EVAP Archives - Import Car
Audi EVAP Case Study

Let’s look at some of the things that you should know about Audi EVAP systems before trying to tackle such a repair.

VW EVAP Canister Purge Valve Diagnosis

Performing a function test and vacuum check are essential for proper diagnosis and avoiding any unnecessary replacements.

Perform OE-Level Analysis of 28 Systems with TOPDON’s New Diagnostic Tool

This Bluetooth-enabled device can automatically identify a vehicle’s make, model and year to quickly match the right software to the vehicle.

Redline Detection Launches EasyConnect

Technicians can snap the adapters into an easily accessible line, then connect their smoke machine to the EVAP system.

Acura Tech Tip (Codes P0455 And P0456): EVAP Large Leak Due To Gas Cap

On some 2012-2013 Acura ILX, MDX, RDX, TL, TSX and ZDX models, the stock gas cap can cause codes P0455 (EVAP system large leak) and/or P0456 (EVAP system very small leak detected). The gas cap may also be loose or have a stick-slip feeling when tightened.

EVAP Diagnostics

To understand how any EVAP system in a Honda or other vehicle works, you have to know how the EPA tests for evaporative emissions. The EPA tests these systems by putting a car in a sealed chamber. The vehicle is “hot soaked” to simulate the car being run, parked and allowed to cool. Sensitive sensors in the chamber detect the presence of fuel vapor.

Top EVAP Tips When Replacing Fuel Pumps

Nothing is worse than an EVAP code after a fuel pump has been replaced. Discovering that the tank needs to be dropped again to address a problem can kill shop productivity and profitability. The following tips can help you avoid comebacks and having to drop the fuel tank for a second time.

VIDEO: Getting More Information On Generic Codes

Andrew Markel demonstrates how to easily and efficiently gain more information on a code on a specific vehicle that may not tell you much by itself. Sponsored by ProDemand from Mitchell1.

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VIDEO: Slow Oxygen Sensor Preventing Secondary Air Monitor Reset

Andrew Markel explains how a non-resetting secondary air monitor required the use of crowd-sourced repair information when techs were led down a rabbit hole. Sponsored by ProDemand by Mitchell1.

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VIDEO: Diagnosing Multiple Codes Faster

Andrew Markel shows how the right repair information software can help find one solution for two separate codes. Sponsored by ProDemand from Mitchell1.

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Hyundai Elantra Fuel System Diagnostics

We recently had a 2011 Elantra in for a check engine light complaint motivated by the fact that it was due for a New York state inspection. This high-mileage car was owned by one of our good customers. It has served him well with no driveability complaints and, with only 175,000 miles on the odometer, he was hoping it would not be an expensive repair.

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KIA Codes P0171, P0446, P0507 and P2187

Learn how to diagnose a too-lean emissions issue on a 2006 Kia Rio model.