Q: oil is entering through throttle body and smoking from exhaust after pcv valve

asked by on

Replaced pcv valve and oil is going through throttle body and exiting through exhaust, resulting in lost of oil and causing white smoke to emit from tail pipe.

Hello there, a few different faults can cause oil to be burned and white smoke to be seen. The most common would be excessive blow by, an intake leak, failed PCV valve or valve stem seal.

A qualified technician such as one from YourMechanic will be able to diagnose the cause of the white smoke and perform any repairs required.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. oil is entering through throttle body and smoking from exhaust after pcv valve

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: Q: Stalling problem

Hi there, thanks for writing in. Your car has an idle air control valve that commonly fails. The purpose of the idle air control valve is to allow enough air to bypass the throttle body to keep the car idling...

Q: My 05 Cadillac STS is not always starting and hesitates

It could be that the battery in the key fob is weak. The key fob uses a watch battery and it lasts a long time, but won't go on forever. The batteries are usually standard items that you can buy...

Q: What does it mean if your pcv valve is only pushing air out?

The engine valve cover has two vents for the crankcase to vent combustion gases. In one hole you should have a PCV valve and a hose or two attached. The big hose goes to the intake manifold and the small...

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...