Skip the auto shop - Our mechanics make house calls

Q: I have an oil leak on a2000 s40 it appears to be coming from the solenoid for the can sensor and the valve cover I've replaced th

asked by on

2000 Volvo s40 oil leak in the timing belt area it appears to be coming from valve cover in the corner and the can position sensor solenoid I've changed the gasket on the solenoid no change could it be clogged pcv

A: Locating oil leaks can be challenging. Ther...

Locating oil leaks can be challenging. There are a few common culprits with every car. The general rule is always look up above where you see the oil. In your case, there are at least three distinct places that commonly leak oil. It sounds as though you have replaced the variable valve timing solenoid. A camshaft position sensor is not a solenoid. It’s important to differentiate between a solenoid and a sensor. They are distinctly different devices.

With your car, it could be the valve cover, camshaft seal or camshaft position sensor. Valve covers will leak at corners, seams or when the gaskets get hard. Camshaft seals are rubber just like your valve cover gasket, but are round with the camshaft spinning inside of them. When they get hard, they will begin to leak. They are located under the top timing cover, behind the camshaft gears.

Less likely, but possible. If you don’t see an external leak above, your crankshaft seal could be leaking. Sometimes, when the crank seal leaks, the timing belt can spread the oil leaking from it all over the inside of the timing cover.

As with any oil leak, often times we need to do some disassembly to find the source of our leak. If you should need help locating your oil leak, I recommend the following inspection to be performed by a certified technician from YourMechanic; Oil/Fluid leak inspection.

Good luck!

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

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: My car has recently been leaking power steering fluid. Once it's refilled the power steering fluid will last about 3 to 4 days.

This suggests your power steering pump may be failing or you have a leak elsewhere in one of the power steering lines. The [power steering]((https://www.yourmechanic.com/services/power-steering-fluid-is-leaking-inspection) system operates on very high pressurized hydraulic pressure (in some cases as much as 300...

Q: Coolant Leak

Hi there. The coolant can disappear for a number of reasons. The most common being an external leak. If it is not obvious as to where it is coming from then the system needs to be pressure tested. The water...

Q: When should I change the engine oil? What is the best oil type for winter and summer?

The engine oil used for summer is typically thicker. Thinner oil in the winter allows it to warm up quicker and lubricate sooner. Thicker oil will take longer to warm up and perform its duties. Your vehicle may only want...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.