Replacement of the intercooler in the intake 1.4 TSI CAXA / CAXC antifreeze leak Audi A3 8P Skoda VW
The problem with antifreeze leakage in the intake manifold Audi A3 8P is quite common on VAG models with a 1.4 TFSI CAXA engine. When the level of antifreeze decreases, and there are no traces of leakage, I advise you to immediately unscrew the pressure sensor (2 screws on the Torx T20) in the intake manifold - if there are traces of emulsion and antifreeze on it, then 100% there is an antifreeze leak due to the intercooler.
The article of the intercooler (cooler) VAG 03F145749C
Purchased from the disassembly of VAG 03F145749B, but it needs to be modified with a file, since it does not fit because of the attachment.
If you use the clamps of the nozzles, then about 200-300ml of antifreeze will be required for refilling, i.e. it will be enough to buy a 1L G12+ canister
It is also recommended to replace the sealing rubber bands:
VAG 03C129717A - 4pcs - on the intake manifold
VAG 03C133073A - 1 piece - Throttle O-ring
VAG 03C129717H - 1 piece - intercooler gasket
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Link to the instructions for removing the intake manifold from ELSA with bolt tightening torques https://disk .yandex.ru/i/sikKClV_5PrQEQ
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Removing the intake manifold and cleaning from the emulsion took me about 3 hours, the process is quite simple, it was not necessary to remove the fuel rail.
Required tool: Torx T30, Spline M8, Torque wrench.
Additional useful tool:
Hose clamps AVTODELO 30403
Pliers for self-locking clamps with a flexible grip Case of Technology 821021
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Timecodes:
0:00 Symptoms of a problem with the intercooler in the intake
0:26 Review of what was bought for replacement
1:04 Instructions from ELSA
1:32 Removing the intake pipe
2:43 Removing the tubes into the intake manifold
5:40 Removal of coolant pipes
8:40 Removing the intake manifold
9:58 Removing the intercooler
11:51 Tightening torques of bolts from ELSA
12:28 Correction of the intercooler version B with a file
13:03 Intake manifold assembly
14:33 Tightening bolts with a 20Nm torque wrench
15:09 Connection of pipes and tubes
17:54 Starting the engine, monitoring the level of antifreeze
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