Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Injectors, checking
Only vehicles with engine code ALH
Engine is equipped with 2-spring injectors. Injection of the fuel quantity thereby occurs in 2 stages. These injectors are to be exchanged if malfunctions occur as neither servicing nor pressure setting is possible.
Recommended special tools and equipment
- Injector test unit V.A.G 1322 with pressure line V.A.G 1322/2
Test requirement
- Pressure gauge switched on
Checking injection pressure
When testing injectors, keep hands away from the fuel spray, because the fuel penetrates the skin at high pressure and can cause severe injuries.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.