CHECKING/REPLACING COLD START VALVE
The cold start valve will enrich the fuel/air mixture
for starts when coolant temperature is below
15/35°C (59/95°F).
Pull off plugs on cold start valve.
Remove cold start valve.
Fuel line remains connected.
Check that fuel pump functions correctly (see
"Checking Fuel Pump Pressue").

Hold cold start valve in measuring glass 13 3 020.
Connect Jetronic test lead no. 61 1 440 on cold
start valve and on B+/ground.
Cold start valve should eject fuel.
Installation: Check O-ring, replacing if necessary.

Vehicles after change point in 1982
REMOVING AND INSTALLING/CHECKING
COLD START VALVE
Removing and Installing:
Pull off plug (1).
Disconnect fuel line (2).
Unscrew screws (3).
Take off cold start valve.

Installation:
Check code number (1)*.
Replace seal (2).


* See Specifications

Checking:
Unscrew cold start valve on intake housing -
fuel line remains 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*.


* See Specifications

Checking Fuel Flow Rate and Spray Angle:
Hold cold start valve in measuring cup
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)*.


* See Specifications