Cold Start Injector: Service and Repair

REMOVING AND INSTALLING COLD START VALVE

Removing and Installing:





- Pull off plug (1).
- Unscrew fuel line (2).
- Unscrew bolts.
- Take off cold start valve.

Installation Note:





- Check code number (1).
- Replace seal (2).

Checking:





- Unscrew cold start valve on intake housing.
- Fuel line remains connected.

Checking
- Unscrew cold start valve on intake housing.
- Fuel line remain connected.
- Pull off fuel pump relay (1).
- Bridge terminals 87 and 30 with Special Tool 61 3 050.
- Fuel pump runs.

Leak Test:





- Check permissible leak rate.

Leak Rate 0.3 cc/min
at test pressure 2.5 ±0.05 bar(psi)

Checking Fuel Flow Rate and Spray Angle:





- Hold cold start valve in measuring glass 13 3 020.
- Plug Jetronic test lead 61 1 440 on cold start valve and connect with B + and B -.
- Check fuel flow rate and spray angle (1).

Fuel flow Rate 85 cc/min ± 12%
at test pressure 2.5±0.05 bar(psi)

Spray Angle approx. 80°