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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 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3
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◆ Engine leak detector spray G 001 800 A1
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◆ CO tester V.A.G 1363A
Notes:
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◆ The vacuum in the intake manifold will cause the leak detector spray to be drawn in with outside air. The leak detector spray reduces the ignitability of the mixture. This leads 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 CO test V.A.G 1363A.
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‒ Systematically spray parts of the intake system with engine leak detector spray.
If the engine speed drops or the CO value changes:
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‒ Check for leaks in the area of the intake system sprayed and eliminate leaks.
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