[SaVAGeSoot]

Crank RPM seems low.
Post full autoscan pre and post cranking.
Log rail pressure on crank.

Did you check the engine for good compression?

 

[SaVAGeSoot]

Reprogrammed new injectors with VCDS. Any way to confirm this?

[Select]
[01 - Engine]

[Adaptation - 10]
Channel 071: IMA-ISA Value for Cylinder 1 
Channel 072: IMA-ISA Value for Cylinder 2 
Channel 073: IMA-ISA Value for Cylinder 3 
Channel 074: IMA-ISA Value for Cylinder 4
Channel 075: IMA-ISA Value for Cylinder 5
Channel 076: IMA-ISA Value for Cylinder 6

I believe you should see a Read button and there should be two fields.... stored value and new value or something along those lines.

 

[SaVAGeSoot]

Quit using starting fluid unless you really like replacing engines!
On most TDIs, if you don't get sufficient cranking rpm, the ECU doesn't even fire the injectors.
Going off the top of my head, you need a minimum 295rpm.
You can't even attempt to troubleshoot a Touareg with a weak battery!
Get a strong charger on it... not a little battery maintainer... you need something with guts.... service manual calls for some ridiculous 70A charger spec even when attempting to do module flashes and stuff that's "electrics" only.

 

[SaVAGeSoot]

When I look at fuel rail pressure on the vcds during cranking it caps at 10200hpa, about 150psi

This isn't anywhere close to where it needs to be!
You can look here for values I shared off mine a few weeks ago when trying to help another member out to see just how far you are from where you need to be.

Slight Engine Vibration and Injector Values

I have a slight engine vibration that appears to change with engine speed. It is present when the engine is at idle. It is felt through the steering wheel, pedals and floor. Local Indy could not feel it. VCDS for Injectors and high press fuel rail. When I shut the engine down the high pressure...

www.clubtouareg.com

 

[SaVAGeSoot]

 

[SaVAGeSoot]

I feel like we need to start over.
Why did you load another engine into the parts cannon if you didn't confirm that the original HPFP was toast?
If it was toast indeed, what caused the failure?
Did you flush out the lines\tank\system prior to dropping in replacement engine?

 

[SaVAGeSoot]

OK, so since you've already been in the tank and replaced the transfer pump, you need the manual and need to check for pressure getting to the fuel filter canister, and then for flow from the canister\filter to the HPFP. If you're starving it for whatever reason, you will quickly kill this other HPFP as well.

 

[SaVAGeSoot]

Fuel should be flowing to the pump

Then your HPFP is junk since you don't have any rail pressure as per above!

 

[SaVAGeSoot]

If the injectors are dumping fuel, you should've hydro-locked by now....
If the N276 has failed, it would certainly throw codes (you already said no codes) and it would make the engine not start because rail pressure can't be built up for proper injector firing.

 

[SaVAGeSoot]

Why don't you just post up a full autoscan after your attempted starts to show that there's no codes as I find that very hard to accept.

 

[SaVAGeSoot]

Full autoscan before any logs.
Let's get a baseline.

 

[SaVAGeSoot]

Can you attempt to clear the fault in 05? Does it come back right away with only a key cycle?

 

[SaVAGeSoot]

I'm not sure but I don't like seeing a code under that module. Does the cluster indicate anything about immo or anything? Is your VCDS legit? Why not reach out to RT for support if so?

 

[SaVAGeSoot]

Can you log rpm, voltage, rail pressure and attempt a start?

 

[SaVAGeSoot]

So I just looked at your one log. Your voltage was down to like 9.5 when it actually fired up! And your rail pressure isn't even close! You're not getting enough fuel to your HPFP or it doesn't work You need to check pressure to filter canister and flow rate to HPFP asap.

 

[SaVAGeSoot]

Did you ever check to see if injectors are actually popping? May be clogged being used engine. You have no idea how long it sat and if quality fuel or not was left in. Ran into that before with a ProMaster Diesel. Sat for months. Was towed in and spent days diagnosing. Clogged jectors it was. Best of luck

Whatever the injectors are or are not doing is irrelevant at this point! He has no rail pressure!

 

[SaVAGeSoot]

No worries, I'm just trying to ensure that he doesn't keep running that HPFP dry if there's anything still left of it until he gets fuel and lubrication to it. CP4.2s really hate pumping air.... it's their number one killer!

 

[SaVAGeSoot]

Check the manual, I think I remember that you cannot reuse those if you don't want leaks. Get a brand new one!

 

[SaVAGeSoot]

I think the ratchet strap around the cherry picker feet keeping the drivetrain from tipping back is my favorite part of everything you've shared thus far!

 

[SaVAGeSoot]

I keep saying that an extra 100deg C EGTs are no bueno, but @volkswagens-for-life has everyone brainwashed that this is just fine