Help pls Need advice

[Dave F]

I got my cylinder head gasket replaced last December, all went well apart from they said they had to helli coil the timing belt tensioner pin which at the time thought was strange but assured the job was good.

Well lo and behold it didn't hold  tensioner pin  helli coil failed, as the work was guaranteed back she went and have been told engine is a gonna and they admitted their fault.

As my engine had only done 97k how do I stand in regards to what engine they put in and any rights I have?

Thxs Dave

[johnnyroper]

As I was there fault I would want the engine they put in to be of equal standard as the one they cocked up.

[gregers]

as above,just make sure you get a warranty with the newish engine,for peace of mind.

[mike wilson]

Is there so little material that they can't bore it and insert a tapped bronze bush?  (I know you won't be keen on the original knuckle-draggers doing the work but any decent engineering workshop would be able to and it would be cheaper than a new engine.  Win win win.)

[Dave F]

Not to sure but did squeeze hand down top of cam and tensioner was just hanging on, waiting for them to phone back with mileage  and any other info about new engine.

[insanitybeard]

Is there so little material that they can't bore it and insert a tapped bronze bush?

Rightly or wrongly I'd assumed that the replacement engine was needed not because of the damaged thread but because the thread had failed with the engine running allowing the timing to go adrift and cause valve- piston contact and irreparable engine damage. I may have assumed wrong though!

Also, on the 1.9 PD engine the tensioner stud is actually threaded into the aluminium cylinder head and not the cast iron engine block as can be seen in the 10th image down here. The idler roller stud is however threaded into the cast iron engine block. Therefore if the engine hasn't gone bang and it's just down to a knackered tensioner stud thread then it'd actually only be the cylinder head that needed replacing.

[johnnyroper]

Rightly or wrongly I'd assumed that the replacement engine was needed not because of the damaged thread but because the thread had failed with the engine running allowing the timing to go adrift and cause valve- piston contact and irreparable engine damage. I may have assumed wrong though!

That was my assumption aswell,if the engine has survived and no valve damage has occurred then I would suggest the OP gets the garage to have thread damage assessed by engineering company as they would be able to do a proper repair to th threads rather than changing engine.

[mike wilson]

I assumed that, because destruction had not been mentioned, all was well in those stakes.  I'm quite curious as to how the stud _hole_ was knackered.  I can see that the nut might have rusted on and required replacement of the stud but to bugger the hole seems to require a special kind of window-licking skill.

[Dave F]

Have been back in touch with garage and that a new engine is indeed required, they have told me that the replacement engine will be of equal mileage and they will fit a new timing belt/water pump etc at their cost.

I am awaiting their phone call to confirm information on replacement engine so will keep you updated.

Thxs Dave

[Dave F]

Just a quick update, well it turned out to be a complete head change inc all new parts for timing belt which the garage covered all costs.

The actual part that failed was the Vibration Damper which they did not fit but because they didn't check it first time around they still footed the bill 

Taking it for a run today hopefully mpg is a little better.

[johnnyroper]

Glad it's all sorted and with no cost to yourself👍

[insanitybeard]

Not the first time that the hydraulic tensioners (by vibration damper I'm assuming you mean the hydraulic belt tensioner) have been mentioned for causing problems, I'd be interested to know though if it is a problem with the tensioners themselves or the technician doing the job not setting them up properly, even if the tensioner/ damper wasn't replaced by the garage when the belt was replaced after the original head gasket replacement it would still have had to have been set up by whoever did the job.