Skip the auto shop - Our mechanics make house calls

Q: Vapor canister purge valve has a loud tick? Very rough idle upon starting after a refueling.

asked by on

Vapor canister purge valve has a loud tick, is this normal? Very rough idle upon starting after a refueling but clears in 3 to 5 seconds and resumes normal idle.

My car has 156000 miles.
My car has an automatic transmission.

A: Hey there. The purge valve ticking noise is...

Hey there. 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. This will cause the engine to get fumes into the engine when it should not be getting them and will cause hard start and running rough until the excess fumes are burned. Replace the purge valve to correct the problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Going through too much oil, not leaking out

What you are seeing with the oil consumption on your engine may be abnormal. The oil is being consumed by your engine. Some of the oil is being burned up in the combustion process and the rest is going out...

Q: Put windshield wiper fluid in coolant reservoir by accident

If you did NOT operate the car after putting the washer fluid in the coolant overflow reservoir, simply use a turkey baster, or like tool, to suck the contaminated fluid out of the reservoir, pour some water in and then...

Q: engine light

If your vehicle's check engine light illuminates, there is a malfunction that should be diagnosed and repaired. If the check engine light is flashing, that means there is a serious fault, such as cylinder misfiring, that requires immediate repair. Misfiring,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...