Positive crankcase pressure?
Posted: Tue Mar 27, 2012 7:40 pm
Hi all,
As promised in my hello post here is the first of what is sure to be lots of questions!
Secondly if this is a repost please forgive me, the laptop had a 'moment' when I clicked send originally and no idea if it went or not, either way I am sure the mods will put it right and dish out slapped wrists where appropriate! - Actually this version makes more sense!
Ok so I am looking for a new family estate/commuter/gear lugger and my first choice is a peugeot 406 probably in HDi flavor.
So today on route home I spotted one for sale, nice enough condition price is right and reasonable service history, 140k on it and last cam belt done at 98k. (Am planning on having to do one soon after purchase so no real issues there) Was a 02 reg 110 HDi estate.
However during my usual wander/nose/test drive of the car I noticed it looked like oil had been blowing out of the filler hole/under the filler cap, I took it off with the engine running and was greeted with some fairly significant pressure and a small puff of smoke (i think) at the moment I removed it pressure continued without any smoke and was noticably blowing out but not sucking in.. No smells other than the usual hot oil engine type smell but the pressure was significant enough to make refitting the cap need more concentration than expected, when I slipped with the cap trying to plop it on as normal it was blown clean off again. No blowing or sucking at all from the dipstick tube however.
So what am I likely looking at? (I have walked away for now but am willing to have a car needing some work as I am on a tight budget and even tighter timescale)
Is it liable to be blocked EGR or breathers or something more sinister like rings or valves?
Car drove fine from cold with no noticeable smoke from exhaust or dodgy noises. Biting point was a little high however.
Any info or pointers appreciated, like I said happy to stay walked away or equally go back for a second nose.. just wondering if my gut was correct or if these new fangled diesel things really are that different to anything I have played with before!
As promised in my hello post here is the first of what is sure to be lots of questions!
Secondly if this is a repost please forgive me, the laptop had a 'moment' when I clicked send originally and no idea if it went or not, either way I am sure the mods will put it right and dish out slapped wrists where appropriate! - Actually this version makes more sense!
Ok so I am looking for a new family estate/commuter/gear lugger and my first choice is a peugeot 406 probably in HDi flavor.
So today on route home I spotted one for sale, nice enough condition price is right and reasonable service history, 140k on it and last cam belt done at 98k. (Am planning on having to do one soon after purchase so no real issues there) Was a 02 reg 110 HDi estate.
However during my usual wander/nose/test drive of the car I noticed it looked like oil had been blowing out of the filler hole/under the filler cap, I took it off with the engine running and was greeted with some fairly significant pressure and a small puff of smoke (i think) at the moment I removed it pressure continued without any smoke and was noticably blowing out but not sucking in.. No smells other than the usual hot oil engine type smell but the pressure was significant enough to make refitting the cap need more concentration than expected, when I slipped with the cap trying to plop it on as normal it was blown clean off again. No blowing or sucking at all from the dipstick tube however.
So what am I likely looking at? (I have walked away for now but am willing to have a car needing some work as I am on a tight budget and even tighter timescale)
Is it liable to be blocked EGR or breathers or something more sinister like rings or valves?
Car drove fine from cold with no noticeable smoke from exhaust or dodgy noises. Biting point was a little high however.
Any info or pointers appreciated, like I said happy to stay walked away or equally go back for a second nose.. just wondering if my gut was correct or if these new fangled diesel things really are that different to anything I have played with before!