Excessive Smoke on Acceleration

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
M

mudinuri

Active Member
Posts
673
Location
New Forest
Hi,
I created a thread a week or two ago regarding the excessive smoke from the exhaust and Nodge very kindly advised cleaning the Inlet Manifold. As I"ve not got a garage I will probably clean the Inlet Manifold when the weather improves, but in the meantime would adding ARCHOIL ART6400D make any difference?
Their advert seems to imply that their product cleans everything!
cheers
 
It'll only clean where the fuel goes. The inlet manifold get fresh air, exhaust gas from recirculation and a fine oil mist thrown from the the turbo bearings.
It's this mixture that clogs the inlet manifold. The hot exhaust gas partially ignites the oil mist in the plentiful air. The resulting soot is what clogs up the manifold.
Adding fuel system cleaners will only clean the fuel system however.
 
Thanks once again Nodge 68. Is cleaning the inlet manifold an easy job to do?. I"m a 75 year old bloke, reasonably fit but only a rudimentary tool kit and mechanical knowledge. I do however have the a Haynes manual which is all gobbledy gook to me.
 
mudinuri said:
I haven"t had a chance to look at the Air filter, but will be replacing it, hopefully sometime this week. Thanks for that.
Click to expand...
You'll need a long allan key or an allan for a 1/4" socket set for that, 5 or 8mm I think. You'll never reach with the usual short allan keys.
 
Alibro said:
You'll need a long allan key or an allan for a 1/4" socket set for that, 5 or 8mm I think. You'll never reach with the usual short allan keys.
Click to expand...

Long 5mm Allen key is what you need

In theory a clogging air filter shouldn't make black smoke on the TD4. The MAF monitors the actual air entering the turbo. So as the ECU knows how much air is going in, it knows how much fuel to add. If less air goes in, less fuel is added.
A clogged inlet manifold will cause black smoke. The reason for this is simple. The ECU monitors inlet manifold pressure. It calculates how much fuel is needed for a particular boost pressure. However the boost pressure won't be the same for all cylinders. The coked up cylinders (normally cylinders 1 and 2) will get less air. This makes those cylinders receive too much fuel for the available Oxygen, hence the smoke.

Edit: Corrected to make more sense.
 
Last edited:
Nodge68 said:
Long 5mm Allen key is what you need

In theory a clogging air filter shouldn't make black smoke on the TD4. The MAF monitors the actual air entering the turbo. So as the ECU knows how much air is going in, it knows how much fuel to add. If less air goes in, less fuel is added.
A clogged inlet manifold will cause black smoke. The reason for this is simple. The ECU monitors inlet manifold pressure. It calculates how much fuel is needed for a particular boost pressure. However the boost pressure won't be the same for all cylinders. The coked up cylinders (normally cylinders 1 and 2) will get less air. This makes those cylinders receive to much air for the fuel, hence the smoke.
Click to expand...
Are these arse about face Nodge? I love your posts and always learn from them but this one has me confused.

Not unusual! :p
 
Alibro said:
Are these arse about face Nodge? I love your posts and always learn from them but this one has me confused.

Not unusual! :p
Click to expand...
Nodge has just miss typed the words air and fuel in the wrong place in the last sentence.

Shuould be : This makes those cylinders receive to much fuel for the air, hence the smoke.
 
Alibro said:
Are these arse about face Nodge? I love your posts and always learn from them but this one has me confused.

Not unusual! :p
Click to expand...

Sorry Ali. It was a long day!!

GrumpyGel said:
Nodge has just miss typed the words air and fuel in the wrong place in the last sentence.

Shuould be : This makes those cylinders receive to much fuel for the air, hence the smoke.
Click to expand...

Thanks GG. Now edited to make sense;)
 
Alibro said:
Lol, poor Nodge. One awkward bugger pulling you up on your grammar and the other on your wording.
How do you put up with us? :p
Click to expand...

My Grammar isn't great to be honest. Not enough attention paid at school with a dose of dyslexia thrown in!!
It made sense in the end. We'll call it a collaboration.;)
 
mudinuri said:
Thanks Guys, But is cleaning the Manifold something a numpty like me can do?
Click to expand...
Removing the manifold isn't difficult. Cleaning it is a mucky jobs. There are lots of different products too use. I like Kerosene to soften the goop, then wash out with petrol or carb cleaner to finish.
 
Last edited:
Nodge68 said:
My Grammar isn't great to be honest. Not enough attention paid at school with a dose of dyslexia thrown in!!
It made sense in the end. We'll call it a collaboration.;)
Click to expand...
Didn't mean nothing by it :)

I have a knack for spelling and grammar, so mistakes jump off the page at me. I bet you have knacks for things I'm crap at - everyone's different, and it takes all sorts to make a world.

Anyway, OP, I use Gunk to clean the inlet manifold - let it soak for a good while. A Draper bottle brush set is useful too. Ideally, get hold of a spare from a scrappy so you can have a good go at it without taking your car off the road for too long.
 
guineafowl21 said:
Didn't mean nothing by it :)

I have a knack for spelling and grammar, so mistakes jump off the page at me. I bet you have knacks for things I'm crap at - everyone's different, and it takes all sorts to make a world.

Anyway, OP, I use Gunk to clean the inlet manifold - let it soak for a good while. A Draper bottle brush set is useful too. Ideally, get hold of a spare from a scrappy so you can have a good go at it without taking your car off the road for too long.
Click to expand...

No offence taken guineafowl 21 ;)


It's a good idea to get a replacement inlet manifold and clean that up in advance. Then it's just a straightforward swap;)
 
Are all TD4 Inlet Manifolds the same? If I order one from a Breaker how will I know if it will fit my 2003 Serengeti. Are there any number I need to look out for? Or is there anyone out there that has one for sale? Forgot to mention. My TD4 is an Auto. Does this make any difference?
 
Last edited:
All the same as far as I know. Don't over pay for it though. They change hands for £15 to £25 including shipping on Ebay;)
 
Cheers Nodge 68. Whilst you"re on,can I ask. When I bought my Freelander I knew it had a ripped drivers seat which I have repaired to the best of my ability, but everytime I open the car door It drives me beserk just looking at it. I noticed a company on ebay were selling new Freelander 2 Front Seat Cushion Covers. Do you happen to know if anyone sells Freelander 1 Front seat cushion covers, I mean the original pattern and not the waterproof ones some use to cover ripped seats.
 
You must log in or register to reply here.

Similar threads

Gunter Shingleditch
Freelander 1 TD4 puff of smoke on start-up, stinky exhaust and shudders at 1000 RPM - SOLVED
Replies
16
Views
3K
Arctic2
Arctic2
hd3
Why Injectors Fail and ..
Replies
5
Views
4K
hd3
hd3
M
Crud, fuel pressure, and smoke problems!!!
Replies
10
Views
6K
pos
pos
Back
Top