Q: Would a leaking valve cover gasket cause a misfire?

asked by on

My valve cover gasket on my truck is leaking oil and I was wondering if this would cause a misfire and a RPM decrease while idling?

My car has 137000 miles.
My car has an automatic transmission.

A leaking valve cover gasket can cause a misfire if oil is leaking into the spark plug wells. But that is usually not the problem. Most often the misfire will have a separate cause. But a leaking valve cover can cause smoke, bad smells and even fire, so it is in your best interest to take care of it right away. If it solves the misfire problem, that much the better. In either case, you can contact YourMechanic to have a technician come out to your home or office to replace your leaking valve cover gasket and check out your misfire right there on the spot.

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. Would a leaking valve cover gasket cause a misfire?

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: Suspension problem

Using descriptive words to give us an idea of what kind of problem your experiencing is very important in a situation like this. Descriptive words like moaning, squeaking, popping, clunking, etc., can really help give us an idea of where...

Q: Q: Car stutters when accelerating.

You could have gotten some bad gas from a gas station that has a lot of water in the fuel. When there is excessive water in the fuel, the engine will tend to run rough at a low rpm and...

Q: The ABS and traction control lights stay on the dashboard

Your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information to the ABS and traction control system, which are controlled by the car's ECU. When the ECU senses...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...