Tech Tip: Diagnosing Subaru Vehicles that Won’t Take Fuel – UnderhoodService

Tech Tip: Diagnosing Subaru Vehicles that Won’t Take Fuel

Should you encounter a Subaru vehicle that won't refuel or causes the gas nozzle to shut off prematurely, here are some tips to aid diagnosis. The vehicle should first be checked for obvious problems, such as crushed or kinked hoses, misrouted hoses or broken components. If nothing is found, go to the gas station and confirm the condition.

Should you encounter a Subaru vehicle that won’t refuel or causes the gas nozzle to shut off prematurely, here are some tips to aid diagnosis. The vehicle should first be checked for obvious problems, such as crushed or kinked hoses, misrouted hoses or broken components. If nothing is found, go to the gas station and confirm the condition.

While at the pump, after confirming the condition, remove the hose from the canister marked FUEL TANK. Remember that there are three hoses, one for the purge (usually the smallest in diameter), one for the fuel tank and one for the drain to atmosphere after passing through the charcoal canister.

If you remove the canister fuel tank hose and the vehicle refuels normally, then the problem is most likely between the canister and the vent hose in the rear frame rail.

If you removed the canister fuel tank hose and the vehicle still won’t refuel, then the problem is most likely between that hose and the tank (remember, the split half technique from electrical class?). You will now have to gain access to the pressure control solenoid valve hose connections to split it further down to isolate the problem.

Obstructions that appear to be as slight as spider webs can cause this condition; clearing out the debris will correct this refueling problem.

Technical service bulletin courtesy of Mitchell 1.

For more information on Mitchell 1 products and services, automotive professionals can log onto the company’s website at www.mitchell1.com.

You May Also Like

TEXA Announces CAR 76.6.0 Software Release

The software provides free streamlined access without login or authentication required to the Motor TruSpeed platform.

The TEXA USA team announced its latest CAR 76.6.0 software release, to support continued updating of TEXA IDC5 coverage. Innovation of the TEXA IDC5 software is focused on new vehicle coverage, as well as new diagnostic feature functionality, the company said.

TEXA also announced its partnership with MOTOR Information Systems to provide free access to OEM repair and service information. TEXA IDC5 CAR diagnostic software provides free streamlined access without login or authentication required to the Motor TruSpeed platform, according to TEXA.

Educate Your Customers Utilizing AI

Discover how to generate quick, accurate explanations for repair orders and estimates, boosting your shop’s credibility and customer trust.

TEXA Runs Car Diagnostic Tool Promotion

The promotion is active from June 1 through August 31.

Bosch Releases 87 New Part Numbers in June

Bosch’s new part numbers cover 318 million vehicles in operation across North America.

AMN Drivetime: Mike Mohler

For Mohler, it all began in Monroe, Louisiana, where he worked for his father, Ray.

Other Posts

Cummins, Daimler Truck and PACCAR Form Joint Venture

The completed joint venture is now known as Amplify Cell Technologies.

AAPEX: Navigating the Automotive Aftermarket’s Digital Evolution

The shift toward digital platforms has reshaped how businesses operate, from inventory management to customer interactions.

Schaeffler Recognized as a GM 2023 Top Global Supplier

This is the fourth time Schaeffler has been honored with this award.

Schaeffler, ATSG Partner to Support Technical Education

Schaeffler will provide ATSG members with ongoing education and technical resources.