After receiving multiple messages for knowing how to eliminate the earth particles from a purge solenoid valve, we have finally decided to put it up. In the following article, you will discover the most effective ways of cleaning a purge valve, in two ways, one a little less invasive while the other will get rid of all the dirt inside and out. Below we will also discuss whether “Can you fix a purge valve? “ and much more!


Cleaning a purge solenoid valve depends upon the sort of applicable knowledge you possess. It can originally be done in two different manners, however, if the primary motive is to clear out the dirt and soil that affects the vehicle’s smooth functioning, just cleaning the inner parts without needing to open the whole system should get the job complete for most individuals.

In case you possess a broken or faulty purge solenoid valve, there is not a lot that you can do, you will ultimately have to get rid of the solenoid valve. In any case, if you made a thorough check and discover no major damages with the solenoid coil and adjustments, just simply knowing the ways of how to clean it will get the engine smoothly functioning again, saving a lot of your cash.


The purge valve, otherwise called the canister purge valve, is essential for your vehicle’s evaporative emanation control (EVAP) framework. It traps the fuel fumes made in your gas tank and adheres them from getting away into the atmosphere. On the other hand, a purge solenoid valve is a basic gadget; The canister purge solenoid is the segment in the EVAP framework that is solely responsible for “cleansing” the EVAP framework, by going about as the switch that permits the fume into the motor.

At the point when the cleanse solenoid comes up short, it will mess up the EVAP framework, which will influence the vehicle’s emanations yield levels. It comprises essentially of three primary parts:

  • A packaging with two connectors for the exhaust delta and outlet.
  • An electrical attachment for the solenoid’s control.
  • An inside solenoid and an unclogger (or fold) that, contingent upon the solenoid’s state, (connected with or separated), will permit the vapor to pass to the power source pipe or not.


There are three primary issues that a  purge solenoid valve may have:

  • The packaging (counting the delta and outlet pipes) could be broken, permitting the fuel exhaust to get away and, more often than not, creating a vacuum spill.
  • The solenoid’s loop could be cut or harmed, keeping it from moving the unclogger or fold appropriately.
  • The most well-known issue happens because of trash or carbon development, the inward electromechanical part sticks, forestalling the cleanse solenoid valve from completely opening or closing.
  • Once in a while, it can stall out in a fixed position and it will not move by any means. 


Cleaning the solenoid purge valve will dispose of this flotsam and jetsam and there are two manners by which you do it:

Find the valve; unplug the vacuum lines and the electrical connector. You would now be able to eliminate the valve from the vehicle.

You can attempt to clean it without opening it. On the off chance that that does not work and you have great specialized abilities, or you need to do a profound cleaning, you could open the purge solenoid valve.

Technique 1: Cleaning A Purge Solenoid Valve Without Opening It

The bit by bit instructions for cleaning without opening the valve is given below:

  • Shower a decent measure of carb cleaner or MAF cleaner into the two containers of the cleanse solenoid valve.
  • Cover the two closures with your fingers and shake well. Leave the two closures covered and trust that the cleaner will lose soil.
  • Uncover the valve’s cylinders and allowed the fluid channel to get out. It ought to be dull, with indications of soil, charcoal, and trash. Rehash steps “1” and “2” no matter how many times as important. The ideal thing would be that you do it until the fluid leaves the valve clean.
  • If the fluid confessed all the first run through, it is presumably because your purge solenoid valve is not obstructed by earth or garbage and soil is probably not going to be the issue. You might need to continue doing this at any rate; it will not do any damage to your valve.
  • Splash contact cleaner in the valve’s connector and the vehicle switch.
  • Allow everything to dry.

Technique 2: Opening And Profound Cleaning Your Purge Solenoid Valve

Cleanse solenoid valves are not intended to be opened. You will figure out how to open it utilizing a little level cutting edge screwdriver and something sharp like a little blade to constrain the case open.

