How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Matt Your Own Question

Matt
Matt, Mechanical Engineer
Category: Mitsubishi
Satisfied Customers: 20608
Experience:  BEng hons Mech engineering, in auto industry 22 years
12772297
Type Your Mitsubishi Question Here...
Matt is online now

Mitsubishi Shogun 3.2di-d 2004 had timing chain replaced and

Customer Question

Hi, Mitsubishi Shogun 3.2di-d 2004 had timing chain replaced and some related gears due to timing chain failure. Running okay before, but now blowing out grey white smoke. Checked: Valve timing, pistons okay, cylinder head pressure tested, valve seats recut, no visible damage to pistons. Everything reassembled but blowing greyish white smoke? possibly unburnt fuel..... Fuel pump checked over and bench tested okay. Injectors tested. Vehicle is now not starting. Any suggestions as to what the problem could be? David Godley
Submitted: 6 months ago.
Category: Mitsubishi
Expert:  Matt replied 6 months ago.

Hello

If you haven't already then I'd suggest to do a compression test across all cylinders to confirm the pressure is up where it should be and that all cylinders are within 10-15 psi of each other

if this is OK then check the connections to the crankshaft sensor, unplug it and check for corroded contacts and broken wiring, and consider fitting a new sensor - do the same for the cam position sensor

If the EGR valve is stuck open then this too can effect starting so try disconnecting it to see if this helps or changes anything

Could also be an injector leaking fuel back through the overspill pipe, so not getting enough fuel pressure to tell ECU to fire the injectors, this is trickier to find and you’ll need the garage to do a ‘run back’ test to identify which one is the issue

Lastly it’s also worth considering fitting a new fuel filter as if only slightly blocked this can lower fuel supply pressure and choke the main pump, the pump will be more sensitive to this when its cold as diesel thickens considerably with low temperatures.

nd do the same for the fuse, ideally measure the voltage at the pump and check its getting 12V

Also if its not injecting at all then check the connections to the crankshaft sensor, unplug it and check for corroded contacts and broken wiring, and consider fitting a new sensor - do the same for the cam position sensor

If the EGR valve is stuck open then this too can effect starting so try disconnecting it to see if this helps or changes anything

Could also be an injector leaking fuel back through the overspill pipe, so not getting enough fuel pressure to tell ECU to fire the injectors, this is trickier to find and you’ll need the garage to do a ‘run back’ test to identify which one is the issue

Lastly it’s also worth considering fitting a new fuel filter as if only slightly blocked this can lower fuel supply pressure and choke the main pump, the pump will be more sensitive to this when its cold as diesel thickens considerably with low temperatures.

Customer: replied 6 months ago.
Hello Matt, sorry to take so long to respond to you. The vehicle had previously been plugged into a diagnostic fault code reader and there were no fault codes recorded; which ruled out most of your suggestions. Since your suggestions were not valid, we again contacted the Mitsubishi Technical help line who suggested the fuel pump timing was more than likely to be at fault. The fuel pump was removed and reset in accordance with the advice from the Mitsubishi Technical dept and the vehicle is now up and running well. Unfortunately on this occasion your advice was not suitable and we will notify Just Answer with a copy of this response. Kind regards, ***** *****

What Customers are Saying:

 
 
 
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
< Previous | Next >
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
 
 
 

Meet The Experts:

 
 
 
  • mike_a_mechanic

    mike_a_mechanic

    Mitsubishi Mechanic

    Satisfied Customers:

    51
    17 years experience as a auto mechanic, foreign and domestic.5 years running my own repair business.
< Last | Next >
  • http://ww2.justanswer.com/uploads/MI/mikeamechanic/2013-4-2_175558_photo.64x64.JPG mike_a_mechanic's Avatar

    mike_a_mechanic

    Mitsubishi Mechanic

    Satisfied Customers:

    51
    17 years experience as a auto mechanic, foreign and domestic.5 years running my own repair business.
  • http://ww2.justanswer.com/uploads/05/05muranosl/2012-1-26_195212_JA.64x64.JPG Jake's Avatar

    Jake

    Mitsubishi Mechanic

    Satisfied Customers:

    38
    Experienced collision repair technician, Pulaski Tech graduate and DSM hobbyist.
  • http://ww2.justanswer.com/uploads/SU/superbovine/2012-6-6_233210_547717101510889173290181666093332n.64x64.jpg Doug C.'s Avatar

    Doug C.

    ASE Certified Technician

    Satisfied Customers:

    33
    Mitsubishi trained and employeed technician
  • http://ww2.justanswer.com/uploads/IN/indytech/2013-8-8_102717_SantoDomingo146598x6402.64x64.jpg Greg's Avatar

    Greg

    All import japan models

    Satisfied Customers:

    87
    All Japan made models
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Mechanical Engineer

    Satisfied Customers:

    4441
    BEng hons Mech engineering, in auto industry 22 years
  • http://ww2.justanswer.com/uploads/TE/techmachine/0601821347169_717372168_8940977_39623330_o.64x64.jpg Ross's Avatar

    Ross

    Diagnostic and repair technician

    Satisfied Customers:

    453
    Licensed diagnostic and repair technician