T6 2019 CXGB Engine transplant into 2015 vehicle no start!

dutchy21uk

New Member
Sourced and installed replacement engine for my 2015 Caravelle. CXGB 102ps donor vehicle is newer variant out of a 2019 machine. Engine will crank and all pressures and flows look fine but no start!! Followed all bleeding procedures and engine runs fine on easy start but drops as soon as you stop spraying.

Injectors have been overhauled twice and still no start can only be a fuel issue at this stage but refuses to fire!

Attached are some videos of starting attempts with various vcds channels monitored. Anyone got any advice or ideas.


 
Sorry cannot really see much from the videos.
@mmi is aour expert on these things but as a start It might be easier if you run the diagnostics for fuel related info and post those.

Eg

(1) Please post full VCDS Auto-Scan

(2) Please make a log of the following.

Ignition ON

VCDS > Select > 01-Engine > Adv. Meas. Values

Tick data items


IDE00021 Engine speed
IDE00182 Camshaft adaptation intake bank 1: phase position
IDE00347 Air mass: actual value:
IDE00352 Main injection: duration of activation
IDE00407 Rail pressure regulation: status
IDE00412 Starter control: terminal 50
IDE00416 Starter control: terminal 50 feedback
IDE07742 Cylinder head: pressure sensor 3 bank 1: raw value
IDE07744 Particle filter: air pressure sensor 1 bank 1: raw value
IDE07818 Fuel high pressure sensor: actual value
IDE07824 Tank-internal presupply pump 1 bank 1: activation

Tick

1772873703626.png


Log
> filename > Start (the logging - IMPORTANT!!!)

Crank the engine (4 seconds is sufficient)

Stop (the logging), etc.
 
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