NHTSA investigates Volkswagen Jetta diesel for fuel leak

The National Highway Traffic and Safety Administration opened a preliminary investigation on Aug. 2 into 40,000 copies of the 2011 Volkswagen Jetta TDI. NHTSA received seven complaints stemming from leaks between the fuel line and the fuel injectors.

The common-rail fuel system in the diesel operates under extreme pressure, at about 26,000 psi, which could lead to the leaks.

The affected Jettas are relatively new, ranging in mileage from 2,470 to 7,764, according to the report. NHTSA has received one similar complaint concerning theVW Golf, also equipped with the turbocharged diesel engine.

These investigations by NHTSA are the first step in the recall process. If enough evidence is gathered, an engineering analysis is called for. After that, a recall is issued.

Volkswagen said it isn't aware of any accidents or injuries related to the problem.

By Jake Lingeman