1991 Nissan 240SX not starting

Tiny
OLRUSTY
  • MEMBER
  • 1991 NISSAN 240SX
Engine Performance problem
1991 Nissan 240SX Two Wheel Drive Manual

Gentlemen--I have not received an answer to my question of 8-6-09 regarding the starting of a Nissan 240SX. I have to squirt gas or either into air intake to start engine -HOT OR COLD-TO START IT. IT THEN RUNS FINE. Re: 1991 Nissan 240SX engine starting. Please advise----Olrusty I also sent a donation with my question!
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Saturday, August 8th, 2009 AT 2:00 PM

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Tiny
DUBTECH
  • MEMBER
If the car runs fine once started then all your fuel system components should be in working order.

Couple of ideas-
Large intake leak. You may be getting too much un-metered air into the engine causing an extremely lean condition and a hard start.

The engine also relies on the coolant temp sensor to accurately measure temperature so that it can provide the correct mixture on startup. If that sensor is open or shorted it will drastically change the mixture making it difficult to start.

Have you accessed the fault memory of the ECU? Any codes stored may point us in the right direction.

This is all assuming that your tune-up parts are in perfect working order. Make sure the plugs are the correct application, in good shape, and gapped properly. Cap, rotor, fuel filter, and air filter should also be in acceptable condition.
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Monday, August 24th, 2009 AT 10:19 PM

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