1HDT Light grey bluish smoke (1 Viewer)

Joined
Apr 12, 2021
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Philippines
148D28EB-9AD2-4AAC-9084-89C24E562E6D.jpeg
 
Joined
Apr 12, 2021
Messages
6
Location
Philippines
Hi folks! new member here from the PH, I'm just wondering what could be the problem with our rig? Newly changed oils, oil, air and fuel filter, new 6 injectors. The smoke is constant, the smell from the exhaust is horrible. Even in idling. The smoke is very thick when driving white bluish grey smoke. I'm afraid that it's the piston rings.
 
Joined
Nov 9, 2012
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Location
Olathe, KS, USA
I think your truck is a turbo (based on the T?)

(More info please)

Did this smoke start suddenly after all this work?

Was it there before the work?

Smoke colors vary and will indicate what is wrong.

Since you've just changed injectors (don't know if this was an "upgrade" or what), I would lean towards injectors not being matched to the engine or pump pressures not being correct or fuel filters clogged.

Was the oil changed the correct viscosity and type? If too thin, it could be sucked past the rings or through the PCV system.

A turbo will make different smoke colors mean different things to a non-turbo'd engine.
 
Joined
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Messages
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Philippines
Sir @BILT4ME Our rig has the standard CT26 turbo from factory. The smoke before changing the injectors were thick black; after changing the injectors there was a significant power gain. The smoke is unnoticeable when you are near the exhaust but the smell is too horrible; but moving back 3 meters away from the vehicle you can notice thick grey smoke when idling. Putting the vehicle in gear the smoke became much more thicker white bluish grey especially when you are punching the throttle. As for the injectors they weren't really new, the only part that was changed were the nozzle tips. I don't think that the fuel filter is clogged because we had it replaced with a new one. The oils that we have used were Petron Rev-X API CI-4/SL SAE 15W-40 (9.6 Liters). We are located below the equator so I do think that the viscosity of the oils are correct. Also according to our mechanic the turbo is fine; it's spooling great. The only problem that we want to solve is the smoke, the smell from the exhaust and the heavy fuel consumption. Thanks for you concern sir! I appreciate the time and effort.
 

mudgudgeon

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Dec 17, 2007
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Sydney, Australia
With new injectors, and new filter the next thing to check will be injection timing.

Its fairly simple to do, but needs some specialised tools.

White smoke in a diesel is unburned fuel this is most usually due to incorrect injection timing.
The strong smell of diesel in the exhaust also suggests you have unburned fuel passing through the exhaust.

It can also be caused by air getting sucked into the fuel system due to a cracked fuel hose, or leaking o ring on fuel filter, or failed diaphragm in the hand primer pump/ fuel filter assembly.
Air in the system will cause stumbling acceleration, and whitish smoke.

With the 1hd-t, a puff of smoke with a heavy stab on the throttle is normal, such as accelerating away from traffic lights.
This puff of smoke should look black/dark gray (not white/light gray), and should only be for a few seconds while the turbo spools up to boost.

There's plenty of helpful people, and stacks of info on the 1hd-t in the diesel tech section of the forum

Plenty of good reading here. And you'll get faster responses to questions in the diesel tech section
 
Joined
Apr 12, 2021
Messages
6
Location
Philippines
With new injectors, and new filter the next thing to check will be injection timing.

Its fairly simple to do, but needs some specialised tools.

White smoke in a diesel is unburned fuel this is most usually due to incorrect injection timing.
The strong smell of diesel in the exhaust also suggests you have unburned fuel passing through the exhaust.

It can also be caused by air getting sucked into the fuel system due to a cracked fuel hose, or leaking o ring on fuel filter, or failed diaphragm in the hand primer pump/ fuel filter assembly.
Air in the system will cause stumbling acceleration, and whitish smoke.

With the 1hd-t, a puff of smoke with a heavy stab on the throttle is normal, such as accelerating away from traffic lights.
This puff of smoke should look black/dark gray (not white/light gray), and should only be for a few seconds while the turbo spools up to boost.

There's plenty of helpful people, and stacks of info on the 1hd-t in the diesel tech section of the forum

Plenty of good reading here. And you'll get faster responses to questions in the diesel tech section
 
Joined
Apr 12, 2021
Messages
6
Location
Philippines
With new injectors, and new filter the next thing to check will be injection timing.

Its fairly simple to do, but needs some specialised tools.

White smoke in a diesel is unburned fuel this is most usually due to incorrect injection timing.
The strong smell of diesel in the exhaust also suggests you have unburned fuel passing through the exhaust.

It can also be caused by air getting sucked into the fuel system due to a cracked fuel hose, or leaking o ring on fuel filter, or failed diaphragm in the hand primer pump/ fuel filter assembly.
Air in the system will cause stumbling acceleration, and whitish smoke.

With the 1hd-t, a puff of smoke with a heavy stab on the throttle is normal, such as accelerating away from traffic lights.
This puff of smoke should look black/dark gray (not white/light gray), and should only be for a few seconds while the turbo spools up to boost.

There's plenty of helpful people, and stacks of info on the 1hd-t in the diesel tech section of the forum

Plenty of good reading here. And you'll get faster responses to questions in the diesel tech section
Thank you for this sir!
 

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