The purge valve sits next to the SAI solenoid mounted on a bracket on the intake manifold. If there isn't a purge valve connected or there is short, you get an error code, because the ECU tests the resistance of the solenoid. If the purge valve is missing, just buy a new one. Some people here use purge valves for Hyundai, which are cheap (check the forum for part no). The hose can be improvised.

 

Found the purge valve and it's hoses. They were just tucked away between the engine and the firewall.
Plugged it in.
No error code from that anymore.

Had her idling for a few minutes and looking at the data on nanocom I noticed some misfires on cylinders 4 and 6.
I'll lift the upper intake just to make sure I have cylinder 4 and 6 injector wires connected correctly and not crossed.
These were the ones I was a bit quessing when plugging in, should have taken the time to sit and look at the wiring diagram and the colours.
Great thing is that all the injector input wires are almost the same colour..

 

That engine serial is a bit strange.

https://rimmerbros.com/c/Rover-V8-Engine-Numbers

 

I appreciated this post as it seems I am following up on the same stuff you’re doing. Heads are off, machined, tested, and approved to be put on. Before that I am popping the pan and front cover off to do some clean up and redo the gaskets.

All that SAI stuff you were showing was helpful for me from the looks of your SAI Pump has the vacuum canister bracket right side up I am pretty sure my secondary air vacuum canister is upside down.

I am about to do my throttle cable and cruise control cable would you mind taking a picture of your current throttle body gapping?

 

I have an 04 as well.

This info may be too late now, but…

when I did my hg at 180k it was because I broke a valve spring. Previous to that event, I had intermittent misfires. From what my machinist and I determined was the weakened valve spring. When he did the heads, I had him install all new valves, springs, and seals. I then re assembled and all has been good for @60k so far.

I used tty bolts too and they worked for me. Studs are not required, but they are better.

on injector harness: it’s pretty hard to mess up the plugs on them I think because if you just pay they harness down you should be able to see the length difference in the wires. Does that make sense?

on SAI deleted: are you saying that now that you plugged in the solenoid, you have no SAI faults? Cause I have to blanking plugs on my bench rn….😎

 

On your misfire

you can swap the cyl 6 and 4 injectors to other cylinders in order to check for bad injectors. Just make sure you fully seat the injectors or you’ll have a big vacuum leak. Ask me how I know lol

 

Thanks!
That's one reason I post these thoughts etc of mine around, if there is some help at some point for anyone, they serve a great purpose.
I know I've read a lot of similiar posts around and they have helped me.

If I understand what You are asking, I had the gap for the throttle cable on the throttlebody se to zero, and the cruise has a gap of ~2mm.
But still hace plenty of empty travel on throttle pedal, as that rubber grommet on the pedal end ofg the cable compresses a lot!
And I need to get yet another new cable as the clips retaining it to the pedal brolke when I tried gettin it clipped on there.

Also had to show the knife for the grommet to the firewall, as it had a lot narrower gap for the firewall, so I couldn't twist it to place.

 

Oh yeah, it does, just as mine had all the plastic tube/tapes etc disintegrated on the injector loom and I taped them up. The 4+6 and 3+5 injectors are so close to each other so I thought I messed the order up.

Well purge valve errors are now gone. Never had any SAI errors.
Some previous owner had removed the SAI system, and the ECU is a NNN100640.
According to the JLR classic parts it's a non SAI ECU, but also a replacement for the SAI ECU...
https://parts.jaguarlandroverclassic...nd/land-rover/

Will have to see about this, or be more extreme and swap 4 -> 3 and 6 -> 5 in example.
Too bad that upper intake is a bit of a chore to take off.

 

Had a small burst of motivation, in between sunshine, snowing, sunshine, hails etc. A nice + 7 celcius at the moment.

Took the upper intake off to see if I messed the cylinder 4 and 6 injector cables.
No I did not, they were put on correct.

So, the next step might just be that switching injectors around.
And replace the o rings on them, as I think I already have new ones I got from Rockauto waiting.

Somewehre I've read about compression and pressure lost(?) tests, but have no tools for those and never have done those.

But mehh, I'm getting a bit bummed, having issues on both D2's at the moment...
Theres a LR Experience offroad day coming up on the 11th and I really want to be there driving. They do not allow people to go there on their own, and our club days are the only ones they allow peoples own vehicles used there.

 

Well, put new injector seals in and swapped injector 4 and 6 to 3 and 5.
All put back together, cleaning a whole load of tools etc from the enginebay and surroundings.

Backed it out of the tent, rinsed all the pollen off it and a small drive.

All is well. I'm just not used to an automatic, it's been a "while" (20 years or so), my last automatic was a -98 Volvo V70 20v 2.5, before that a -91 Hyundai Sonata with a 3 liter V6.

It seems to rev around 3000rpm before going for second, then the rest will shortly follow. Did not have the sport mode on.
Will take it to a shop at somepoint for a gearbox flush etc.

Now I've driven it some ~10km++ up to 90km/h, and all seems good.

There are very random misfires on cylinder 1 now, but not enough to make an error code and light the MIL lamp.

Need to think about the exhaust, the center silencer or this straight pipe that I now have.
It's a V8, it needs to sound like one, not a like blender with a ton of silencers... But there are a lot of noise in the cabin.
It will change tho, I will apply a ton of silencing material to it at some point.

Oh BOY!

Next on the list.. well.. that list is LONG for all the smaller things to sort out.
One of the biggest ones may be the headliner.
Ordered 15 meters of black fabric for Betty and Bogeyman (and for other general tom foolery) from Matrtim in the UK.