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Home >> Volkswagen >> 1996 >> Passat TDI, 4D Sedan, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing - Diesel >> Fuel System >> Fuel Delivery & System Pressures >> Fuel Leak Check
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Fuel Leak Check

To check for leaking high-pressure fuel line, start engine and allow it to idle. Place cardboard over high-pressure fuel line and connection. Note if a leak is being detected by fuel being sprayed onto cardboard. If leak exists, repair high-pressure fuel line as necessary.