Unwelcome(?) intruder

Francophile · 2nd October 2023, 17:17

Hello,

While resolving my starter troubles I observed this deposit in the air intake. It definitely has the appearance and feel of oil.

How, I ask myself, could oil get into the intake, against the airflow? The air filter element is not oily. The only answer that comes to mind is damage to an inlet valve or seat, but that doesn't feel reasonable.

Thoughts, anyone?

Derek

Teflon · 2nd October 2023, 17:21

It's oil, and perfectly normal - you'll find it in all KV6 air intakes

. I believe it's a by product of the crank case breather system.

Cliff

Francophile · 3rd October 2023, 10:59

Of course, it is collected vapours from the crankcase breather system. Why didn't I think of that?

Thank you, Teflon.

Teflon · 3rd October 2023, 11:58

You're welcome

Cliff

bl52krz · 3rd October 2023, 20:52

Another thing to check is the rubber connecting pipe from the air filter to the intake. This can become partly filled with oil in the bellows part (ridges) of this connection.Make sure the breather pipes are cleaned out, often.

Francophile · 4th October 2023, 17:52

Thank you, bl52krz, for your helpful advice.

I assume the small (30mm?) pipe above the air intake is a breather. If so, where are the others? More research beckons, to establish where 'they' are to be found.

Derek.

Rich in Vancouver · 6th October 2023, 00:12

If you remove the plastic cover from the top of the KV6 all will be revealed!

Francophile · 9th October 2023, 16:27

Apologies for a delayed 'thank you', Rich.

I shall be operating sub-bonnet in the next couple of days so that will be another item on my list.
Derek.

2nd October 2023, 17:21	#2
Teflon This is my second home Lagoon 2.0 V6 75 Conn SE Saloon Join Date: Nov 2006 Location: Chertsey Posts: 5,217 Thanks: 2,825 Thanked 2,920 Times in 1,570 Posts	It's oil, and perfectly normal - you'll find it in all KV6 air intakes . I believe it's a by product of the crank case breather system. Cliff __________________ No. 4 of 6

3rd October 2023, 11:58	#4
Teflon This is my second home Lagoon 2.0 V6 75 Conn SE Saloon Join Date: Nov 2006 Location: Chertsey Posts: 5,217 Thanks: 2,825 Thanked 2,920 Times in 1,570 Posts	You're welcome Cliff __________________ No. 4 of 6

3rd October 2023, 20:52	#5
bl52krz This is my second home Rover 75 cdt club + Rover 2.5 KV6 Conni SE Join Date: May 2008 Location: Birmingham Posts: 11,424 Thanks: 6,587 Thanked 2,262 Times in 1,729 Posts	Another thing to check is the rubber connecting pipe from the air filter to the intake. This can become partly filled with oil in the bellows part (ridges) of this connection.Make sure the breather pipes are cleaned out, often. __________________ Great Barr, Birmingham.

6th October 2023, 00:12	#7
Rich in Vancouver Gets stuck in MG ZT-T Join Date: Jun 2016 Location: White Rock, BC on Canada's Pacific Coast Posts: 863 Thanks: 338 Thanked 367 Times in 210 Posts	If you remove the plastic cover from the top of the KV6 all will be revealed! __________________ ZT-T190, Anthracite, LHD, Left the Line on June 24, 2002, Sold new in Switzerland, spent time in Germany, Imported to Canada in September 2021

3rd October 2023, 10:59	#3
Francophile Avid contributor Rover 75 2.0 V6 Connoisseur SE Saloon Join Date: Aug 2010 Location: Hassocks, West Sussex Posts: 197 Thanks: 51 Thanked 24 Times in 15 Posts	Of course, it is collected vapours from the crankcase breather system. Why didn't I think of that? Thank you, Teflon.

4th October 2023, 17:52	#6
Francophile Avid contributor Rover 75 2.0 V6 Connoisseur SE Saloon Join Date: Aug 2010 Location: Hassocks, West Sussex Posts: 197 Thanks: 51 Thanked 24 Times in 15 Posts	Thank you, bl52krz, for your helpful advice. I assume the small (30mm?) pipe above the air intake is a breather. If so, where are the others? More research beckons, to establish where 'they' are to be found. Derek.

9th October 2023, 16:27	#8
Francophile Avid contributor Rover 75 2.0 V6 Connoisseur SE Saloon Join Date: Aug 2010 Location: Hassocks, West Sussex Posts: 197 Thanks: 51 Thanked 24 Times in 15 Posts	Apologies for a delayed 'thank you', Rich. I shall be operating sub-bonnet in the next couple of days so that will be another item on my list. Derek.