Freelander Oil Catch Can

No, I have neither replaced nor cleaned the oil vapor separator guaze. Do you do it by yourself? Any site or video where to look for this replacement? I can try to see the impact on oil deposition. The guaze is also used in oil catch tanks to improve the oil separation by increasing contact surfaces so may the replacement of the guaze in the cam cover will be enough and I will not need the catch tank. Thanks a lot for your advice.

The gauzes are under the cam covers, 1 for each bank of cylinders.
They are in the high section where the CVS pipes emerge.
They need to be periodically cleaned. It's a cam cover off job.
It's possible to stop the VIS motors from getting oil contamination by drilling a tiny 0.5mm hole in the top of the motor casing. This allows a small amount of air into the motor casing which helps keep the oil out.
It's not an official modification but it works. I've been using this technique for many years, without a problem.

I have never touched the cam cover and having into account that it is a cam cover off job I need to become acquainted with this job. Thanks a lot for all your help, our car is running well just because of your advices other wise it was running lean and I was thinking that I can´t solve blow-by related issues. THANKS A LOT!!!

renald said:

I have never touched the cam cover and having into account that it is a cam cover off job I need to become acquainted with this job. Thanks a lot for all your help, our car is running well just because of your advices other wise it was running lean and I was thinking that I can´t solve blow-by related issues. THANKS A LOT!!!

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Glad it's running now. Blow by isn't an issue with the KV6 unless it's done very high milage or skipped a few oil changes.

Hi everyone,
sorry to revive an old thread, but just wanted to see if anyone here uses oil catch cans in their KV6's, and if so, is there are loss in power or any disadvantage? Thanks to this site and Hippo's upload of the Land Rover TSB A151 recall from March 2005, this morning before it got too hot here, I removed the cover to the Vis Motor and yep, confirmed that my small engine tick tick is in fact the plastic arm has broken in the inlet manifold chamber. Have ordered a Rover 75 manifold chamber from a Rover 2004 model, and thinking about an oil catch tank to go with it. Lastly, I will go to the Land Rover dealer here for the software upgrade. Thanks again to this site and Hippo for that upload. Wondering if it's worth me fitting the oil catch tank to the KV6 Freelander and if anyone else here has done it and what the results are. I removed the engine acoustic cover today and i can see that there is a tiny bit of oil in the throttle body yet again as before. I read somewhere on the Net (not related to the KV6 or Freelander or Land Rover at all) that sometimes a bit of oil is required at the top end of an engine that works hot such as the KV6..What does everyone else here think? Should i fit the catch tank or am i wasting my time and doing more harm than good?

Lots of MG boys fit catch tanks, some fit two. I had one on my ZS180. I still got oil in the throttle body on mine. I don't think it's a major problem. The engine doesn't notice it, that's for sure.

Thanks Nodge, I'm convinced, I'll be fitting a catch can!

niccage said:

Thanks Nodge, I'm convinced, I'll be fitting a catch can!

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You can fit two catch tanks as we call them . There are two types of crankcase ventilation employed on the KV6. These are both positive and negative ventilation. So when the inlet manifold depression is high, some of this vacuum is applied to the crankcase via the small black pipes. When the engine is operating at higher power levels, positive crankcase ventilation is employed. This is taken care of by the larger vent pipes. So you can, ideally should fit two catch tanks, one on each CV pipe. The important thing to remember though is, the negative CV piping must be completely air tight, or bad running will result. Good luck.

Something else I'm going to try prior to that is to renew those oil separator gauzes from the cam shafts, just awaiting their arrival in the mail within days. Will renew and see what results are like. I may as well take the opportunity to do that since I already have the inlet manifold chamber removed since I'm renewing that for one from a 2004 Rover 75 these guys were wrecking in South Australia... that's thanks to Hippos posting of the A151recall March 2005 for the KV6, the ticking sound, i carried out the test as per that service bulletin and found sure enough mine was affected by that. Just out of interest, did you renew the oil separator gauzes and if so, whats the result like? Or did you just clean them with something like mineral spirits, etc?

The cam cover gauzes can be cleaned with petrol and left to dry

I see the importance of that as Land Rover went so far as to put that step in RAVE as part of the "remove camshaft gasket" step for the KV6. Thought my oil gauze/s would have arrived in Monday's mail, still haven't got them today...