2002 Mitsubishi Lancer Logo
Posted on Jun 28, 2010
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I checked my spark plugs and have a spark going to each plug. I changed the fuel pump thinking I didn't have enough fuel pressure. I sprayed some starter fluid in the intake and it started for about 5 seconds. I checked all of the fuses inside the car and out. My spark plug cables are new. I verified that both coils are sending a spark. What am I not seeing?

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Dave Sargent

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  • Master 488 Answers
  • Posted on Jul 08, 2010
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If you are getting spark and the engine tries to run on starter fluid, then you have lost fuel. Check that you are getting injection pulses at the injectors and check the fuel pressure at the fuel rail at the injectors. Check for power to the fuel pump when the engine is cranking, If you get no power to the fuel pump when cranking the engine, check fuses and relays. If the pump is running but you have no fuel pressure, check the fuel filter and fuel pressure regulator and replace any that are faulty. If the injection pulses are missing, check the supply relay which supplies power to the injectors first ( the injectors are earthed by the ECU) Disconnect one of the injector plugs and using a test light (buy one from a auto parts store) clip the end to a good earth on the vehicle body, switch the ignition on but dont start the engine, then probe the two connections in the injector plug. One of these connections should be active all the time with the ignition switched on. If it is, you may have a sensor failure (crank sensor etc), if it is not, check fuses and supply relays. A word of warning, the wiring you are dealing with is connected directly to the engine control, if you make a mistake, you can cause irreparable damage so if you have any doubts, take the vehicle to a professional..

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  • Mitsubishi Master 17,130 Answers
  • Posted on Jun 28, 2010
Donald DCruz
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I think you are not getting the command to the firing which has to come from the electronic igniter. this unit could be defective as it works in simultanously with the fuel pump injection. so check this out.

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It may be spark, but I'm inclined to think it is fuel related.

Good luck, and keep us in the loop!
JT
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