Car help please - Diesel Smoking on Kick Down - Page 3

hiroftm · 25th March 2011, 03:57 PM

Quote:

Originally Posted by PTR

Could just be the choke kicking in. Quick test, let it idel for 2 mins, then press the throttle to the floor and immediately release. Does it return to normal?

Whats the choke exactly? I'm not very car savvy...

I'll this when I finish work see what happens.

Gaz · 25th March 2011, 04:01 PM

For Mondeo - Check EGR valve isn't choked up and check pipes on EGR system for splits.

Inlet manifolds sometimes get choked up and need a clean

Worst scenario is probably injector fault

safcgun · 25th March 2011, 04:02 PM

http://www.uniteddiesel.co.uk/diesel-engine-smoke.php

PTR · 25th March 2011, 04:03 PM

Quote:

Originally Posted by hiroftm

Whats the choke exactly? I'm not very car savvy...

I'll this when I finish work see what happens.

Simple terms, when the car is cold and needs "help" to get it running, the choke opens which pushes up the idle so the engine generates more power.

That's a simplist view, before someone tells me its cack.

You used to get a lever for this that you would "pull out" when you started your car, but its been automatic for 20 years or so now.

Quote:

Originally Posted by Gaz

For Mondeo - Check EGR valve isn't choked up and check pipes on EGR system for splits.

Inlet manifolds sometimes get choked up and need a clean

Worst scenario is probably injector fault

How easy is it to get at this?

What can you clean it with? i.e. some kind of solvent, or just physically clean it up?

Black Smoke

This is due to a air to fuel ratio imbalance, either the fuel system is delivering too much fuel into the engine or there is not enough clean air (oxygen ) a few things to look for :

* Faulty injectors (injectors need attention at about 100.000 to 120 000 miles)
* Faulty injector pump
* Dirty air cleaner
* Turbocharger or intercooler faulty
* Problems within cylinder head, valves clogged up due to faulty EGR (exhaust gas recycling unit)

The Forte is injector cleaning, and works best if you fill 50% of a new fuel filter with it, so I'll do that tomorrow.
Will replace the air filter if it looks like it wasn't changed in the recent service - otherwise I'll give it a bang and make sure its not chocka with something it shouldn't be

Hopefully we can remove the EGR and have a look to see what state it is in.

If non of those are the culprit, its probably something serious

hiroftm · 25th March 2011, 04:14 PM

If its the choke and its because of the cold, when I push my foot to the floor should it return to normal?

And if it doesn't...?

Sorry for hijacking your thread btw

PTR · 25th March 2011, 04:18 PM

Quote:

Originally Posted by hiroftm

If its the choke and its because of the cold, when I push my foot to the floor should it return to normal?

And if it doesn't...?

Sorry for hijacking your thread btw

My old Micra did

Gaz · 25th March 2011, 04:25 PM

Quote:

Originally Posted by PTR

Simple terms, when the car is cold and needs "help" to get it running, the choke opens which pushes up the idle so the engine generates more power.

That's a simplist view, before someone tells me its cack.

You used to get a lever for this that you would "pull out" when you started your car, but its been automatic for 20 years or so now.

How easy is it to get at this?

What can you clean it with? i.e. some kind of solvent, or just physically clean it up?

Black Smoke

This is due to a air to fuel ratio imbalance, either the fuel system is delivering too much fuel into the engine or there is not enough clean air (oxygen ) a few things to look for :

* Faulty injectors (injectors need attention at about 100.000 to 120 000 miles)
* Faulty injector pump
* Dirty air cleaner
* Turbocharger or intercooler faulty
* Problems within cylinder head, valves clogged up due to faulty EGR (exhaust gas recycling unit)

The Forte is injector cleaning, and works best if you fill 50% of a new fuel filter with it, so I'll do that tomorrow.
Will replace the air filter if it looks like it wasn't changed in the recent service - otherwise I'll give it a bang and make sure its not chocka with something it shouldn't be

Hopefully we can remove the EGR and have a look to see what state it is in.

If non of those are the culprit, its probably something serious

Not sure, my mate had same car as you and had similar problems. I just remember he said he cleaned EGR and inlet manifold that was choked up. He was told to check pipes round EGR / intercooler for splits as well.

I clean EGR regularly on our Zafira Diesel, and just use carb cleaner with toothbursh or cloth to remove all the shit.

This might help http://www.fordwiki.co.uk/index.php/..._Clearout_TDCi

Use Forte stuff regularly when servicing ours, good stuff

hiroftm · 25th March 2011, 04:27 PM

Quote:

Originally Posted by PTR

My old Micra did

It hasn't affected the performance of the car (I saw performance, theres not much of it

) and settles down shortly afterwards. Like I say, its just if its been idle for ages (over night or a full shift at work) and its been very cold recently hasn't it?

Spot · 25th March 2011, 04:28 PM

Quote:

Originally Posted by WheyHey

Ram a tatty up the exhaust. Problem solved.

wrong thread

Jesse The Body Ventura · 25th March 2011, 04:38 PM

EGR valve will usually throw up an EML / Spanner light.
You'll also notice a drop in power below 2000 rpms.

Cleaning it can be very hit or miss, not sure on Ford parts but my Vauxhall was £70 including gaskets. Very easy to take off and replace.

As your car is 2004 I doubt it's got a DPF but I would check.

Could be fuel mixture, dumping too much fuel in or not enough air etc
Air filter, diesel filer, faulty MAF etc