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2005 Jetta Mk4 Evap Leak


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2005 Jetta Mk4 Evap Leak. A fuel vapor leak, or a lack of purge flow in the system. Dealer diagnosed it as a failed n80 purge valve.

Purge Valve Evap Line Hose Port 9905 VW Jetta Golf MK4 Genuine 077
Purge Valve Evap Line Hose Port 9905 VW Jetta Golf MK4 Genuine 077 from carparts4sale.com

You can pinch the evap line on the canister side of the n80 valve and run basic settings for evap and see if it passes. I blocked off the line going into the. I've ran the 070 measuring block and after about 15 minutes of idling, it kicks back an evap not ok.

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Purge Valve Evap Line Hose Port 9905 VW Jetta Golf MK4 Genuine 077

This valve is connected to the intake and is supposed to stay shut and not allow fuel. You can pinch the evap line on the canister side of the n80 valve and run basic settings for evap and see if it passes. P0455 code gets triggered when the engine control module (ecm) detects a condition in the evap control system that indicates: P0442 indicates that the evaporative emissions system has a small leak.

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