pump pulsation. If the water pressure is too low, the pump may turn on and off frequently, resulting in pulsating water pressure. You can check the water pressure using a pressure gauge and adjust it accordingly.
Pulsation Damper Issues
The pulsation damper is a device that helps regulate water pressure in your RV’s plumbing system. If it is not working correctly, it can cause your water pump to pulse.
Check out this video showing how to adjust a damper:
How to Fix a Pulsing RV Water Pump
If you’re experiencing a pulsing RV water pump, it can be frustrating and unpleasant. Luckily, there are several things you can do to fix the issue and get back to enjoying a consistent water flow. Here are some steps you can take:
Checking for Blockages
One of the most common reasons for a pulsing RV water pump is a blockage in the system. To check for blockages, start by turning off the water pump and opening all the faucets in your RV. Then, turn the water pump back on and let it run for a few minutes. If you notice any air or debris coming out of the faucets, this is a sign of a blockage. To fix the issue, you may need to flush the system with fresh water or replace any clogged filters.
Fixing Leaks
Another common cause of a pulsing RV water pump is a leak in the system. To check for leaks, inspect all the connections and fittings in your RV’s plumbing system. Look for any signs of water damage or wet spots. If you find a leak, you’ll need to repair or replace the affected part.
Adjusting the RV Water Pump Pressure
Sometimes, the pulsing RV water pump issue can be solved by adjusting the pressure settings on the pump. To do this, you’ll need to locate the pressure switch on your water pump and adjust it to the manufacturer’s recommended settings. This may require some trial and error, so be patient and make small adjustments until you find the right pressure setting.
Installing an Accumulator Tank or Pulsation Damper
If adjusting the pressure settings doesn’t solve the problem, you may need to install an accumulator tank or pulsation damper. These devices help regulate the water pressure in your RV’s plumbing system, which can reduce pulsing and improve water flow. Consult with a professional to determine which device is best for your specific RV.
Replacing the RV Water Pump
If none of these solutions work, you may need to replace your RV water pump. This should only be done as a last resort, as it can be costly and time-consuming. However, if your water pump is old or damaged, replacing it may be the only way to solve the pulsing issue.
Frequently Asked Questions
To adjust the pressure of a Shurflo water pump, follow these steps:
Turn on your RV shower.
Locate the pressure switch on the water pump, which is two red wires coming out of the pump housing.
Use an allen wrench to adjust the Shurflo pressure switch to the desired setting, trying a quarter-turn at a time.
To adjust the pressure of a Flojet water pump, follow these steps:
Turn on your RV shower.
Locate the pressure switch on the water pump by removing the cover plate with a Phillips head screwdriver.
Use a screwdriver to adjust the Flojet pressure switch to the desired setting. (The adjuster is a Phillips head screw that’s located between the electrical connections under the cover you just removed.)
To adjust the pressure of a Seaflo water pump, follow these steps:
Turn on your RV’s shower.
Locate the pressure switch which is on the end of the water pump that has the rest of the plumbing connected to it.
Look for 2 red wires coming out of the water pump housing.
You can use a hex key or Allen wrench to adjust the screw on the housing.
Adjust the Seaflo pressure switch to the desired setting.
Water pump pulsing can cause damage to your plumbing system and can be very frustrating for any RVer. It is best to fix the issue as soon as possible to avoid any potential damage.
No, an RV water pump should not keep switching on and off. This could be a sign of a leak or a malfunctioning pressure switch. It is best to address this issue as soon as possible to avoid any potential damage.
Yes, a water pump silencer kit can help reduce water pump pulsing by reducing the vibrations of the pump. This can help prolong the life of your plumbing system and make your RV experience more comfortable.
Yes, a water pump silencer kit can help reduce water pump pulsing by reducing the vibrations of the pump. This can help prolong the life of your plumbing system and make your RV experience more comfortable.
The lifespan of an RV water pump can vary depending on usage and maintenance. On average, an RV water pump can last between 5 to 10 years. It is important to regularly maintain and inspect your water pump to ensure it is functioning properly.
Check out our other helpful RV repair guides while you’re here:
How to fix an RV water pump that keeps running
What to do if your RV toilet isn’t holding water