What makes a purge valve go bad?
Like many car parts, the canister can get clogged with dust and dirt. In fact, the purge valve can crack due to harsh environmental conditions. When it fails, it can lead to EVAP system issues that will negatively impact your car’s emission output level.
How serious is a purge valve?
Engine Problems. If your canister purge valve is stuck open, however, it creates a vacuum leak that can affect your engine adversely. This will change the car’s air to fuel ratio, and can cause rough idling (car feels rough and bouncy when the engine is running), as well as difficulty starting.
Can a bad purge valve cause damage?
If the canister purge valve fails and sticks open, it will create a vacuum leak that can affect the engine idle speed and quality. A vacuum leak can also be created if the purge solenoid, or any of the hoses that may be attached to it break or become damaged.
Can a bad purge valve cause a lean condition?
On the flip side, if the purge valve is stuck open, and the system has an “always open” vent valve, the engine will idle rough because the stuck open purge valve will act like a vacuum leak, causing a lean idle condition.
How much does it cost to fix a purge valve?
The cost to replace a purge valve in your car is generally between $110-$170, with the parts being the expensive price of the replacement, coming in at an average of $75-$110, while the labor usually only runs at about $50, meaning this is a quick and straightforward fix that does not take very long.
Will a purge valve make noise?
The purge valve ticking noise is most likely normal and should not be noticed inside the cab when the windows are up. If it is too loud inside the cab, then have the valve replaced. The purge valve may be leaking vapor by it and into the engine when you are refueling. Replace the purge valve to correct the problem.