Diagnostic Procedure 5 — Hard to Start or Impossible to Start when the Engine is Hot
EF & EC-532flowchartSR20DET engine (header tab).
TROUBLE DIAGNOSES
Diagnostic Procedure 5 — Hard to Start or Impossible to Start when the Engine is Hot
1
CHECK FUEL PRESSURE. 1. Pinch fuel feed hose with fingers. 2. When cranking the engine, is there any pressure on the fuel feed hose?
No
Check fuel pump and circuit. (See page EF & EC-596.)
Yes
2
CHECK FUEL VAPOR. 1. Disconnect fuel pressure regulator vacuum hose and plug hose. 2. Can you start engine?
Yes
Check fuel properties.
No
3
CHECK INJECTOR. 1. Remove distributor from engine. (Crank angle sensor harness connector should remain connected.) 2. Disconnect ignition wires. 3. Turn ignition switch ON. (Do not start engine.) 4. When rotating distributor shaft slowly by hand, does each injector make an operating sound?
No
Check injector(s) and circuit(s).
Yes
4
CHECK IGNITION SPARK. 1. Disconnect ignition wire from spark plug. 2. Connect a known good spark plug to the ignition wire. 3. Place end of spark plug against a suitable ground and crank engine. 4. Check for spark.
N.G.
Check ignition coil, power transistor and circuits. (See page EF & EC-576.)
O.K.
5
(Go to (A) on next page.)