Diesel BT-50 blowing a lot of white smoke

Patriot

Administrator
My 10 year old BT-50 seems to be having a bit of trouble. Drove out on Friday night and all was good. Got back into the car and started the engine. As I drove off I noticed a lot of smoke! It was kind of like a smoke screen behind the vehicle. A huge amount. Before I could find a place to pull over the smoke lessened after a little while and finally got ceased. Drove home normally. Started the engine up to see if there was an issue, but not too much smoke., Checked it this morning and an even bigger amount of smoke. Huge. The smoke is a whitish/ light grey -enough to fill the street!!! Also noticed that fuel consumption has gone up massively.

Any thoughts on what it could be. Done about 180,000 km. Isn't driven a lot these days, once or twice a fortnight.

Hoping to get some idea of the issue before taking it to a mechanic.
 

Albynsw

Well-Known Member
Could be a leaking injector dropping too much fuel into the chamber and settled down after the excess fuel has been burnt off
 
Last edited:

Patriot

Administrator
Is this something a mobile mechanic can help with? I am loathed to drive it because A) I think the vehicle on startup releases more crap into the atmosphere than 100,000 other cars and B) I don't want to do any (?more) damage.
 

FranksnBeans

Well-Known Member
My understanding is that white smoke typically means unburned diesel. I had a similar issue a few years ago that was caused by an injector that was gummed up and stuck open. It would leak diesel into the cylinder while it was parked up and when started would throw a huge cloud of white smoke out the back.

I ran some injector cleaner through a tank of diesel and it cleared up pretty quick. Fuel economy never quite came back to what it was before so while I was getting a bunch of other work done I had the injectors rebuilt and now it's better than ever.
 

hiluxxury

Active Member
Is this something a mobile mechanic can help with? I am loathed to drive it because A) I think the vehicle on startup releases more crap into the atmosphere than 100,000 other cars and B) I don't want to do any (?more) damage.
Yes, a diagnostics tool would be able to tell if its dropped an injector. Its another story if a cyl isnt working properly due to a blown head gasket/rings/cracked piston etc.
 

RBJET

Well-Known Member
I had the same issue with the same vehicle.
Tried the cheap option of replacing glow plugs. Helped a little but didn't sort the issue.
Ended up being injector #5 on it's way out, been great ever since.

Have a professional with a proper scan tool have a look at it.
 

Hoyks

Well-Known Member
I've replaced all the injectors on mine at 150k and its a bit of work. I did it in the driveway and it only calls for basic tools, but probably more than your average mobile mechanic wants to attempt as you need to take the rocker cover off and gut the left hand side of the engine bay.

A set of injectors, rocker cover seals and high pressure lines didn't leave much change from $3k and I'd suggest that you have spare intake manifold seals handy too. https://www.baileysdiesel.com/produ...Ford-Ranger-Mazda-BT50-2-2L-&-3-2L-p292807825

I bought the cable and downloaded the software to program the ECU with the injector calibration data, but I'm told that driving it for a bit achieves a similar result eventually. https://forscan.org/download.html and https://obd2australia.com.au/product/forscan-obd-to-usb-cable-with-ms-can-switch/


You probably don't want to leave it as the motors have a nasty habit of burning out pistons if injector issues are neglected.
 

Patriot

Administrator
I've replaced all the injectors on mine at 150k and its a bit of work. I did it in the driveway and it only calls for basic tools, but probably more than your average mobile mechanic wants to attempt as you need to take the rocker cover off and gut the left hand side of the engine bay.

A set of injectors, rocker cover seals and high pressure lines didn't leave much change from $3k and I'd suggest that you have spare intake manifold seals handy too. https://www.baileysdiesel.com/produ...Ford-Ranger-Mazda-BT50-2-2L-&-3-2L-p292807825

I bought the cable and downloaded the software to program the ECU with the injector calibration data, but I'm told that driving it for a bit achieves a similar result eventually. https://forscan.org/download.html and https://obd2australia.com.au/product/forscan-obd-to-usb-cable-with-ms-can-switch/


You probably don't want to leave it as the motors have a nasty habit of burning out pistons if injector issues are neglected.
I am not driving it at all. The smoke fills the entire street! It is spooky. When it first happened I was worried the car was on fire!!!

Would something like this work? It is so bad I wouldn't drive it to the mechanic. https://www.supercheapauto.com.au/p/penrite-penrite-diesel-injector-cleaner---375ml/562711.html Just to clean it up a bit before getting it to the mechanic?
 

Albynsw

Well-Known Member
I am not driving it at all. The smoke fills the entire street! It is spooky. When it first happened I was worried the car was on fire!!!

Would something like this work? It is so bad I wouldn't drive it to the mechanic. https://www.supercheapauto.com.au/p/penrite-penrite-diesel-injector-cleaner---375ml/562711.html Just to clean it up a bit before getting it to the mechanic?

Waste of money in your scenario in my opinion, they are maintenance type products
Get it tilt trayed to the mechanic if you are concerned
The cost is probably covered under your roadside assistance if you have it
 

Lost1?

Well-Known Member
If you are good with a set of tools and can access a diagnostic tool to code your injectors you can DIY. I am doing my injectors and SCV at 200,000k. For the triton it cost about $2,300 for all the parts. I did have to hunt around for a bit though. Only buy OEM spec injectors (Bosch, Denso or whoever Mazda used). There is no saving to be had buying injectors that are $500 cheaper, that drop a tip into the cylinder later on.
 

cam04

Well-Known Member
If you have a leaking injector the oil will be buggered and then you’ll have bigger issues quickly if you keep driving it. This is the mechanism by which the Hyundai/Kia diesel failures got famous.
 
Last edited:

Krumpy

Active Member
I’m sure someone on here could recommend a diesel specialist in your area. Personally I’d take a recommendation from someone and flatbed it straight there.
 

Hoyks

Well-Known Member
I am not driving it at all. The smoke fills the entire street! It is spooky. When it first happened I was worried the car was on fire!!!

Would something like this work? It is so bad I wouldn't drive it to the mechanic. https://www.supercheapauto.com.au/p/penrite-penrite-diesel-injector-cleaner---375ml/562711.html Just to clean it up a bit before getting it to the mechanic?
If its filling the street with smoke, then I wouldn't drive it and would only run it for a quick diagnosis. After dumping that bottle in the tank it will take a bit of driving to get the stuff through to the injector, a bit more to see if it actually does anything. All running that should probably be avoided if it giving the signs its on the verge of catastrophic failure.

If you knows someone that is confident with mechanical stuff, owes you a big favour and has a torque wrench, then its do-able at home, but allow a full weekend. I can loan you the CANBUS to USB cable, you'll need to download the FORSCAN software and pay the $40 subscription.

From memory the battery needs to come out, so to fuel filter, intake manifold, some of the EGR system, rocker cover, cabling needs to be re-located... its a bit of work and at workshop hourly rate it won't be cheap.

I used OEM quality parts (Siemens injectors are what came out) and changed the injector lines as it was recommended to do it. The injector retainers need to be torqued down to the correct tension, the rest is just sockets and spanners.

As Alby said, a tilt tray is the relatively cheap option, compared to a new engine. It would also be worth taking to someone that knows what they are looking at to ensure it is actually injectors, you might be dropping a lot of $$ on something that isn't the actual problem.
 
Last edited:
Top