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Bentley Volkswagen.Golf.Jetta.R32.Official.Factory.Repair.Manual.1999-2005

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Secondary air system<br />

Página 27 de 35<br />

26-46<br />

If no pressure drop is indicated:<br />

- Proceed to "Checking Leak Detection Pump<br />

V144- for internal leaks".<br />

If pressure drop is indicated:<br />

- Replace fuel cap and re-test.<br />

- Proceed to "Checking Leak Detection Pump<br />

V144- for internal leaks".<br />

Checking Leak Detection Pump -V144- for<br />

internal leaks<br />

Basically, in the following procedure the EVAP<br />

system will be filled with smoke, the engine<br />

started and the LDP activated using the VAS<br />

5051 or VAS 5052. With the LDP activated, and<br />

after clearing initial smoke away from the LDP<br />

area using compressed air, the system is then<br />

filled with smoke again and rechecked for smoke<br />

at the LDP filter.<br />

Conditions<br />

Ignition switched off<br />

LDP is visible<br />

Component Locations<br />

Tester hose connected to fuel filler neck<br />

VAS 5051 or VAS 5052 Diagnostic tool<br />

connected to vehicle<br />

Smoke generator connected to battery<br />

- Turn KLI 9210 valve to "Test" and use smoke<br />

generator trigger to fill system with smoke (wait<br />

until smoke is coming out of the LDP filter).<br />

http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=...<br />

12/2/<strong>2005</strong>

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