breather/diverter valve?

[Sonic_Vrs]

Read on a different thread that if you (whilst idling) try to remove oil filler cap and it gets sucked back it could be a breather valve issue. Is this true? If so mines gone as when i try to remove oil cap it pulls air in and the engine 'chugs' till i replace.

Ive also been told that on early petrol vrs's that the diverter valve may be weak- are these the same valves?

Any help appreciated!

[Ecomatt]

The valve you are on about is the PCV valve. This can fail and can be either replaced with the new 'L' revision valve or one like the BSH revamp/catch can. The diverter valve is different and is fitted to the turbo charger, which can also fail and most people fit the 'D revision.

If you have any doubts then scan your car for fault codes and the most likely code that is associated with these failing is P0299

[sherlocks VRS]

Engine should as you say go sluggish when you remove the oil cap or remove the Dipstick at idle as the engine is designed to run a sealed breathing system for emission purposes, as said above the pcv valves can fail and the symptoms you get from a failed pcv valve are rough idling poor fuel consumption etc

[Sonic_Vrs]

Oh well maybe ok then. Car is running fine jus thought I'd try out what I had heard in that other thread... Thanks