Land cruiser 1HD-FTE smoking at idle (2 Viewers)

[swany315]

Hello, I have a 2002 Land Cruiser 100 with the 1HD-FTE. The engine smokes at Idle but it does not burn much oil, I just drove it 1,500 Km and it burned about half a liter of oil. The engine starts fine and the power is good as well. The smoke is coming from the PCV hose, if I disconnect it it does not smoke out the exhaust. Many people say the engine needs to be rebuilt, and that might be true but I am confused because it starts fine when its cold, and has good power still. It runs great, it just smokes. Any advice on this would be good. I live in Kyrgyzstan and unfortunately there are not any good mechanics here for these engines.

 

[scubadoober]

I would call that excess oil consumption, equivalent to 2.5 liters on a 5,000 mile oil change interval. You have excess crank case pressure. As to what is causing it.....probably worn rings. You could run a compression test on all cylinders. How many kilometers on the engine?

 

[nissanh]

Osh is a beautiful town. I saw it on an overland show made by GrizzlynBear. They went to Bishkek too! Amazing place and there was a mechanic who fixed his Land rover 130! Unfortunately I don't have time to travel across the globe so I watch these shows so I can at least see the Mother Earth!

Now to the question. Now many Km's in the engine? Does it have a clean air filter? OEM is the best. Do some frequent engine oil changes to loosen up some of the compression rings. Try using 10W-40 engine oil. Definitely install a catch can. It's a well made Toyota so the engine will start even with low compression. If you ever plan to rebuild it and plans to keep it use only OEM parts including pistons and rings.. We have a Hilux Diesel as well and have experienced what you say.

 

[swany315]

Yes Osh is a beautiful place. The car has 312,000 km. It does have a catch can on it. And my thought is that it must be rings also, but because it doesn’t have any starting issues and isn’t using much oil I wondered if it was possible to be something else.

 

[nissanh]

How much of oil is getting collected in the catch can for say every 1000 miles?

 

[IndroCruise]

Hello, I have a 2002 Land Cruiser 100 with the 1HD-FTE. The engine smokes at Idle but it does not burn much oil, I just drove it 1,500 Km and it burned about half a liter of oil. The engine starts fine and the power is good as well. The smoke is coming from the PCV hose, if I disconnect it it does not smoke out the exhaust. Many people say the engine needs to be rebuilt, and that might be true but I am confused because it starts fine when its cold, and has good power still. It runs great, it just smokes. Any advice on this would be good. I live in Kyrgyzstan and unfortunately there are not any good mechanics here for these engines.

In addition to the good notes by @nissanh, may I comment that 312,000 kilometres (194,000 miles) is not large for the 1HD-FTE, 6-in-line, 4.2 litre turbodiesel engine with electronic timing of fuel injecton. If the service recommendations have been followed (see attached), then at least 500,000 kilometres (and probably much, much more) would be expected before a pull-down was necessary to replace piston rings or bearings.

Manufactured in 2002, so the vehicle is 23 years old -- but certainly this is not too old. If the engine has had a hard life in tough conditions without opportunities for good servicing/maintenance at the correct intervals (see attachments), then maybe problems with piston rings and bearings could happen at lower kilometres/miles in a worst case scenario. In such a case, there would be additional things to consider -- especially the 'top end' including valve gear and camshafts, intake and exhaust manifolds, Exhaust Gas Recirculaton (EGR) system, also turbo, intercooler, fuel pump (which is located on the side of the engine, not in the fuel tank as in 2UZ-FE), as well as timing belt, cooling system and waterpump etc, etc, etc.

Summarising Common Causes of Diesel Black Smoke

• • Air-Fuel Ratio Issues:
    The engine is receiving too much fuel and not enough air, resulting in unburnt fuel particles.
  • Dirty or Clogged Air Filter:
    A restricted air filter limits the clean air supply to the engine, creating a fuel-rich environment.
  • Faulty Fuel Injectors:
    Worn or dirty injectors can spray excess fuel or create poor spray patterns, leading to incomplete combustion.
  • Turbocharger Problems:
    A failing or underperforming turbocharger reduces the amount of air forced into the cylinders, resulting in a rich mixture.
  • Boost Leaks:
    Leaks in hoses or pipes in the air induction system can also reduce the amount of pressurized air the engine receives.
  • Mass Air Flow (MAF) issues:
    A faulty MAF sensor can incorrectly signal the amount of air entering the engine, leading to too much fuel being injected.
  • EGR System Problems:
    Issues with the Exhaust Gas Recirculation (EGR) system can affect the air supply and cause incomplete combustion.
  • Low Cylinder Compression:
    Worn components like piston rings or valves can reduce compression, preventing efficient fuel burn.
  • Carbon Buildup;
    Excessive carbon deposits in the combustion or intake systems can impede air and fuel flow, contributing to black smoke.
  • Poor Quality Fuel:
    Using fuel that is not of good quality can also affect the combustion process

Before even thinking about a major rebuild or replacement of the engine, suggest

• continue investigations of oil consumption as mentioned by @nissanh,
• remove, and if allowed in your part of the world, delete the EGR controls -- see video links below -- because EGR malfunction can cause problems which result in engine smoke (and in addition, oil contamination of intercooler, turbo and intake manifold -- maybe mitigated by a catchcan IF catchcan is a reliable brand and is working properly),
• remove cross-over pipes, disconnect controls, disconnect fuel lines (consider replacement), remove and clean the intake manifold and EGR valve and check condition of the VSV valves -- see attachments and video links below,
• while intake manifold is removed, consider taking the opportunity to test compression in each cylinder -- requires removal of injectors on this engine,
• consider testing and refurbishment of injectors if facilities are available (or replacement if necessary -- this is expensive).

Some helpful descriptions and explanations can be found in these videos:

Basic Service/Maintenance of 1HD-FTE engine in LC100


The following links are series of videos describing Removal of Intake and EGR system, including EGR delete and Catchcan installation

Part 1 – Removal of Intake


Part 2 – Removal of cross-over pipe and EGR
EGR Delete, Intake clean: [Part 2] Crossover pipe clean/ mod - https://youtu.be/0R9npiYm1Nk

Part 3 – Cleaning intake manifold
EGR Delete, Intake clean: [Part 3] Intake manifold clean/ reinstall. - https://youtu.be/qyejmyjH0pE

Part 4 – EGR delete and blanking plate
EGR Delete, Intake clean: [Part 4] EGR Plate - https://youtu.be/UofI3V78hIk

Part 5 – Catchcan installation
EGR Delete, Intake clean: [Part 5 FINAL] Catch Can Install. - https://youtu.be/R351fiLmrRU

Catch Can oil capture: example of LC200 with 4.5 litre V8 turbodiesel after 7,000 kilometres (4,350 miles)
(LC100 with 4.2 litre in-line 6 turbodiesel may be slightly different).
PROVENT 200: 208 millilitres after 7,000 kilometres; HPD: 75 millilitres after 8,000 kilometres

PROVENT 200 | Is it really worth it? | MY 7000km REVIEW, drain and testing | Catch Can comparison

In todays episode we talk about catch can’s once again. Specifically the Provent 200 unit installed in my 200 series Landcruiser. We are going to be measurin...

youtu.be

Factory Service Manual details for the 1HD-FTE engine can be found at HOME | LC100 Factory Service Manual - https://lc100e.github.io/

More complicated problems are possible -- but best to consider the more basic issues first.

1HD-FTE -- Left Hand Drive engine layout

1HD-FTE -- Right Hand Drive engine layout