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

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?
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. 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

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: What could cause check engine light and transmission service message to display on when weather is over 100 degrees?

Hi There, A number of sensors may become faulty in hot weather conditions which will ultimately cause the check engine light to come on. As the weather gets hotter, many sensors, fuel injectors and other components such as ignition coils...

Q: How to check for power steering leak

The easiest way is using the UV leak dye. I've got a video "finding and fixing car oil leaks." You get a little UV leak dye and put maybe a tablespoon in the power steering, drive it around for about...

Q: The truck is from Georgia which doesn't have smog control. In California it won't pass smog. It has a new motor and transmission.

Hi, the blue-grey smoke you mention is your engine burning oil, probably due to worn piston rings or valve guides and seals. This is expected from an engine with 300K miles on it. Unfortunately for you, California has pretty stringent...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.