Technical Blowing through the oil filler.

[Rustbucket]

Go the B back today from a different garage after a service. Alfa / Lancia specialist in Dublin. Garage said its ok apart from one big problem.

Engine is blowing back hard through the oil filler cap with a strong chuffing sound and a fine mist of oil with it. Garage guy thinks I've been 'thrashing the balls off it' his words and have buggered the valves! They want it back for a strip down and estimate.

Car's been well looked after by 2 owners. Has 38k miles on and been treated well by me and the previous owner. Goes fine, doesn't use any oil, doesn't overheat and does about 30mpg driven normally.

Anybody any ideas what the fault could be before I let them tear it down?

 

[ricky952]

Mine does the same with a good splash back of oil , i hope this is normal as mine drives a dream,as you say 30 plus to the gallon and never misses a beat

 

[LittleRedB]

It's typical of a tohc engine, mine does the same - in fact if you give it a gentle tap on the throttle with the filler cap off you get a face full of oil!!

I am a bit surprised on their diagnosis if they are a specialist!

 

[Rustbucket]

Thanks. Ask and the experts will advise! Curious 'cos non of my previous 3 Fiats did it..The mighty 1.2 Stilo (knicker elastic edition) or the Coupes...

 

[ROJ]

If you twist the cap but not release it when engine is on you can feel a kind of suction force applied on it... I guess you tighten the cap well & end of story..

 

[LittleRedB]

The old FORD V4 engine would not run without the oil filler cap securely in place.......my father in law used to work for Ford 'back in the day' and they had endless issues with people topping up their oil and not putting the cap on properly resulting in the car not starting, or starting and running like a 3 legged horse!

 

[dave]

run forte engine flush for 2 weeks, then clean out crank case ventilation system and then change oil

 

[LittleRedB]

It will still blow!!

 

[BILL33]

Does our cars have a pcv valve? http://en.wikipedia.org/wiki/PCV_valve
Maybe it is closed?

 

[Alan.D]

Thanks. Ask and the experts will advise! Curious 'cos non of my previous 3 Fiats did it..The mighty 1.2 Stilo (knicker elastic edition) or the Coupes...

They have a metal plate under the filler cover inside so more difficult to blow up through the open hole.

I'm very supprised by what they said as almost every car I've had that's been OHC with the filler on top has done this. If you open the filler cap while the engine is running the cams are rotating so throw the oil all over the place, so almost inevitable that you will get covered in oil with the cap off

 

[Rustbucket]

Thanks. One more garage to avoid..also some of their 'throw away' comments after the event..'Good little car these..based on the old Tipo, we see lots of them'.

No it isn't, no you don't. There are only a handful of B's in Ireland. I've only ever seen 1 other on the road.

 

[BILL33]

Thanks. One more garage to avoid..also some of their 'throw away' comments after the event..'Good little car these..based on the old Tipo, we see lots of them'.

No it isn't, no you don't. There are only a handful of B's in Ireland. I've only ever seen 1 other on the road.

and they are not based on the old Tipo(like there is a new Tipo) but in the Punto Mk1.

 

[LittleRedB]

and they are not based on the old Tipo(like there is a new Tipo) but in the Punto Mk1.

With the floorpan being widened and lengthened by a couple of inches!!

 

[Robot]

Speaking of Puntos....:yum::yum:

 

[Alan.D]

Daughter had one but didn't last long, people kept running into it.....maybe they hated the colour?

 

[BILL33]

Speaking of Puntos....:yum::yum:

Thats my HGT