940 L4-2.3L SOHC VIN 88 B230F (1992)
Spray Pattern Test
12.
Check the spray pattern of the injector.
A poor spray pattern can cause the following problems:
^ Hard starting and stalling when cold.
^ Restart problems after short trips.
If a poor spray pattern is observed, use an industry approved fuel injector cleaning system and perform cleaning process as instructed by cleaner
manufacturer. When done, recheck spray pattern.
If fuel injector pattern is very poor, replace and retest with new cold start injector.
13.
Use a fuel resistant measuring cup and meter the volume of fuel injected over a one minute period.
Volume:
approx. 160 cc/min at correct system pressure of 43 psi (300 kPa)
If reading is different, replace and retest with new cold start injector.
14.
Disconnect injector jumper wire to ground.
15.
Clean tip of injector immediately and check for injector leakage.
Leakage: less than two drops per minute at tip
If leakage exceeds two drops per minute, replace and retest with new injector.
16.
Disconnect all jumper wires, reinstall all relays and the cold start injector (use new gasket if needed).
