Porsche Bleed nipple seized - Page 2 - Porsche General - PistonHeads UK

Folks, My Cayenne T is in for its service. The engineer has changed the brake oil in 3 of the 4 corners. OPC called and said the following, "the bleed nipple that may snap if we attempt to carry out the brake fluid change on this wheel". They would need to send it away at a cost of £500 if it needs to be fixed if snapped or £1300 to replace the calliper. He said they can leave it to the next service i.e. dont do an oil change on it. Surely not addressing the seized nipple for 2 years is just going to make it worse. Supposedly dirt, grime and rust has seized it and it is quiet common for this to happen. The service rep sent me a picture of another porsche to show what he is talking about. This is not my nipple! I am lost here. What do you folks recommend

They are correct in what they are saying. At main dealer rates (of what £200 an hour these days), remove caliper, extract nipple, refit caliper probably is a 500 quid job.

Recently I had a quote from an Indy for 300+VAT to strip, paint and replace seals/bleed nipple per caliper. New calipers are around 550-600 I think if you buy them yourself.

It depends how bad it is. If they haven't messed with it yet, I'd take it to someone who can try heat (an induction heater is what I'd use) and penertrating oil to get it loose, on the understanding that it may well shear and need the caliper removing to be drilled out, though that would be a straightforward task for a small engineering place. I'd rather have it jigged up straight and do it on a pillar drill etc than try it freehand on the car. Either way, the prices you've been given are ludicrous for the task. Go somewhere else.

Any reasonably talented fitter could sort that. Have you any farmer friends - they’d definitely know someone!

My indy popped my 997 one around to engineering shop next door and new thread and insert was £160

A Porsche specialist snapped one on my car during a service last year and charged me about £110 to extract and replace it.

DRH986 said: A Porsche specialist snapped one on my car during a service last year and charged me about £110 to extract and replace it. Decent price... I suspect that isnt a london price.

I’d be regularly soaking / spraying it with penetrating oil for a couple of weeks beforehand, either to book it in somewhere and give them the best chance, or do it myself with a load of heat and light use of an impact wrench.

Try giving it a slight tighten first with a 1/4" drive long reach socket (any bigger and you loose the feel) this may break the corrosion in the threads, if you get a bit movement gently work it (slacken then tighten) and use some penetrating fluid, take your time and it'll come out.

okay, might give it a go. If it snaps I suspect the car will not be drivable right? Do I need to then call a mobile mechanic to remove the part so I can send it to a repair shop.

Cimaguy said: okay, might give it a go. If it snaps I suspect the car will not be drivable right? Do I need to then call a mobile mechanic to remove the part so I can send it to a repair shop. That would depend on if you managed to loosen/rotate it before it shears. If it snaps off without moving at all, it should be safe to drive providing the nipple breaks off flush with the caliper body.

I had this on an R8 , got it out but the thread was damaged. BiggRedd sorted it with a helicoil for 60 quid ish I changed all the nipples for titanium ones

How about getting some heat into the callipers … repeated big stops or just leave outside tomorrow … then spaying the nipple with this … JENOLITE Fast Release Freeze Spray before giving it a twist?

Better still this … Arctic Hayes https://amzn.eu/d/gl9a9To One review cites using it to free his nipple.

This is the sort of job that any garage that does MOT work will have come across a hundred times. Back in my day it would have been warmed up with an oxy-acetylene torch and carefully removed. Nowadays an induction heater will warm it up, may need a couple of goes but it will come out. If it was really corroded in, the threads may come out with the screw but a timesert repair would fix it. Should take less than an hour to remove replace and bleed.

When was the fluid last changed?

996Keef said: I had this on an R8 , got it out but the thread was damaged. BiggRedd sorted it with a helicoil for 60 quid ish I changed all the nipples for titanium ones Or stainless steel nipples are also worth a shout

I don't know how old your Cayenne is, but my 7 year old Audi had this issue and the main dealer said it was their issue to sort, as it should not have happened. Just a thought...

JohnnyUK said: I don't know how old your Cayenne is, but my 7 year old Audi had this issue and the main dealer said it was their issue to sort, as it should not have happened. Just a thought... A very good thought and well done Audi. The Cayenne T hasn’t been around for very long has it. Is this the 2 year service? ..in which case, should the manufacturer have supplied a part suitable for lasting longer than the manufacturers warranty. It is really annoying that Porsche let themselves down with these niggly little issues.

Cimaguy said: DRH986 said: A Porsche specialist snapped one on my car during a service last year and charged me about £110 to extract and replace it. Decent price... I suspect that isnt a london price. It was Cameron Sports Cars north of Bath.