Opening And Profound Cleaning Your Purge Solenoid Valve
Opening And Profound Cleaning Your Purge Solenoid Valve
  • Most purge solenoid valves like the Bosch type (that you can discover in numerous vehicle models) have their two parts stuck together. What you need to do is (with the assistance of the little level edge screwdriver), attempt to eliminate as much paste as possible.
  • When you notice that you have eliminated some great measure of paste, attempt to immovably yet cautiously destroy the two closures of the packaging.
  • Since you have the two parts split, you will have a little adjusted piece, similar to a cap. The other half contains every one of the functioning parts, the solenoid, the valve’s electrical connectors, and so forth. You currently may eliminate the valve body from the case.
  • Check the situation with the o-rings and the elastic parts. Until further notice, these parts are not sold independently. They should be sold as a maintenance unit. It is not a lot you can do about this.
  • If they are in one piece, you can attempt to grease up them cautiously with some silicone oil. The trickiest parts are the topmost rubbers and the o-rings.
  • The lower o-ring is likewise critical to guarantee a legitimate seal. This one is simpler to discover if you consider that it should be supplanted.
  • Here and there the valve’s electrical part might be working appropriately, yet it could be spilling a direct result of a deficient o-ring. That is the reason it is so critical to seal everything back when you are reassembling the valve.
  • Splash the inward piece of the solenoid.
  • Utilize a decent arrangement of Carb or MAF cleaner to do the work. For better and profound cleaning, it is prudent to rub the holes with a dry material.
  • Whenever everything is cleaned and fixed, it is an ideal opportunity to assemble everything back. Reseal the case along with Epoxy paste or RTV elastic.
  • Remember that whenever you have fixed your purge solenoid valve with these items it tends to be exceptionally difficult to open it once more. Ensure that everything is organized before you stick the two parts back.
  • Apply firm pressing factor while the paste is restoring. It is ideal to place the re-gathered valve into a tight clamp while the paste or RTV dries.
  • Adhere to your glue’s guidelines to realize when it is protected to eliminate your fixed purge solenoid valve from the tight clamp.

So, these are the two ways of how to clean evap canister. Further on we will talk about evap purge solenoid symptoms and more.



A terrible purge solenoid valve will make errors to the EVAP framework that not exclusively will influence the motor’s outflows yield levels however, could most likely cause the motor to fail in functioning too.

Things being what they are, how would you perceive if your purge solenoid has turned bad? Here are a few manifestations of a terrible purge solenoid valve:

Indication #1. Harsh Idle

On the off chance that the canister purge solenoid valve sticks open, it will make a vacuum release that will make the motor run harshly when standing by or when the vehicle is driven at low velocities.

If the vacuum spill is too huge, the motor could slow down consistently, not exactly at low RPMs.

Indication #2. Check Motor Light On The Dashboard

On the off chance that the ECU identifies a breakdown in the EVAP framework, it will illuminate. There are a few difficulty codes that can turn this light ON; yet there are explicit codes that allude to EVAP framework mistakes, the purge solenoid circuit, or sign.

Check Motor Light On The Dashboard
Check Motor Light On The Dashboard

Indication #3. Start-up Inconveniences

Another basic manifestation of a terrible purge solenoid is that the motor can have fired-up issues; it tends to be hard to be fired up. This is generally an outcome of the vacuum spill brought about by the errors of the purge solenoid.

This hole permits unmeasured air to enter the motor, which changes the air-fuel proportion needed by a motor to turn over appropriately.

Indication #4. Motor issues/Poor Engine Performance

A faltering canister purge solenoid valve may make a motor lose force and lead to a moderate speed increase.

Indication #5. Helpless Efficiency

An awful canister purge solenoid valve can make a vehicle have helpless gas mileage. This happens because the EVAP will vent fuel fumes that were intended to be signed by the motor.

The fuel will disappear to the environment as opposed to being utilized by the motor, which will make the motor to be less eco-friendly.

Indication #6. Pressing Factor Develop Inside The Gas Tank

At the point when a canister purge solenoid valve is stuck shut, it might cause a limitation in the fuel framework that could prompt high pressing factor collecting inside the gas tank, which will then cause other major issues.


How To Test Purge Valve
How To Test Purge Valve

You can track down the appropriate technique to test the purge valve in the vehicle’s administration manual. The methodology is diverse relying upon the vehicle make and model. In many vehicles, the purge valve is regularly shut, which means it ought to be shut with no voltage and open when the voltage is applied.

How To Test Purge Valve?

  • For instance, for a certain vehicle, the help manual prescribes applying battery voltage to the cleanse valve terminals and check whether it delivers a discernible snap. We simply utilize a 9-volt battery to show. This purge valve creates a perceptible snap.
  • In another case, according to the assistance manual for a certain vehicle, it might need to test if the purge valve closes appropriately and does not spill. Then, you should associate a hand-held vacuum siphon and apply the vacuum to the purge valve to test.
  • In some other case, you might find out that very quickly, the vacuum drops. This purge valve does not seal as expected and should be supplanted. If the vehicle has a “Check Engine” light on the scramble, you will need to get it examined and get the code P0446 – Evaporative Emission Control System Vent Control Circuit Malfunction. You should then try the EVAP framework and discover that it might have a sluggish break. Presently you will discover the offender!
  • In another scenario, presently you need to associate with the battery voltage. The cleanse valve clicks and the vacuum promptly drops. Such a purge valve is acceptable.
  • Close to a purge valve, the EVAP-related Check motor light codes are frequently brought about by a defective vent valve or a gas cap.


So, that was all that there is about how to get clear of the dirt from a purge valve and some faq about it. We hope this article was resourceful for you and will help you achieve your motive!


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