Advice req'd V70 crankcase breathing

Advice req'd V70 crankcase breathing

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mojocvh

Original Poster:

16,837 posts

263 months

Tuesday 21st March 2006
quotequote all
Folks, need some advice.

I'm trying to find the location of crankcase oil breather on my 2.5 20v turbo, oil is being forced from under oil filler cap, luckily spotted oil drop on weekly check after LONG motorway run (3000 rpm max on cruise most of way) but need some info on whereabouts of breather line, components etc to see if it's blocked. No mayo inside cap, water OK.

Miles away from any (dealers) garage so am a bit stuck.

cheers

MoJo.

ILOVEVOLVO

1,832 posts

225 months

Friday 24th March 2006
quotequote all
Hi the crank case breather is under the inlet manifold the only way to get to it is to remove the manifold and change all breather parts its a very common problem.
Try running the engine up to temp and pull out the dipstick tube if it is smoking the breather is blocked.
It is worth trying a new oil cap seal as well.

Russ
www.tunedvolvos.co.uk

mojocvh

Original Poster:

16,837 posts

263 months

Friday 24th March 2006
quotequote all
Well thanks for the reply Russ.
The problem was an old hardened seal in the oil cap, have checked for pressure at the open oil filler there was none, topped her up and "made" a temp repair/seal of hysol, let it harden and refitted the cap. 374 miles overnight, oil level the same as after top up and NO leak past oil filler cap (the lands on top of the rocker cover were completly full of oil when I took the plastic cover off when I first noticed the problem)

Cheers

MoJo