Hi all. In nearly 5 years ownership of these supposedly unreliable, always broken cars, I have my first issue. It's a 3.6 tdv8 and I'm getting the restricted performance error going up hill under acceleration as quite a few have.

I have already replaced the top intercooler hoses with silicone ones a few months ago as preventative maintenance and these are still fine. I've had the under trays off and the bottom 2 look fine.

This leads me to a cracked manifold on the driver's side. The bit I need some advice on is how to diagnose this DIY. I've tried soapy water when idling to no avail so that leaves me doing a smoke test. Has anyone done this? If so is it just a case of rubber glove over the inlet hose and smoke tube in through a cut off finger and hose clamp to create an air tight seal or something more complex?

Also I'm sure I saw a DIY machine set up on here but can't find it from searching so if anyone can assist with the post that would be a great help.

One final thought is I hadn't driven it for about 3 weeks and there was no issue before so it's just appeared out of the blue so could be a stuck actuator arm I suppose but have tried to see it but can't seem to locate it. Thanks for any help in advance. Current 2007 TDV8 Vogue Buckingham Blue

Or take it to an good independent LR specialist like JAS in York? Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
I use www.glenrands.co.uk Great independent specialist!
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Thanks for the recommendation. It's always good to have a reliable indy to fall back on.

I really want to sort it myself though for a sense of achievement or at least pinpoint the vacuum leak.

I've just tested the turbo actuator and it moves freely so pretty sure I can rule that out. Gave it a liberal spay of wd40 for good measure though. I think I can rule out everything underside I can see and touch myself for now so it's back to the top end. Current 2007 TDV8 Vogue Buckingham Blue

Green Oval in Leeds always get good feedback on here ?? G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.
https://www.fullfatrr.com/forum/topic56162...tty+affair

+1 for Green Oval  John
2008 Stornoway Grey 3.6 Tdv8 Vogue - SOLD
2005 TD6 Java Black Vogue - Written off!!
GAP iiD BT-Sold

Thanks I've used green oval in the past and they were pretty good.

In regards to the leak I've now located it. Needed a big longer with the soapy water to see it bubble up. It's on the top of the inlet manifold where they all seem to go from researching it. Will need to look at bonding it with some sikaflex or maybe q bond to seal it up. It's just a case of getting at it to make the repair. Current 2007 TDV8 Vogue Buckingham Blue

Hi KB, could either post a pic or describe where you found the split?
Thanks, Nick Previously a 2008MY Tonga Green Vogue SE 3.6 TDV8

Been away for a few days but will get some pics at the weekend hopefully  Current 2007 TDV8 Vogue Buckingham Blue

Hi Nick591 as requested I've attached some pics of the leak and the bubbles.

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Thanks KB. Very helpful. Need to have a proper look at mine now!
Cheers, Nick Previously a 2008MY Tonga Green Vogue SE 3.6 TDV8