EVAP Codes and Fuel Pumps (VIDEO)

EVAP Codes and Fuel Pumps (VIDEO)

Here are three tips can help you avoid having to drop the fuel tank for a second time. Sponsored by Carter Fuel Systems.

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 productivity and profitability. Here are three tips can help you avoid comebacks and having to drop the fuel tank for a second time.

FIRST…Check the Entire EVAP System Before and After the Repair. Before you replace the pump, check for EVAP codes that are active, historical or pending. Just like TPMS, test before you touch. After the pump is replaced, it takes at least one drive cycle for most vehicles to set an EVAP code for a small leak. A leak due to disturbing the lines may not set a code during the initial test drive. The code may come on after the vehicle has been sitting for a while or a certain temperature has been reached. Some vehicles allow the integrity to be checked with a scan tool using bi-directional tests.

SECOND…Check the Filler Neck. Some fuel filler necks can be prone to corrosion. Over time, corrosive de-icers and road debris can destroy the protective coating on the pipes. Aftermarket fuel filler necks are available for popular models that have corrosion problems. If a filler neck is corroded, it is also a safety issue.

On systems that do not require a fuel cap to seal the system, inspect the gasket on the fuel filler door. Often, dirt and leaf debris can find their way into the area between the door and body.

THIRD…Check the Lock Rings and Tabs. The plastics used to make fuel pump lock rings and assemblies can become brittle over time. Any pounding or application of force can cause the assembly to leak. Also, if a metal lock ring has been removed multiple times, the metal can fatigue and distort. In some cases, this type of damage can cause an EVAP leak if not addressed during installation and removal. Some tanks, pumps and lock rings require special tools for removal and installation. These tools can prevent damage that can be caused using a screwdriver and hammer.

There you have it. Three tips to help you make sure the integrity of the evaporative emissions system is intact before you give the car or truck back to customer.

This video is sponsored by Carter Fuel Systems.

You May Also Like

Resetting the Belt Drive System

In this video, we cover what it takes to reset the belt drive system. This video is sponsored by Litens.

Many belt replacement intervals are 100,000 miles or more. Once this mileage is reached, it requires more than a new belt to make it to the 200,000 mile replacement interval. In this video sponsored by Litens, we cover what it takes to reset the belt drive system. 

Rick (Technician): I just need a belt for Mr. Jones’s car. 

Headlight Options

Your customers may be installing LED upgrades in their vehicles. Sponsored by The Group Training Academy.

Headlights and Visibility

Headlights are continually evolving to keep up with safety & styling. This video is sponsored by The Group Training Academy.

Headlight Bulb Replacement

Don’t overlook the role lighting plays in keeping drivers and passengers safe. Sponsored by The Group Training Academy.

Performance Revolution CV Axles

Are you disappointed with the relatively short lifespan of many aftermarket CV boots? This video is sponsored by GSP Automotive Group.

Other Posts

Extended Travel CV Axles

Avoid potential CV axle failure when off-roading with Extended Travel CV Axles. This video is sponsored by TrakMotive.

Understanding Emissions

Modern EVAP systems are selective with how they vent vapors back into the engine. Sponsored by Standard.

Oil Filter Housing Kits 

It is common for the seals to fail and begin leaking oil around the base. This video is sponsored by Standard.

Ignition System Secrets Every Tech Should Know

Unlock the secrets behind ignition systems for superior technician skills. Sponsored by The Group Training Academy.