very slight oil leak

colnet · May 30th, 2017, 12:26

Hi all, took off the top engine cover today and noticed a little bit of engine oil on top if the cylinder head, it was only a small amount and was around the middle 2 plugs (not in the plug well), near the filler cap and some sort of hose? Any ideas?
the engine us a B4204T2

regards

druid · May 30th, 2017, 13:27

Could it be the oil filler, they do fail there BUT its only a neoprene washer.

ww1dm1 · May 30th, 2017, 14:33

If you post up a photo of the exact location and amount of oil we could give our guesses.

The hose you are talking about is a PCV hose going under the valve cover. Very small amounts of oil should be going through it, so a leak would result in some misting only. A bad filler cap gasket could also mist some oil around, as druid mentioned.

colnet · May 30th, 2017, 15:02

Cheers people, I will try the oil filler neck gasket? Any how toos? or advice on how to check.

regards

ITSv40 · May 30th, 2017, 15:53

Fit a new filler cap gasket, they go hard with heat and time and do not seal properly. Should sort, if not then most likely the PCV hose - next to the filler cap- is leaking slightly. Most likely cause however is a clumsy spanner monkey spilling oil when filling.

colnet · May 30th, 2017, 18:19

Cheers itsv40 I think you may have cracked it.

regards

May 30th, 2017, 12:26	#1
colnet Senior Member Last Online: May 21st, 2024 18:43 Join Date: Mar 2017 Location: Aylesford, SarFeast	very slight oil leak Hi all, took off the top engine cover today and noticed a little bit of engine oil on top if the cylinder head, it was only a small amount and was around the middle 2 plugs (not in the plug well), near the filler cap and some sort of hose? Any ideas? the engine us a B4204T2 regards

May 30th, 2017, 13:27	#2
druid V40 Owner Last Online: Dec 13th, 2020 01:28 Join Date: Aug 2006 Location: Tonyrefail, Souh Wales. View Photos By: druid	Could it be the oil filler, they do fail there BUT its only a neoprene washer. __________________ *An MS Warior living one day at a time* "Neville" 207,000 so far. Water use 0 - oil negligible....

May 30th, 2017, 15:53	#5
ITSv40 VOC Member Last Online: Today 09:45 Join Date: Mar 2008 Location: Northampton	Fit a new filler cap gasket, they go hard with heat and time and do not seal properly. Should sort, if not then most likely the PCV hose - next to the filler cap- is leaking slightly. Most likely cause however is a clumsy spanner monkey spilling oil when filling. __________________ 2001 V40 2.0lt Sport Lux - Daily Driver. 178k miles. 2003 C70 2.4 GT Convertible - Garage Queen. 67k miles. http://www.neptuno6benagil.com

May 30th, 2017, 14:33	#3
ww1dm1 What is this I don't even Last Online: Aug 31st, 2017 08:01 Join Date: Mar 2015 Location: *	If you post up a photo of the exact location and amount of oil we could give our guesses. The hose you are talking about is a PCV hose going under the valve cover. Very small amounts of oil should be going through it, so a leak would result in some misting only. A bad filler cap gasket could also mist some oil around, as druid mentioned.

May 30th, 2017, 15:02	#4
colnet Senior Member Last Online: May 21st, 2024 18:43 Join Date: Mar 2017 Location: Aylesford, SarFeast	Cheers people, I will try the oil filler neck gasket? Any how toos? or advice on how to check. regards

May 30th, 2017, 18:19	#6
colnet Senior Member Last Online: May 21st, 2024 18:43 Join Date: Mar 2017 Location: Aylesford, SarFeast	Cheers itsv40 I think you may have cracked it. regards

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