Dear all
I have a Navara D40 07 imported from the UK. It has done 72k.
I am facing the following issue:
Navara runs fine in low revs. At higher revs or when depressing the accelerator for quick acceleration with turbo on, the engine revs, the turbo sounds like it is kicking in, but there is no power boost and TONS of black smoke emitted from the exhaust .
To give a little background to this issue , two weeks ago i went for a long drive (500 km ) , road conditions were excellent but involved a good amount of uphill climbing and speeds on flat surfaces averaging 120kph with highest speed hitting 160kph.
On the way, while doing a steady 120 kph all of a sudden i heard a LOUD whistling sound (like a pipe or something blowing), the noise stayed constant for about 10 seconds and then the noise died. I thought it was an AC pipe or something. No loss of performance detected on the engine.
Later, i heard a distinct whistling sound when accelerating even gently and engine check light went on.
I thought it was a hose or pipe leading to the turbo leaking and had them replaced. The noise did not go down. It seemed to be coming from the turbo housing itself. Vehicle accelerated normally and turbo boost kicked in with good acceleration normally.
Yesterday, the boost went away completely and the above explained issue of heavy black smoke when i press the accelerator came on.
We do not have a scanner here so i do not know what error codes are being shown.
My Navara has a performance chip + i have blanked out the EGR pipe for a long time also.
Another issue noticed was that after the last engine oil replacement, i found that oil was more than the capacity. instead of 6.5 litres (with replacement of oil filter) there were 7.5 litres ! The oil used was Mobil 1 Synthetic 10w40. I have always used Mobil 1 5w40 ( 5w30 is not available here) also the ambient temperatures in summers easily reach 35 to 38 Celsius. The dip stick shows normal level of oil now.
This excess oil issue was fixed with the recent oil change (which was done after my long trip stated above). I do have access to a X431 scanner but do not have the software for Nissan.
I am looking for suggestions on how to isolate the problem given the issue at hand. Do i need a new turbo? a replacement of the turbo solenoid or anything else?
Also, for a long time, there is oil in the exhaust pipe of the vehicle. A few drops of oil are always on the floor the morning after the vehicle is parked overnight.
I have a Navara D40 07 imported from the UK. It has done 72k.
I am facing the following issue:
Navara runs fine in low revs. At higher revs or when depressing the accelerator for quick acceleration with turbo on, the engine revs, the turbo sounds like it is kicking in, but there is no power boost and TONS of black smoke emitted from the exhaust .
To give a little background to this issue , two weeks ago i went for a long drive (500 km ) , road conditions were excellent but involved a good amount of uphill climbing and speeds on flat surfaces averaging 120kph with highest speed hitting 160kph.
On the way, while doing a steady 120 kph all of a sudden i heard a LOUD whistling sound (like a pipe or something blowing), the noise stayed constant for about 10 seconds and then the noise died. I thought it was an AC pipe or something. No loss of performance detected on the engine.
Later, i heard a distinct whistling sound when accelerating even gently and engine check light went on.
I thought it was a hose or pipe leading to the turbo leaking and had them replaced. The noise did not go down. It seemed to be coming from the turbo housing itself. Vehicle accelerated normally and turbo boost kicked in with good acceleration normally.
Yesterday, the boost went away completely and the above explained issue of heavy black smoke when i press the accelerator came on.
We do not have a scanner here so i do not know what error codes are being shown.
My Navara has a performance chip + i have blanked out the EGR pipe for a long time also.
Another issue noticed was that after the last engine oil replacement, i found that oil was more than the capacity. instead of 6.5 litres (with replacement of oil filter) there were 7.5 litres ! The oil used was Mobil 1 Synthetic 10w40. I have always used Mobil 1 5w40 ( 5w30 is not available here) also the ambient temperatures in summers easily reach 35 to 38 Celsius. The dip stick shows normal level of oil now.
This excess oil issue was fixed with the recent oil change (which was done after my long trip stated above). I do have access to a X431 scanner but do not have the software for Nissan.
I am looking for suggestions on how to isolate the problem given the issue at hand. Do i need a new turbo? a replacement of the turbo solenoid or anything else?
Also, for a long time, there is oil in the exhaust pipe of the vehicle. A few drops of oil are always on the floor the morning after the vehicle is parked overnight.
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