Question about Nissan Navara

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Heavy smoke when full axcelleration

No oil loss but black smoke only when accelorator pushed to floor no loss in power

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It could be a turbo pipe leaking, If it has a high mileage it may need a decoke, The under side of the inlet valves can carbon up and block the air flow causing a rich mixture , Inter-ject can remove this if you can find a outlet.

Posted on Mar 27, 2015

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  • Nissan Master
  • 383 Answers

Usually black smoke is a sign of burnig oil. Your engine may be in the early stages of this condition where only when you demand full power with the pedal to the floor oil smoke may show up. Unless the crank case is over filled when the oil is changed (which means the oil drained for the change may not have been given enough time to fully drain.) Very few engines I have ever seen will not have used some oil between changes. I personally change my oil and filter every 3,000 miles no matter what the manufacturer states in the service manual. You don\'t have complete combustion of the fuel which means that there is a small amount of raw gas which passes by the rings and into the crank case, It\'s neglable, but I prefer to have nothing but oil in my crank cases.I don\'t assume you are flooring it that often. ...if you are, you should see some drop in the oil level on the dip stick after you have racked up 3,000 miles plus or even sooner if you run the piss out of the car. In some cases it may be very neglible to where it looks like it\'t on the top mark on your dip stick, but there is probably a negable drop you are not seeing. Synthetic oils are superior but can not keep the fuel from passing by the rings.They just do a much better job in protecting the moving parts of of the engine. I still change synthetic oils well before their recommended change time. I always change the filter.I road race Nissan 300Z;S and after each race I change the oil. I use AMZOIL synthetic race oil, but I change it after every race to look for any traces of metal in the oil drained. I\'ve never had an engine failure. Mercedes went to exclusively synthetic oils in the 90\'s due to the number of engine failures.That resolved their problem. In my shop, most of the cars I service, I use a 10W30 conventional oil, usually Castrol. The customer brings the car back in for an oil and filter change every 3,000 miles. I have 1 customer with a 1989 Toyota Camry with 350,00 miles and we have done no major engine work to it. It has had one front main oil seal replaced, a valve cover gasket replaced and outtside of that just regular maintenance. I have another costomer with a 1981 Nissan (Datsun) 280Z which has 297,000 miles on it and never had anything but regular maintenance on it. We replaced the clutch once. I have another customer with a Mercedes 240D which has now racked up 970,000 miles on it. (it\'s a diesel)We do the regular maintenance on it. I\'ts had a water pump once and some other items which have worn out because of the exposure to heat, a few small oil leaks which have caused rubber rot and a few other items which have worn out due to the mileage put on it, but the engine, transmission and injection pump are original. The diesels use a different type of oil designed to run in diesel engines from cars to big rigs. He is a surgeon and could easily go out and buy a $100,000 car,(he drives 150 miles a day). He lives 75 miles away from his office to a ranch he owns. He wants to make it to a million miles. I have other regular customer\'s who have racked up high mileage on Ford trucks and Chevy trucks. The Fords seem to hold up a little better.I use to service Import cars exclusively. I opened my business 31 years ago as the "Datsun Specialist". My shop remained packed with Datsun\'s.

I had a 5 man crew. There was a terrable drop in the economy here in the US and I couldn\'t make it servicing Datsun\'s alone so I started servicing other imports. I now service imports and American cars to keep the doors open because of the bad economy. My employees don\'t seem to mind as long as they take home a pay check. Hmm. How did I get on the subject of my shop. Oh well, at least you know that in the US many shops, especially the independants are struggling to stay open. Many have gone under and many are hanging on by a thread.Getting back to your question, A very rich mixture could also cause a blackish color smoke, but you would notice a drop in your gas mileage because it would be dumping fuel into the engine. Also your check engine light would probably go on because the oxygen sensor would sense a major fuel mixture problem. I hope I might have shed some light on your question.Sorry about my rambling on about an issue whic kind of went off of the main subject. I was just trying to point out that proper maintenance may yeild you high milage with few problems.

Posted on Jun 29, 2014


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Posted on Jan 02, 2017

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SOURCE: loss of power on hills

Hi, i think i answered you in another post.
If not then the likely cause of your problem is turbo related the most common cause is one of the pipes going to the turbo has a small split in it causing this problem.

Nearly all the diesel turbo cars with your problem usually means a pipe needs replacing for the turbo this will need to be checked as it can be difficult to find the damaged pipe because they work under high pressure so actually seeing the damaged part can be difficult so check properly.
If you are unsure then get a garage to check this as they will know the fault and will have a good idea exactly which pipe is damaged.
Worst case of this will be that the turbo needs replacing but this is in the most severe of cases the turbo can blow if the pipe has been damaged for to long as it will be working under the wrong pressure.
What happens is when you acelerate the turbo builds up pressure giving you more power when you need it but when the pipe becomes damaged this pressure is lossed and you then lose power and will cause black smoke coming out of exhaust.

Hope this is some help to you but if you have any problems or questions then give me a shout back and ill be glad to assist you further ok

Posted on May 20, 2008

  • 166 Answers

SOURCE: lossing power

not all hdi injectors are the same and there are some tricks to replacing the injectors so be careful as you can cause saver damage to your engine if not done correctly.
as the other gye said it may be a turbo pipe but Peugeots being Peugeot it could be any thing your best bet is take it into a dealer and get them to put it on the PPS to diagnos it properly

Posted on Dec 20, 2008

  • 1348 Answers

SOURCE: blows lots of black smoke if back fire knocking smell of fuel in

are you losing coolant? ford had a huge problem with that engine,and the coolant eats the main bearings.
the defect is in the EGR valve setup.
check with ford,they are aware of the issue,there are thousands of them

Posted on Sep 01, 2009

  • 153 Answers

SOURCE: some loss of pick up power and a hissing or air

Look for a leak on the pressure side of the turbo. I dont think the turbo is bad or else it wouldnt make the wooshing noise. You need to put the engine under a load to build turbo boost. Just giving it throttle in neutral wont work. Block the drive wheels up off the ground SECURLEY and put it in gear up to about 35 mph and ride the brake and give it throttle to find out where the leak is and repair from there

Posted on Oct 15, 2009

  • 1 Answer

SOURCE: skoda octavia 1.9 tdi

lods have a problem it a skoda 19tdi no power when i give it the boot 80 km only turbo kicking in ok changed air flow , washed out boost valve, would u think the timing is out

Posted on Jul 01, 2010

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