New Ford Figo 1.5D Engine Oil Leak: Cause & Solution?

[stingray91]

Hi , if it's a major issue oil level will drop drastically, even if to solve the doubt we can examine the turbo compressor turbine for any shake by fingers just by opening that boot, this engine is a very basic 8v sohc , with fixed G turbo. So nothing to worry much , please find the attached pics for where the hose from head coming to the turbo inlet., There is no valve for that, and as there is a turbo intake directly linked to the head , it will always keep the block in negative pressure and boost the block combustion area, so all the soots are getting to the intake again' .

In my opinion it's just the vapour connector leak or boot or the clamp is leaking. It's all fine to my observations.
Please use fully synthetic oil to avoid these vapour . Using part Synth 5w40 will cause these.

 

[Suryaputhra]

@stingray91

Engine oil can not be condensed, once oil sprayed in the cylinder the oil return grooves in the oil rings felicitates the return path to oil chamber.

Once engine oil burnt that's it, EGR and crankcase depression regulator valves take care of un burnt fuel gases to recirculate and make sure to burn again they also plays important role in reducing emissions like NOx

-suryaputhra

 

[stingray91]

@stingray91

Engine oil can not be condensed, once oil sprayed in the cylinder the oil return grooves in the oil rings felicitates the return path to oil chamber.

Once engine oil burnt that's it, EGR and crankcase depression regulator valves take care of un burnt fuel gases to recirculate and make sure to burn again they also plays important role in reducing emissions like NOx

-suryaputhra

For your Knowledge, please find usefull

Crankcase Ventilation
In combustion engines, pressure differentials
between the combustion chamber and the crankcase
generate air fl ow between piston rings and cylinder
barrel, which are referred to as blow-by gases. These
oily gases are returned to the intake area through the
crankcase ventilation system to prevent pollution.
Effective oil separation keeps engine oil in the
crankcase and prevents it from entering the intake
manifold. This multistage system separates more oil
than a single-stage system.

The oil separation is effected in three stages:
Coarse separation
Fine separation
Damping section


The crankcase ventilation components, the oil fi ller
inlet, and the pressure reservoir for the vacuum
system of the engine are all integrated in the cylinder
head cover.
Coarse Separation
The blow-by gases move from the crankshaft and
camshaft chamber into a stabilizing section, which is
integrated in the cylinder head cover. In this section,
the larger oil droplets are separated onto the walls
and collect on the floor. The oil can drip into the
cylinder head through the openings in the stabilizing
section.

Fine Separation
The fine separation takes place over a cyclone
separator consisting of a total of four cyclones.
Depending on the amount of the pressure differential
between the intake manifold and the crankcase, two
or four cyclones are activated by spring steel fl utter
valves.
Due to the geometry of the cyclones, the air is set
into a rotating motion. The resulting centrifugal force
slings the oil mist onto the separator wall. The oil
droplets are deposited on the wall of the cyclone and
are captured in a collector section.
When the engine is OFF, a fl utter valve opens. This
valve closes during engine operation due to the
increased pressure in the cylinder head. The sole
purpose of this valve is to let oil drain back into the
engine sump when the engine is OFF.

you can find this condensation segment on the head cover in picture of tdci which i have attached before

VW TDI ENGINE

 

[vishnu vichu]

This sums up my strategy for combating the issue for now. In addition, I will also try running the car more often to make sure
the problem stays eliminated.

So , Did you get the car back ? Any further updates with the issue?

 

[Suryaputhra]

@stingray91 That's the oil in the diagram not oil vapour. More over in your previus post you mentioned EVAP I am not sure diesel engines uses EVAP.

-suryaputhra

 

[stingray91]

@stingray91 That's the oil in the diagram not oil vapour. More over in your previus post you mentioned EVAP I am not sure diesel engines uses EVAP.

-suryaputhra

yes i agree that i mentioned EVAP system , we usually use this term via our engineers , as it states Evaporative Emission control system.

its commonly used in petrol engines where vapors are condensed back and sent to intake ,also Oil vapour recirculation system pipe joins via this as a norm of controlling emission , lets not go deep into those, we use different terms and different abbreviations according to different make

and oil will vapor and its not (gas) , the term gas can be used for lpg, helium , hydrogen etc .

there is a lot of difference between gas and vapor.

different engines uses different systems to condense these oil vapors, yes its mentioned oil in the diagram, but its the oil collector funnel , where condensed vapors are collected and dripped back to head , only vapors which cant be condensed are sent back to intake in this cleaver VW tdi Design, where mjd , ddis use oil seperator or collector( just different terms used for different brand.

oily gases or vapor is what i mentioned. which can be condensed, yes all gases can be condensed when its collected to a certain temperature differentials.

as you stated if oil gets vapor it cant be condensed back, its false , anything boils and forms vapor can be condensed at certain temperature, only hydrocarbons which splits from the vapor when it passes high temperature turbo gets condensed in the inter cooler , even if not so , passes to intake and gets burned and oxidized in the cat.
CxH2x+2 + [(3x+1)/2] O2 → x CO2 + (x+1) H2O.

And as you mentioned these vapour or gas contain unburned fuel too, also oil vapors .

