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

Techs Want Quality – So Do Customers (VIDEO)

High-quality parts and trusted brands are at the top of every technician’s list. Sponsored by The Group Training Academy.

In a recent survey, professional automotive technicians like yourself were asked what factors most influenced their engine management purchasing decisions – High-Quality Parts and Trusted Brand were at the top of the list.

How can you be certain that the part you install in your customer’s car is right and won’t result in a comeback? One of the key ways to do that is to simply select a product that’s engineered for correct on-vehicle performance, and a long service life.

Don’t Guess Which Repair Parts Are Right (VIDEO)

What’s in the box is critical when it comes to a successful repair. Sponsored by The Group Training Academy.

Your Recommendations Matter To Customer Selection (VIDEO)

Your customers view you as the expert and are there, because they trust you. Sponsored by The Group Training Academy.

Belt Measuring Tool (VIDEO)

Use the correct tool to measure the effective belt length at the cord line. This video is sponsored by Continental.

Mass Airflow Sensors (VIDEO)

Follow along as Joe unboxes the OEM replacement mass airflow sensor. This video is sponsored by United Motor Products.

Other Posts

AMN Drivetime: Rick Maxwell

Rick and Bill talk about what it means to continue the legacy of a family business.

Long-Lasting Brake Pads (VIDEO)

How long brakes will last depends on many factors. This video is sponsored by Centric Parts.

Curing Intermittent And Chronic Fuel Pump Failures

The fuel pump may be one of the most misdiagnosed components on a vehicle.

AMN Drivetime: Dave Caracci

Dave Caracci is a guy who can wield a wrench as deftly as he can a sales pitch.