Motronic injection and ignition system
Checking intake air system for leaks (outside air)
Checking with engine leak detector spray G 001 800 A1
Special tools, testers and auxiliary items
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◆ Fault reader V.A.G 1551 with cable V.A.G 1551/3
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◆ Engine leak detector spray G 001 800 A1
Notes:
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◆ The vacuum in the intake system will cause the leak detector spray to be drawn in with the outside air. The leak detector spray reduces the ignitability of the mixture. This leads to a drop in engine speed and to a significant increase of the CO content.
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◆ The safety precautions listed on the container must be adhered to.
Test sequence
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‒ Start engine and run at idling speed.
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‒ Connect fault reader V.A.G 1551 and select engine electronics control unit (address word 01); selection is carried out with engine idling
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