So for a start, did another boost leak test yesterday, It still seams to be coming from the back at the top. got underneath it and the turbo's sound fine.

 

It appeared to be coming from this thing (red circle)

 

 

 

there was some oil around the bolt that was rippling in the breeze (from the boost leak I'm assuming) but no amount of soapy water was making any bubbles, although it was slightly muffling the sound when the rush was around it.

 

Tried tightening both sides which seemed to help a bit, but still didn't stop the leak.

 

Also I was wondering what the thing is the green arrow is pointing too?

 

 

after boxing it all backup after drove it home and it was all ok (or as it was), took it for a spirited drive last night to the cinema and was also fine, no change.

 

Then today making the most of the sunshine I took the roof off and took it for a drive to buy myself some fish (for a tank not to eat) seemed to be performing fine still, no different from any other time. When I pulled up at the shop and knocked it off I could hear a hissing sound from around the same area that the boost leak seemed to be coming from yesterday. But the engine was off, checked around for some leaks and couldn't find any. everything seemed dry around the area, although it was very hot.

 

Anyway thought I'll just have a look when I get back, so went and bought my fish, checked around the car for any signs of fluid before setting off none to be seen so off I went.

 

No more than a mile down the road I notice my temp gauge is getting dangerously close to the red. So I pulled over in a pub car park panicking, turned the engine off and popped the bonnet to let it cool. After about 15mins checked the gauge and it had dropped a lot, looked no higher than what I would normally expect after a drive, So I braved opening the radiator cap, and there wasn't any coolant to be seen, only wisps of steam.

 

I managed to get a jug of water from the pub, got a full jug in I think about 1 litre, and then got another half in after before it started overflowing, all the time I'm squeezing the radiator pipe to bring some bubbles out. left it for another 20mins or so while trying to fit as much water in as I could. The kitchen staff in the pub gave me a 2 litre bottle to take with me just incase and then I braved the drive home.

 

I didn't take it over 3 grand of revs the whole way home, and had the heaters on full wack, but the temp didn't seam to go above what I would normally expect.

 

And when I got home there was no hissing again.

 

It's been on the drive now for atleast an hour cooling while I've introduced my fish to the tank. going to go check the water level now and see if I can see anything suspect.

 

Anybody have any insight?

 

My guess for the hissing is probably a water pipe that we disturbed yesterday so I'm guna tighten some hose clips at the back. as for the boost leak though I've no idea, my mate thinks we should remove the plenum, ut I've got a feeling that could cause more problems than it'll fix.

It's that bad that it can't even build up pressure. Maybe 2bar at the most. It's leaking that much.

 

Actually tried tightening the two 10mm bolts on Saturday. I thought it made it sound a little quieter, but I could of just imagined it. If it has an o ring and it's perished I could get another from work no bother. I thought it would be a plennum off job. Will be chuffed to bits if it's not.

 

My idea was to get it remapped by noz, but thought it was pretty pointless with a massive boost leak. The negative pressure is definitely affected. I can see that from the gauge on tic over.

 

I'm assuming it wouldn't make any difference if I was doing the leak test with the ignition on or not?

 

2 bar! No wonder your seals are leaking, 5 psi is all you need as per the FSM. Or did you mean 2 psi?

Yes thats fine.

 

 

Jeff TT

 

Excellent, I'll hopefully give it a go at the weekend

 

2 bar! No wonder your seals are leaking, 5 psi is all you need as per the FSM. Or did you mean 2 psi?

 

Haha, yeah schoolboy error there, yeah 2 psi. but that was talking peak, it drops so quickly.

Ah ok that's quite a leak then.