Freelander Oil Catch Can

:welcome2lease could anybody give me an idea on how to connect an Oil Catch Can to my Freelander 2.5 V6 NAS? I have read on connection of the PCV valve to the input of the can, but I can't find such a valve in my car in order to find the hose, although I have found two oil breather pipes (one is going to throttle body and one to inlet manifold). Which oil breather pipe need to be connected to the oil catch input? If both, then how to do it? Using a T-connector or two oil cans?
Thanks a lot before hand.

I can't find detailed info on this site.

There's some info and pics here, although it isn't a Freelander it is a KV6.

You may need to register to see some of the pics.

I'd be interested to know how you get on

Hi Renald and welcome.
There are 2 CV pipes on the KV6 engine. The large pipe links both cam covers to the atmospheric side of the throttle body. This is the Positive CV pipe. The other smaller pipe again links both cam covers but to the inlet manifold chamber instead. This pipe is at manifold depression so is a Negative CV pipe.
From my own findings on my MG ZS180 (same engine) both pipes are responsible for some oil contamination of the inlet plenum chamber. I ran my ZS track car with 2 catch tanks, 1 in each CV pipe with it's own piping. The system worked well but that was at track speeds. I've never bothered about it on my Freelander as the engine is hardly stressed by comparison.
What is the reason you want a catch tank?

Nodge68 said:

Hi Renald and welcome.
There are 2 CV pipes on the KV6 engine. The large pipe links both cam covers to the atmospheric side of the throttle body. This is the Positive CV pipe. The other smaller pipe again links both cam covers but to the inlet manifold chamber instead. This pipe is at manifold depression so is a Negative CV pipe.
From my own findings on my MG ZS180 (same engine) both pipes are responsible for some oil contamination of the inlet plenum chamber. I ran my ZS track car with 2 catch tanks, 1 in each CV pipe with it's own piping. The system worked well but that was at track speeds. I've never bothered about it on my Freelander as the engine is hardly stressed by comparison.
What is the reason you want a catch tank?

Click to expand...

Thanks a lot. The reason for a catch tank is that I am getting rich fuel mix in both banks and usually there is oil in the air intake system (the large conduct between the MAF sensor and the Throttle). The LR repair center supposes that this is caused by blow-by gases, but they do not assume the installation of the oil tank. Please, what do you think? What is your opinion?

bukko said:

I can't find detailed info on this site.

There's some info and pics here, although it isn't a Freelander it is a KV6.

You may need to register to see some of the pics.

I'd be interested to know how you get on

Click to expand...

Thanks a lot, I will take a look.

Nodge68 said:

Hi Renald and welcome.
There are 2 CV pipes on the KV6 engine. The large pipe links both cam covers to the atmospheric side of the throttle body. This is the Positive CV pipe. The other smaller pipe again links both cam covers but to the inlet manifold chamber instead. This pipe is at manifold depression so is a Negative CV pipe.
From my own findings on my MG ZS180 (same engine) both pipes are responsible for some oil contamination of the inlet plenum chamber. I ran my ZS track car with 2 catch tanks, 1 in each CV pipe with it's own piping. The system worked well but that was at track speeds. I've never bothered about it on my Freelander as the engine is hardly stressed by comparison.
What is the reason you want a catch tank?

Click to expand...

Are these the pipes you have mentioned?

Hmm my favourite pipes!
Be careful if you move them, they can be brittle especially the T joint on #1.

renald said:

Are these the pipes you have mentioned?

Click to expand...

Yes they are the pipes
As Bukko says, be careful as they can be brittle.
when you say the mixture is rich, do you mean the O2 sensors can't correct the mixture ratio? What year is the vehicle?. Does it show a MIL?

OK, thanks for all, to finish the experiment I just need to wait for the first can to arrive and order a new one. Bukko advice will be on my mind. After results I let you know. Thanks a lot one more time to you (Nodge68) and Bukko.

Nodge68 said:

Yes they are the pipes
As Bukko says, be careful as they can be brittle.
when you say the mixture is rich, do you mean the O2 sensors can't correct the mixture ratio? What year is the vehicle?. Does it show a MIL?

Click to expand...

Yes, it shows SES (MIL), I get the codes P0172 Fuel System Too Rich (Bank 1) and P0175 Fuel System Too Rich (Bank 2). O2 sensors replaced by new genuine ones, injectors changed by new ones, the oil pump set completelly replaced, MAF sensor replaced too, fuel pressure checked. The vehicle is a 2002 year FL (NAS specification) and 96 miles gone. Sometimes the mix goes to too lean in both banks too, so it was checked for vacuum leaks with a smoking machine and all is OK. I already don´t know how to solve this problem.

Probably a really stoopid question, but does your oil look ok?

bukko said:

Probably a really stoopid question, but does your oil look ok?

Click to expand...

You know, it looks some liquified and a little transparent, but has a very strong odor we feel even in the car.

We use a different ECU in the UK which doesn't use a MAF. Our V6 uses a MAP sensor instead. Apologies I'm not that up with the NAS spec version.
So you have changed the MAF, the injectors and O2 sensors and you still getting a rich MIL event. You say fuel pressure has been checked, do you know what it actually was? I can't see why the ECU isn't applying enough fuel trim. The only thing that can influence both banks is fuel pressure or an air leak. High fuel pressure could make the mixture rich, an air leak would lean the mixture. Can you get a reader on it and post up the short and long term fuel trim for both banks that the ECU is applying. It would be helpful to know what it's doing to correct the mixture ratio.

