56 minutes ago, sepulchrave said:

 

Are you sure it's pressure and not a slight vacuum. Can you tell the difference.

 

Well I gave it 13hrs break overnight the other day and went out to check the header tank to quite a large release of air, more so than before the head gasket change I felt. So I took it 1/2 mile down the road to check the before mentioned turbo noises and left it over night again to today find that after 24hrs break there was still a small amount of gas/air which you might consider a 'vacuum'. After releasing this pressure i drove the car 1/2 mile again revving it a little from stone cold and immediately checked for air/gas and there was some. Surely the coolant won't have heated up that quickly in order to gain any pressure, so I'm thinking combustion gasses again. No loss of coolant though which is strange

1 hour ago, Tomjones1995 said:

 

Well I gave it 13hrs break overnight the other day and went out to check the header tank to quite a large release of air, more so than before the head gasket change I felt. So I took it 1/2 mile down the road to check the before mentioned turbo noises and left it over night again to today find that after 24hrs break there was still a small amount of gas/air which you might consider a 'vacuum'. After releasing this pressure i drove the car 1/2 mile again revving it a little from stone cold and immediately checked for air/gas and there was some. Surely the coolant won't have heated up that quickly in order to gain any pressure, so I'm thinking combustion gasses again. No loss of coolant though which is strange

 

It does sound suspicious, take the car for a hard drive then leave it overnight and check the coolant level and open the cap and check the level with the cap off. Post back with results.

24 minutes ago, sepulchrave said:

 

It does sound suspicious, take the car for a hard drive then leave it overnight and check the coolant level and open the cap and check the level with the cap off. Post back with results.

Okay will do, thanks

18 hours ago, sepulchrave said:

 

It does sound suspicious, take the car for a hard drive then leave it overnight and check the coolant level and open the cap and check the level with the cap off. Post back with results.

Okay so I took the car for a spirited drive last night keeping under 3000rpm though because I was told the HG needed to bed in. This morning there was again some air/gas and no coolant loss (checked level before and after cap opening). I videoed opening the cap so you could hear it as well.

 

 

Thanks

 

 

23 hours ago, sepulchrave said:

 

Are you sure it's pressure and not a slight vacuum. Can you tell the difference.

 

To try to check.....

1/ Note level in expansion tank.

2/ Crack the lid open.

3/ If there's a <pssst!> noise, has the level risen after opening (over-pressure in tank) or lowered (slight vacuum in tank)?

 

If there's a head/crack/HG issue of note, the expansion tank may appear empty until opened, then refill with an obvious release of gas pressure when opened.

2 hours ago, Tomjones1995 said:

Okay so I took the car for a spirited drive last night keeping under 3000rpm though because I was told the HG needed to bed in.

 

Utter nonsense, how can a HG 'bed-in'?

I'm concerned about the pressure release, it sounds like you still have HG issues, I wondered what would happen if only the bolts were replaced and you got a huge bill.

41 minutes ago, sepulchrave said:

 

Utter nonsense, how can a HG 'bed-in'?

I'm concerned about the pressure release, it sounds like you still have HG issues, I wondered what would happen if only the bolts were replaced and you got a huge bill.

I don't think he would of just replaced the bolts. The car was gone for nearly 2 weeks and he sent it off to an engineering place to be skimmed.

 

Okay I've just checked the coolant after driving into town today and car been parked for 2 hours and the coolant has dropped to below minimum upon releasing the pressure in the tank again it has only gone just above minimum so it hasn't returned to its original level that it had at the time of video this morning. It's still HG issues isn't it?

Edited 18 November, 20187 yr by Tomjones1995

1 hour ago, Tomjones1995 said:

I don't think he would of just replaced the bolts. The car was gone for nearly 2 weeks and he sent it off to an engineering place to be skimmed.

 

Okay I've just checked the coolant after driving into town today and car been parked for 2 hours and the coolant has dropped to below minimum upon releasing the pressure in the tank again it has only gone just above minimum so it hasn't returned to its original level that it had at the time of video this morning. It's still HG issues isn't it?

 

Yes.

 

I hope you have a proper receipt because then you have a guarantee, the 'bed-in' story is rubbish, it suggests they suspected the problem was not correctly resolved.

You may have to get an independent inspection, don't let them run the clock down wasting your time waiting for the gasket to 'bed-in'!

2 minutes ago, sepulchrave said:

 

Yes.

 

I hope you have a proper receipt because then you have a guarantee, the 'bed-in' story is rubbish, it suggests they suspected the problem was not correctly resolved.

You may have to get an independent inspection, don't let them run the clock down wasting your time waiting for the gasket to 'bed-in'!

