SMOOTH IN NGV, "3 LIGHT" IN PETROL MODE

  • Tiny
  • Calista_2011
  • 1994 Mitsubishi Pajero

Smooth in NGV mode (normal in Drive & stop). But when I turn into petrol mode, its totally cannot start the engine. It can be started when I "press" the key together with accelerator. Then rpm can up-to 2,000 max only. It will die when I stop all the "pressing". Could anyone help me on this please?

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Thursday, February 9th, 2012 AT 2:37 PM

11 Replies

  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

Have the fuel pressure tested. Seems fuel is missing causing the problem.

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Thursday, February 9th, 2012 AT 9:06 PM
  • Tiny
  • Calista_2011
  • Member

Tks Mr Low. Will try & get back to you soon.

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Friday, February 10th, 2012 AT 12:16 AM
  • Tiny
  • Calista_2011
  • Member

This is 4G63. It has petrol & NGV. It is smooth when "NGV mode". Appear "3 lights" when "petrol mode". Where and how should I check? Expert plz.

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Saturday, February 11th, 2012 AT 2:55 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

What 3 lights are you refering to?
Did you check the fuel pressure?
Did you test the fuel pump?

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Saturday, February 11th, 2012 AT 6:56 PM
  • Tiny
  • Calista_2011
  • Member

Fuel pressure & fuel pump function normally. I just change spark plug, then test drive. I found that, it turn black after I back from test drive. Why so fast? What does it means Mr Low?

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Sunday, February 12th, 2012 AT 2:06 AM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

Too much fuel is getting to the cyliders which can be due to faulty injectors, Engine Coolant Temperature sensor, MAF.

Get a scan done to check for trouble codes.

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Sunday, February 12th, 2012 AT 7:45 AM
  • Tiny
  • Calista_2011
  • Member

I just set-up my workshop 2mths ago. Not ready for the scanner yet. I've a question here. Now, it has a "huge white smoke" from the exhaust when I start, petrol will leaking through exhaust. When I unplug the Air-Flow Sensor, leaking will reduce. Please advise. Tks

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Wednesday, February 15th, 2012 AT 2:19 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

You could have a faulty MAF or a vacuum leak somewhere.

Unplug the NGV ECU for disabling the fuel injectors to see if problem goes away. A faulty ECU can be shorting the injector circuits and causing the flooding when NGV system is not being used. Check the injector wirings.

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Wednesday, February 15th, 2012 AT 9:45 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,994 posts

http://www.2carpros.com/articles/mitsubishi-trouble-code-definitions-and-retrieval-procedure-for-odb1-system

See if above link is of any help.

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Wednesday, February 15th, 2012 AT 9:48 PM
  • Tiny
  • Calista_2011
  • Member

Dear Mr KH Low. My problem is solved 3 weeks ago. Due to replace a bad used injector. Tks for your kind assistance.

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Sunday, March 11th, 2012 AT 3:12 AM

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