CUNA Headgasket 2015 Leon 184 TDI

[Tomevans1000]

I have a 2015 Seat Leon Fr TDI 2.0 TDI CUNA engine code

Hello there I have recently had some pressurisation of the cooling system causing a 1.6 bar rated cap to break and coolant to be released from the system. I managed to get the car switched off before the system had fully drained and ran hot. I have taken it to a garage who have diagnosed the issue as early headgasket failure. The quote I have received is £2750 including vat all in for the Parts £690+vat and Labour £1600+vat.

The garage is local to me and have done work in the past for me with no issues so they are ideal but I am just wondering if anyone has had this work or similar carried out recently and how much you paid.

Any advice welcomed. Thanks in advance.

 

[SuperV8]

I have had a cap with weak spring which would let go at something like half its rated 1.6 bar pressure, and also a cap with a crap oring which again would leak.
Also there is the very common heater matrix problem which locally boils the coolant which gets released out the cap so you go from full to empty tank after a DPF regen.
How did they confirm it is a 'early' headgasket failure?
What parts are they quoting to change - as that seems a lot for parts?

 

[Tomevans1000]

I have had a cap with weak spring which would let go at something like half its rated 1.6 bar pressure, and also a cap with a crap oring which again would leak.
Also there is the very common heater matrix problem which locally boils the coolant which gets released out the cap so you go from full to empty tank after a DPF regen.
How did they confirm it is a 'early' headgasket failure?
What parts are they quoting to change - as that seems a lot for parts?

I’m just awaiting the response on parts but they had found combustion gases in the coolant causing pressurisation. With them stating it is likely the head gasket rather than egr cooler due to the pressure being higher than the egr flow. I have had multiple new 1.6 bar caps and bottles fail aswell.

 

[Tomevans1000]

This is the parts list.
Head Gasket
Head Bolts
Head Bolt Washers
Rocker Cover Gasket
Inlet Manifold Gasket
Exhaust Manifold Gasket
Timing belt and water pump
Auxiliary belt
Oil + Filter
Antifreeze
Turbo return gasket
Injector seals
Injector O ring seals
Injector clamp bolts
Leak off hose

 

[SuperV8]

Fair enough, head bolts are £11.60 - x10! so nearly £120!
Leak off hose is expensive, around £100 - and not always needed (unless it breaks on removal), just new o-rings.
Head bolt washers - are £20, not sure I see the reason for changing these.

Ensure they check the head is level and check for cracks.
Probably be wise to also add a new thermostat.

 

[Tomevans1000]

Yeah they’ve mentioned the head will be sent off for pressure test and skimming.

They charge £80 + vat for labour so the labour total being 20 hours is that something you would say is realistic. No worries if dont know.

I’ve recently had a new cambelt water pump with them also so not sure if need doing again.

 

[SuperV8]

20h seems generous (unless they are also including rebuilding/testing the head in that?), for head gasket my data shows:
Renew the cylinder head gasket Manual transmission, EURO 6, Front-wheel drive: 9.10h

If it was me, I would reuse the coolant pump and belt if very new, with a new stud/nut for the tensioner.

EGR coolers can cause combustion gasses to appear in your coolant. Have they tested/ruled out EGR problem?

 

[Tomevans1000]

Yeah so it looks like 20h is for the removal and refitting of the cylinder head and all other components. Then the pressure test, skim and replacing of any parts would be additional so looks like it’s on the high side.

In terms of the egr cooler they have said:

If the EGR cooler had failed you would be getting steam through the exhaust rather than pressure within the cooling system
The pressure within the cooling system is greater than the EGR flow which causes the coolant to enter the exhaust system rather than the exhaust gases entering the cooling system

So they have diagnosed it to be head gasket specific.

 

[MarkDH]

Yeah so it looks like 20h is for the removal and refitting of the cylinder head and all other components. Then the pressure test, skim and replacing of any parts would be additional so looks like it’s on the high side.

In terms of the egr cooler they have said:

If the EGR cooler had failed you would be getting steam through the exhaust rather than pressure within the cooling system
The pressure within the cooling system is greater than the EGR flow which causes the coolant to enter the exhaust system rather than the exhaust gases entering the cooling system

So they have diagnosed it to be head gasket specific.

Aren't the belt & water pump still under guarantee?

 

[Tomevans1000]

Not too sure but i’ve decided not to move forward with this garage and have found a cheaper and better option in a different garage.

Cheers for the advice.