Question about 1992 Nissan 240SX Fastback
My daughter parked the Sentra last night, then went to start it this morning and it won't start. I pulled the plugs, and all four cylinders are full of fuel. Dried it out, and replaced the plugs, tried starting it, and the same thing. Floods out badly, and right away. Any ideas?
You do not have a fuel pump, fuel pressure regulator, or other fuel-related issue.
What you have, in fact, is an issue with the fuel injectors. All 4 injectors get constant power, and the ECU provides a pulsed ground circuit (in milliseconds) to energize the injector (the ground completes the circuit, pulls the electromagnet open to let the fuel spray). If the ground circuit is constant, as in your case, you will have the injectors spraying all of the time, as you have described seeing fuel on the tops of the pistons. This can only be caused by these 2 factors: either you have a chafed injector ground wire shorting that wire to a ground on the engine, or a bad ECU.
Posted on Oct 18, 2008
SOURCE: wont stsrt
sounds very much like the coolant temp sensor
, this tells the pcm that the engine is cold, sometimes they fail and tell the pcm the car is at -40 degrees, the pcm then tries to compensate by keeping the injectors open for too long flooding the engine. the part is inexpensive, and normally easy to replace. It can be checked with a scan tool, or a volt/ohms tester,
Posted on Dec 22, 2008
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