Fuel Injector Quantity Test
WARNING: This page is about a different car, the 2002 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.
- Remove fuel rail, complete with fuel injectors, from engine. DO NOT disconnect fuel supply or return lines. Place fuel injector being tested into a graduated container.
- Using fused jumper wire, connect one terminal of fuel injector to battery positive terminal. Activate fuel pump. Using another fused jumper wire, connect other terminal of fuel injector to ground for exactly 30 seconds. Fuel quantity should be as specified. See FUEL INJECTOR QUANTITY
table. If fuel quantity is more than or less than specification, replace faulty fuel injector.FUEL INJECTOR QUANTITY
Application Ozs. (mL) 1.8L Turbo 4.25-4.9 (125-145) 2.7L Turbo 4.5-5.5 (135-165) 3.0L 3.25-4.25 (90-125) 4.2L 3.25-3.9 (95-115)