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Volvo S40 Pcv Hose

Commonly Encountered Problems with a Volvo S40 PCV Hose

Fuel, being a very expensive resource, needs to be used wisely. It is also recommended that every drop of fuel should be used and not wasted. The PCV is the main part for this type of job. As fuel burns, it emits unburned fuel vapor and other materials which are harmful to the environment. What the PCV Valve does is it takes these vapors and reroutes them into the intake manifold for further usage, a process that passes through a PCV hose. There are problems related to a bad PCV hose, and they are listed below:

Contaminated air filter

A product of a stuck-close valve because of blow-by gases, contamination occurs when gasoline builds up in the hose. Oil tends to travel up the clean air hose and into the air filter. This contaminates the air filter, or breather, and can cause problems for you and your car. Some of these problems may include issues in drivability and when traveling.

Engine light becoming lit

This is usually a case for suspicion since a PCV hose does not cause this. There is usually something wrong with your PCV if this happens, and that something wrong is a vacum. An area of vacum within your PCV valve or hose occurs when there is air leaking into the system. This causes the 'Check Engine' light to illuminate. Take out the PCV valve with the hose still attached to it if you are to check it for leaks and cracks. If there is nothing wrong, you should look at the vacum hose to trace the cause of the problem.

Varnish deposits

Another problem with the PCV valve and its hose is the varnish deposits. These are contaminants that, along with dirt and gum deposits, line the passage ways of the hose. It can choke the hose and the valve. If you experience rough idling, hard starting, engine stalls and increased emissions, then you might have a PCV hose problem. If this problem continues to persist for you, you should consider getting a replacement as soon as possible.

Wrong PCV valve

While a PCV valve will never have a problem using the same hose, it will always cause a problem if it's not for the specific make or car model. A PCV valve is always made according to the needed specifications of a car. If your car has a wrong PCV valve installed on it, it will cause a faster buildup of sludge in the crankcase, causing even more problems for your engine.

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  • Keeping your Volvo S40 PCV Hose in Good Working Condition 27 February 2013

    A PCV valve is something that a car cannot be without. While the intake manifold mixes gas and air, the PCV makes sure that nothing is laid to waste and everything is used accordingly. A bad PCV valve will cause a lot of problems for the engine, like rough stalling or hard starting. To keep your PCV valve running smoothly, here are a few tips to follow:


    Use only genuine parts

    Some drivers may argue that you can get the same performance on a more economical PCV valve replacement. It may be true, but what is also true is that these do not have the same flow as the OEM variant. Most of these OEM variants have been calibrated to be almost like the original factory valves. Choose OEM variants over cheap replacements to keep the smooth operation of your car.


    Replace the system every decade

    The parts of a car will inevitably wear down with time. What was a thing of beauty today may become tomorrow's lemon. To avoid this, you must replace your PCV valves every 10 years or 100,000 miles. Of course, this does not involve replacing your PCV valve because of a clog or other types of damage. Replacements will often jack-up the performance of your vehicle into something reminiscent of your car's brand new drive.


    Regularly change your oil

    The engine benefits a lot from having your oil changed. Aside from gaining a real power with the use of new oil, another benefit is sludge removal, making it breathe easier and run more comfortably. A regular oil change will also work its wonders on a PCV hose. One of the main enemies of a hose is clogging due to a number of contaminants and oil sludge. Oil change will flush down the sludge from the hose, making the valve breathe easier in turn.


    Replace the hose

    You should consider having a replacement hose when your PCV valve has already suffered from clogging way too much. There might be leftover sludge that remains clinging to the hose. A new hose will definitely give your car a boost in its power. It will also make the PCV valve draw air more easily, eliminating the possibility of creating more oil sludge and clogging of your system.