I need help I can't get my engine to start

ONLY for ADVANCED technical discussion about the 240sx!
itsokimanemokid
Posts: 2
Joined: Tue Apr 24, 2007 11:26 am
Car: 1990 Nissan 240SX

Post

Ok so I bought a 1990 Nissan 240SX with the stock KA for $500 dollars and I was told it did not start well I replaced the battery, spark plugs, rotor, distributer cap, and the timing wires. That got it started and i drove it to my house but now it wont start again. Someone told me that it cold be that my engine is not getting enough fuel and it could be the gas pressure regulator. Well i changed that and still no change. I even tried spraying it with starting fluid. I was just wondering what suggestions any of you have it would be appreciated thanks.


vancouverbc
Posts: 3197
Joined: Thu Oct 30, 2003 1:30 am
Car: 1991 240sx

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Is it hard to start when engine is warm? I assume the starter is turning over the engine?

From the EF (Engine Fuel) & EC (Emission Control System) section - Diagnostic Procedure #5 / Hard to Start or Impossible to Start when Engine is Hot:** Fuel Pressure - Squeeze the line coming out of the filter and to the engine when cranking the car. You should feel pressure. No = Check the fuel pump and it's circuit. Yes = Continue

** Check Fuel Vapor - Disconnect fuel pressure regulator vacuum hose and plug the hose. Can you start the engine? Yes = Check fuel properties (don't know what this actually means) No = continue

** Check Injector - Remove crank angle sensor (distributor) from engine. Be sure to note the location and orientation of the rotor before taking the CAS out of the engine. It needs to go back the same way (Crank angle sensor harness connector should remain connected) Disconnect ignition coil harness connector. Turn ignition switch on (Do not start engine) When rotating crank angle senor shaft (distributor), does each injector make an operating sound? No = Check injectors and circuit. Yes = Continue

** Check Ignition Spark - Disconnect ignition wire from installed spark plug. Connect a good known spark plug to the ignition wire. Place end of spark plug against a suitable ground and crank engine. Check spark. No Good = Check ignition coil, power transistor unit, and circuits. Yes = Continue

Check ECU Harness Connector

Check ECU Power Supply and Ground Circuit.

Basically, what's being looked at here is if the engine is getting fuel, the injectors are injecting and the spark is sparking. The ECU part is standard fare in diagnosing our car.


itsokimanemokid
Posts: 2
Joined: Tue Apr 24, 2007 11:26 am
Car: 1990 Nissan 240SX

Post

The time I got it started I tried for 10 minutes till it finally started and yeah the starter is turning over


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