Nodge68 said:

We use a different ECU in the UK which doesn't use a MAF. Our V6 uses a MAP sensor instead. Apologies I'm not that up with the NAS spec version.
So you have changed the MAF, the injectors and O2 sensors and you still getting a rich MIL event. You say fuel pressure has been checked, do you know what it actually was? I can't see why the ECU isn't applying enough fuel trim. The only thing that can influence both banks is fuel pressure or an air leak. High fuel pressure could make the mixture rich, an air leak would lean the mixture. Can you get a reader on it and post up the short and long term fuel trim for both banks that the ECU is applying. It would be helpful to know what it's doing to correct the mixture ratio.

Click to expand...

Ok, I bought a code reader, I have some logs at home I will copy them later as I am not at home, but I will continue logging data. All the time I have written in both banks because it seems that it is something common for both and that's the case of air leak and fuel pressure. I can't tell you the pressure value, as all those works have been performed by the local authorized Land Rover Center and I do not have enough mechanics knowledge and background, also after all these problems I am understanding some processes in the car :-D. They have checked this twice and just refer to blow-by gases, but do no find a solution to the same problem, already two years on the same fighting.

----------------------------------------------------------------------------
|Code |"SHRTFT1 (%) "| "LONGFT1 (%) " | "SHRTFT2 (%) " | "LONGFT2 (%) " |
----------------------------------------------------------------------------
|P0171 | -7,8 | 10,2 | 7 | 9,4 |
----------------------------------------------------------------------------
|P0171,| -7,8 | 9,4 | 7 | 9,4 |
|P0174 | | | | |
----------------------------------------------------------------------------
|P0171,| -10,2 | 6,3 | 14,8 | 5,5 |
|P0174 | | | | |
----------------------------------------------------------------------------
|P0171 | 5,5 | 10,2 | 3,9 | 10,2 |
----------------------------------------------------------------------------
|P0171,| 7 | 11,7 | 4,7 | 10,9 |
|P0174 | | | | |
----------------------------------------------------------------------------
|P0171,| -0,8 | -11,7 | -3,9 | -12,5 |
|P0174 | | | | |
-----------------------------------------------------------------------------
|P0171,| -8,6 | -7,8 | -8,6 | -8,6 |
|P0174 | | | | |
-----------------------------------------------------------------------------
|P0171,| -3,9 | -9,4 | -1,6 | -10,9 |
|P0174 | | | | |
-----------------------------------------------------------------------------
|P0171,| -12,5 | -8,6 | -11,7 | -9,4 |
|P0174 | | | | |

Nodge68 said:

We use a different ECU in the UK which doesn't use a MAF. Our V6 uses a MAP sensor instead. Apologies I'm not that up with the NAS spec version.
So you have changed the MAF, the injectors and O2 sensors and you still getting a rich MIL event. You say fuel pressure has been checked, do you know what it actually was? I can't see why the ECU isn't applying enough fuel trim. The only thing that can influence both banks is fuel pressure or an air leak. High fuel pressure could make the mixture rich, an air leak would lean the mixture. Can you get a reader on it and post up the short and long term fuel trim for both banks that the ECU is applying. It would be helpful to know what it's doing to correct the mixture ratio.

Click to expand...

I have writen some of the data, but the table does not look very good.

Code SFT1(%) LFT1(%) SFT2(%) LFT2(%)
P0171 -7,8 10,2 7 9,4

P0171, -7,8 9,4 7 9,4
P0174

P0171, -10,2 6,3 14,8 5,5
P0174

P0171 5,5 10,2 3,9 10,2

P0171, 7 11,7 4,7 10,9
P0174

P0171, -0,8 -11,7 -3,9 -12,5
P0174

P0171, -8,6 -7,8 -8,6 -8,6
P0174

P0171, -3,9 -9,4 -1,6 -10,9
P0174

P0171, -12,5 -8,6 -11,7 -9,4
P0174

P0171, -12,5 -8,6 -11,7 -9,4
P0174

P0171, -3,1 -9,4 -3,9 -10,2
P0174

P0171, -6,3 -3,9 -10,9 -4,7
P0174

P0171, -10,9 -4,7 -10,2 -5,5
P0174

P0171, 18,8 4,7 16,4 3,9
P0174

P0171, 18,0 9,4 17,2 7
P0174

Nodge68 said:

We use a different ECU in the UK which doesn't use a MAF. Our V6 uses a MAP sensor instead. Apologies I'm not that up with the NAS spec version.
So you have changed the MAF, the injectors and O2 sensors and you still getting a rich MIL event. You say fuel pressure has been checked, do you know what it actually was? I can't see why the ECU isn't applying enough fuel trim. The only thing that can influence both banks is fuel pressure or an air leak. High fuel pressure could make the mixture rich, an air leak would lean the mixture. Can you get a reader on it and post up the short and long term fuel trim for both banks that the ECU is applying. It would be helpful to know what it's doing to correct the mixture ratio.

Click to expand...

I have tried twice, but the format is not the best. I hope you can see the short and long term fuel trims.

renald said:

I have tried twice, but the format is not the best. I hope you can see the short and long term fuel trims.

Click to expand...

Both short and long trim is all over the place. I'd expect to see figures up to 1.75 short and maybe 3.5 long term. So you have a problem that the ECU can't sort by its adaptive program.
Next is the hardest part, finding the cause.
I'll have a think about it and get back to you.

Nodge68 said:

Both short and long trim is all over the place. I'd expect to see figures up to 1.75 short and maybe 3.5 long term. So you have a problem that the ECU can't sort by its adaptive program.
Next is the hardest part, finding the cause.
I'll have a think about it and get back to you.

Click to expand...

Thanks one more time. Yes, to find the cause is being very hard. I hope you generate an idea. the trims are listed sequentially, but not for every time the SES lighted, as I did not wrote them all of the time, and in between there were different replacements and all the time the hope that the problem will be changed, but unfortunately it has not changed.