How to Bypass Purge Valve: 5 Simple Steps

How to Bypass Purge Valve

The canister purge valve is referred to by many as a purge valve. You may know that the purge valve is one of the most critical components of the Evaporative Emission Control System (EVAP). Basically, when your vehicle stays at a higher temperature for a long time, then in your vehicle’s fuel tank start the vapors producing, and the charcoal canister prevents them from escaping.

The purge valve prevents fuel vapors from escaping into the atmosphere and protects large amounts of usable fuel wastage. Maybe you understand the importance of a purge valve for your fuel tank. However, because of a bad EVAP purge valve, your vehicle can face various problems, so you need to keep this aspect in mind.

Due to various vehicle problems, many people are thinking of removing the EVAP purge valve and want to know how to bypass purge valve? But before you must know, can you bypass EVAP purge valve? Anyway, this guide has been made with this kind of more queries, where we have tried to discuss each and everything in detail. So let’s start our journey.

What Happen When A Purge Valve Goes Bad?

As your purge valve system goes bad, you can face many kinds of problems. Below are some of the notable issues.

  • You will always get a fuel smell inside your vehicles as a result of a bad purge valve, which is really annoying.
  • Also, due to a vacuum leak, you will not get your desired brake boost.
  • Your vehicle’s engine will continuously show signs of poor performance.
  • Accelerating moving slower, and you also gradually feel when pressing the pedal down.
  • The engine will not produce acceptable power for acceleration and will feel running weak.

Can You Drive With A Bad Purge Valve?

If you do not have a possibility at the moment, then certainly possible to drive a car with a bad purge valve, but most mechanical experts are not recommended to drive with a broken purge valve. The main reason is that if you drive with a bad purge valve for a long time, then at some point, your complete EVAP system and other parts are highly damaged; I think you will never want to bring into this kind of problem.

You will also have a huge amount of usable fuel waste because it will continue to waste beyond the requirements of emissions systems.

How to Bypass Purge Valve

How to Bypass Purge Valve

Let’s come to the main part! In this section, we will discuss how to remove EVAP vent solenoid in detail. Observe each step carefully; Don’t miss any part because this section will help you to understand everything.

Step 1:

First of all, many vehicles have the EVAP purge valve section covered to be protected; if your vehicle is the same, then, with the help of an impact wrench, carefully remove the cover on top of the EVAP purge valve section, and pay special attention to the surrounding hoses, plugs, and cables so that there is no damage.

Step 2:

Then you can see a couple of electrical plugs and the vacuum line here, and we will not go to these parts. Instead, we will need to release the plugs directly to the EVAP purge valve.

Step 3:

Then collect a Universal Plug Kit pack; you will get it on Amazon. Pretty easy to remove the plug from the EVAP system; you can just remove the two plugs with the help of your hands. Then, after pulling out the complete EVAP system, cover both the inlet port and manifold port with the desired sizes cap from the Universal plug kit pack, and wrap it sufficiently with tape.

Step 4:

Then pay special attention to the vapor and gases release port because we will connect this port to the fender with the help of a soft line so that no fuel smells come later. After connecting a soft line fender to a vapor port, now our bypass process is complete!

Step 5:

Finally, after the bypass process, again set the top cover of the EVAP purge valve system.

FAQ: Frequently Asked Questions

What are the symptoms of a purge valve?

Bad vapor canister purge valve has many symptoms, but the five most common symptoms we are sharing are below.

  • Rough idle
  • Check engine light ON
  • Emission test failure
  • Gradually poor engine performance
  • Trouble when you start the car

What happens if you don’t fix purge valve?

At first, it will not cause you any problems, but after a while, you will face a lot of bad situations. If your canister purge valve is stuck open, it will leak your vehicle’s vacuum system, which will badly affect your vehicle’s engine. First of all, it will completely change the fuel ratio of your car, which at one stage will make your car rough idling.

Whenever your car engine starts, it will start rough and bouncing; many times, you may face difficulty while starting the car engine.

Will my car run without a purge valve?

Though the purge valve is basically a small component, it is an essential part of your vehicle’s EVAP system. Without a purge valve, your vehicle will be able to run, but the engine will pass a tough time. This can later affect your car’s spark plugs and cause carbon buildup in your car’s entire engine.

How do I know if my purge valve is stuck open?

This is the most common problem, which almost everyone asks, many times due to having purge valve stuck open; Check Engine Light is ON on the dashboard of your car, also seen in many vehicles, the engine becomes rough for a few seconds, after refilling from the gas station.

Is a purge valve and purge solenoid the same?

As we mentioned earlier in our guideline, many people refer to the canister purge valve as a purge valve; it is basically an essential part of the emission control system, which is electrically operated. As a result, many people refer to it as a purge solenoid.

Final Verdict

I think you have understood the importance of purge valve from this guide, so it is your decision whether you bypass it or not. Also, in our guide, we have thoroughly discussed all the related things, as well as how to bypass purge valve simply; it will help you simply to get a concept of ​​how to bypass.