 

[Suryaputhra]

Cracked type 3 hydrocarbons engine oils can not be condensed back as normal usable engine oil back once used full burnt or half burnt, even so the additives and detegents in the oil only can only be condensed plus water, moisture is burnt again in the cycle.

Oil mist can be condensed back as usable engine oil as you mentained in your earlier posts by cyclonic seperatros, baffle and centrigugal vanes same thechnology is used in venturi scrubbers in industrial operatations but as you said in your post "stand also a thin layer of oil is burned in this process" can not be recovered.

The misunderstanding is wording engine oil vapour and engine oil mist.

-suryaputhra

 

[stingray91]

Cracked type 3 hydrocarbons engine oils can not be condensed back as normal usable engine oil back once used full burnt or half burnt, even so the additives and detegents in the oil only can only be condensed plus water, moisture is burnt again in the cycle.

Oil mist can be condensed back as usable engine oil as you mentained in your earlier posts by cyclonic seperatros, baffle and centrigugal vanes same thechnology is used in venturi scrubbers in industrial operatations but as you said in your post "stand also a thin layer of oil is burned in this process" can not be recovered.

The misunderstanding is wording engine oil vapour and engine oil mist.

-suryaputhra

yes, the purpose of this circulation is for burning these hydro carbons , if you note closely older engines late 2000 or even back , dont use these techniques because the emission standards where not percent at those days , but even so oil mist as you termed it , was sent directly to intake but oil levels dont drastically get reduced , because of low engine heat points and bigger block , naturally aspirated kinda engines , but for modern high compression and high rpm engines have high temperature points where low grade oils breakdown and vaporize, only synth oils with additives seems to withstand those , thats why manufacturer recommends those synth oils, i also heard that in many service centers they use semi synth bought in bulks and mention as synth oil has been replaced, for 15k kms service intervel seems lot for these engines especially on Indian temperatures and stop go traffic.
whats your view on that? i always change oil when its level starts decreasing , happens 11k to 12k on my Tdi . depending on my highway or city useage.

 

[Suryaputhra]

@stingray91 Yes I agree with you

"They use semi synth bought in bulks and mention as synth oil has been replaced, for 15k kms service intervel seems lot for these engines especially on Indian temperatures and stop go traffic. " yes your opinion is correct

"I always change oil when its level starts decreasing , happens 11k to 12k on my Tdi . depending on my highway or city useage." you are correct even I follow the same.

Positive crankcase ventilation was first introduced on 1961 for petrol engines

Exhaust gas recirculation for disels intruduced in 1962 but matured in 1973 but some turbo disels engines like the TDI still uses crankcase breather along with filter mesh because EGR alone cannot acomplish the intended task.

http://www.theautomotiveindia.com/f...-sangria-red-ownership-review.html#post478556

-suryaputhra

 

[Suryaputhra]

TDI still uses crankcase breather along with filter mesh because EGR alone cannot accomplish the intended task. This is called in proper way CCV system plus EGR.

-suryaputhra

 

[TSIVipul]

Buoys, we all agree that you both have immense mechanical knowledge. Can we get back to that old and humble hose leak again? BTW I have such leakage signs in my Polo petrol too, but not bothered as of now as I find minor leakages as a bit normal.

@Commuter
What's the update as of now?

 

[Commuter]

Thank you ALL for your fresh inputs. Yes I do agree that the is a possibility of a dry coat of oil-condensed-sooth on the engine bay. It is similar to the dry,dusty-yet-oily coating on old compressors used for drawing water from borewell to overhead tanks. It can be noticed on old cycles lubricated with too much oil too. There is a coating of dry-yet-oily dust on other parts too and I wasn't very concerned about them.

As 1989rs500 is pointing out, this leakage is not a dry and dusty one springing from condensed oil, a leak which lacks a specific point of origin. This leak has a specific point of origin and is severe enough to drip, again unlike a harmless soot settled over condensed oil.

And regarding the driving style, yes if a person maintains unnaturally low revs on all gears for the sake of FE and lets the engine coughing and refusing to pick up speed in proportion to the car's potential, then he is bound to suffer from premature wear on the engine. But, in my case,I do use low throttle inputs but I shift often to keep the engine in the free revving zone. I never use top gear in city. My comfortable speed for gears is around 50kph in fourth and shifting to sixth only if I have to cross 60kph. I used the free revving method of keeping the engine comfortable in my Dad's petrol Indica and used enough throttle to keep it in a rev-band where it is at lowest speed while still being able to spring forward rather than hunker down coughing and forcing a downshift. I use the same method here with the Ford Figo 1.5 but this engine is powerful and is capable of being at those meaty power band with mere throttle dabs with absolutely no need to floor the pedal or give a health stomp in any sane scenario to pick up speed.

Thanks for making me clarify on these points.

Update: Part delivery delayed, car set to be delivered on monday. Not bothered. Thankful that the issue getting attended to.

 

[Suryaputhra]

@TSIVipul OK OK ya we are already back to point, please post photo of exact location of leak.

-suryaputhra

 

[Commuter]

This is another close up i took before I left it at the Ford center.

 

[stingray91]

This is another close up i took before I left it at the Ford center.

i can see the gap between the boot. ask them to clean it and re fit well, see problem solves.