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Matt, Mechanical Engineer
Category: Mitsubishi
Satisfied Customers: 22732
Experience:  BEng hons Mech engineering, in auto industry 22 years
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My pajero 3.2 di-d is pumping out smoke and loses power

Customer Question

my pajero 3.2 di-d is pumping out white smoke and loses power
Assistant: Thank you. Can you provide any more details to help us find you the right Expert?
Customer: what do you want to know
Submitted: 1 year ago.
Category: Mitsubishi
Expert:  Matt replied 1 year ago.


Check the connections to the EGR valve, if either the vacuum pipe of electrical connection are damaged / corroded then the EGR can be on all time which certainly will hurt performance. Its also possible that its a fault with the EGR valve so its worth removing the valve and cleaning it out with brake cleaner, if it looks particularly clogged then replace it.

If this is OK then check the small vacuum lines to the turbo and its connected control solenoid on the bulkhead, any cracks or leaks can give turbo issues and its best to have the boost pressure measured actually measured with a boost gauge to check that the turbo is healthy and that the sensor is reading correctly

If its a variable vane turbo (they’ll be an actuator on the turbo body - but not a wastegate) then check its vacuum pipework as above and check the connections to the diaphragm / solenoid valve

Also check all the high pressure hoses post turbo/s for any split hoses or cracked metal pipes, also check the ends of the intercooler as its not unheard of to pop the end caps off under high boost.

Customer: replied 1 year ago.
hi Matt....what is causing the white smoke?
Expert:  Matt replied 1 year ago.


sorry if I didn't make that clear, the white smoke will be unburnt fuel

so its likely that there's a lack of air or boost pressure leaking

hence my suggestions of above

Customer: replied 1 year ago.
I have had the pajero in a diesel diagnostic specialist and he could not find an actual fault only say it could be the fuel pump.........would his tests shown a faulty valve or pipe on the egr?
Expert:  Matt replied 1 year ago.


I woudl have hoped he has already checked what I suggested

it could be the pump

if the timing of the injection is off then this too will produce a lot of white smoke

has he offered any particular fault or its just a faulty pump?

Customer: replied 1 year ago.
they couldnt offer an particular fault only it was pointing to the he didnt charge for the diagnstic
Expert:  Matt replied 1 year ago.


in that case I'd check for the air leaks / boost leaks as I've 1st suggested and get back to me

Customer: replied 1 year ago.
ok i will thanks..........
Expert:  Matt replied 1 year ago.


do you still need help?

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Customer: replied 1 year ago.
i have not had a chance to look at it yet so still might need you
Expert:  Matt replied 1 year ago.