 

I can't understand how it's failed again. I can see that it's a new HG because it was a 2 hole and now a 3 hole one so I know that's been done. Maybe the head bolts not torqued down enough? Or the engineering shop did a bad job on skimming it?

58 minutes ago, Tomjones1995 said:

 

I can't understand how it's failed again. I can see that it's a new HG because it was a 2 hole and now a 3 hole one so I know that's been done. Maybe the head bolts not torqued down enough? Or the engineering shop did a bad job on skimming it?

 

It is possible that the cylinder head is cracked and that the machine shop did not pressure test it before skimming it or that the crack only opens up when it's hot.

2 minutes ago, sepulchrave said:

 

It is possible that the cylinder head is cracked and that the machine shop did not pressure test it before skimming it or that the crack only opens up when it's hot.

 

Oh right okay. The garage did keep the car for a couple of days after doing the job and drove it around a little each day but I guess they didn't warm it up enough as I have. Thanks for the advice @sepulchrave and @vindaloo

Could be a few things....

1/ Block could be eroded around where there's previously been a HG failure.

2/ Same for the head.

3/ Head could cracked or warped.

4/ Some idiocy surrounding installing new head bolts.

 

The garage has a duty of care in diagnosing the problem and resolving it to your satisfaction. Despite the time and effort and expense, it's still not right.

 

J.

48 minutes ago, vindaloo said:

Could be a few things....

1/ Block could be eroded around where there's previously been a HG failure.

2/ Same for the head.

3/ Head could cracked or warped.

4/ Some idiocy surrounding installing new head bolts.

 

The garage has a duty of care in diagnosing the problem and resolving it to your satisfaction. Despite the time and effort and expense, it's still not right.

 

J.

 

It shouldn't be no2 if it's been skimmed should it? Probably either 1 or 3 I'm guessing. God knows how I'm going to pay for all this. Yes its still under guarantee I know but if the cylinder head is cracked or the block is eroded, it would of been like that before so that would probably be my expense I would think. I don't know how the guarantee could cover for that eventuality.

 

I don't know what engine or car the OP has , its not clear, however

 

Sorry to have to say this, but from previous forums I've been a member of in the past, 1.9 tdi engines, especially in the higher tuned PD forms and pushed to the limit frequently used to "micro crack" around the valves iirc and coolant loss occur but only when fully warmed up. Not something that was economically repairable I think.

 

So consider if you are wasting your time and money on this.

35 minutes ago, xman said:

I don't know what engine or car the OP has , its not clear, however

 

Sorry to have to say this, but from previous forums I've been a member of in the past, 1.9 tdi engines, especially in the higher tuned PD forms and pushed to the limit frequently used to "micro crack" around the valves iirc and coolant loss occur but only when fully warmed up. Not something that was economically repairable I think.

 

So consider if you are wasting your time and money on this.

 

The engine is the 1.9tdi PD130 BLT engine that they have in the fabia vrs. It is standard so if by 'higher tuned' you mean remapped then I would hope that this wouldn't be the case for me.

 

Thanks for the info

22 hours ago, sepulchrave said:

 

Utter nonsense, how can a HG 'bed-in'?

Well, it can't as such, but the last time I looked it was normal to re-torque the head bolts after about 1_000 miles.

9 minutes ago, KenONeill said:

Well, it can't as such, but the last time I looked it was normal to re-torque the head bolts after about 1_000 miles.

 

If they are stretch bolts they don't need to /can't be retorqued.

14 minutes ago, xman said:

 

If they are stretch bolts they don't need to /can't be retorqued.

OK, but I wasn't aware that they were stretch bolts.

Right, I've phoned the garage this morning and he reckons it's not necessarily a problem to have pressure in the header tank in the morning but has told me to get it sniffer tested elsewhere because he doesnt have one. Most garages dont seem to have a sniffer test and recommend a compression test. Would that work or not?

Just now, Tomjones1995 said:

Right, I've phoned the garage this morning and he reckons it's not necessarily a problem to have pressure in the header tank in the morning but has told me to get it sniffer tested elsewhere because he doesnt have one. Most garages dont seem to have a sniffer test and recommend a compression test. Would that work or not?

 

Coolant leaking into the combustion chamber may not show up with a compression test, more likely to show up with a sniffer test if over pressurising.

Is it a BLT or ASZ?

3 minutes ago, Tech1e said:

Is it a BLT or ASZ?

BLT thanks

2 minutes ago, Tomjones1995 said:

BLT thanks

 

Still running the EGR cooler?

4 minutes ago, Tech1e said:

 

Still running the EGR cooler?

Yeah everythings standard thanks

1 minute ago, Tomjones1995 said:

Yeah everythings standard thanks

 

Has that been tested?