[kingcreole]

you telling me that turbo engines run at the same temps as NA engines HP for HP?

 

[kingcreole]

anyhow this is FA to do with the OP and his thread...so..in the words of a dragon...'I'm out'

 

[arcon]

Exhaust gasses are insert.
Brilliant you have a dictionary. Maybe now look up context and understand its application a little better. Then go elsewhere if you have a chip on your shoulder.

 

[kingcreole]

lol..all exhaust gases are inert after an cat ok...to apoint but thats treating the symtoms and not the cause...then tell me why I got 157ppm HC in my last MOT...you are talking about ideal....I am talking about reality..... don't be so fucking cheeky btw

 

[arcon]

After the cat? I didn't say that. Exhaust gasses are routed through an EGR long before the cat.
Barring a few hydrocarbons the exhaust gas is inert and is sent back to the inlet manifold when the valve opens and back in to the chamber with air. This reduces combustion temperatures.

How is it treating symptoms? EGR systems are on most diesels and a lot of turbo petrols nowadays as a bonafide and legitimate way of controlling temperatures. A lot of EGRs now are also cooled.

Maybe you should stop being an arse and do your own research.
Clearly you've already become Mr defensive for some reason so can't be told anything.

Clearly your understanding of CO CO2 HCs Particulate matter NOX etc and the ways a manufacturer trys to control these are not what you think.

 

[arcon]

As to why your gasses contain 0.015% fuel... Well time to get a hiliars book on internal combustion

 

[kingcreole]

yes you did...u said exhaust gases are inert..but since about 65% of the fuel is burned its up to the cat (or EGR... to burn the rest off or am I wrong..and its just a PR exercise in convincing you that modern GDI engines are more than 50% thermally efficient....if u can prove that then u get a job with Keonogsigg.

Quit wit the intellectual superiority thing...dickhead...I have a degree in mech eng and been a car buff all my days...

armchair expert

 

[arcon]

Exhaust gasses are inert. Didn't say anything about the cat though did I. I corrected a previous poster about EGR... Which is fact... It reduces NOX emissions by controlling combustion temperatures.

Nothing I've said is incorrect.

Some basic googling will educate you.
Yes EGR also burns remaining HCs off, but some basic research will show you it is about emissions control primarily, not fuel efficiency.

Anyway this info is out there and eeasily accessible and for some reason you've taken exception this this info... So get yourself a cup of warm milk and have a nap, then later on do some of your own research.

As for this thread, my jobs done.
As for arguing with stupid, well you win, your clearly more experienced at it

 

[kingcreole]

give it up arcon....we have spoiled already the OP's thread ...its not worth who's right or wrong anymore...in fact I feell ashamed going on so long outside the original question...drawn into that I was...mercy me...apologies to the OP..my fault.

 

[Gonesouth]

Hi,

My 2010 1.6tdci suffered from this low revs stutter for quite some time.

A long motorway drive in 4th gear (5speed box) seemed to clear out the dpf etc and improved the problem....as well as transforming the drivability of the car.

However, on checking for engine fault codes (dtc) I found the top O2 sensor was dead and therefore fuel/air mix was way off. This was a relatively cheap and available part, and is fairly accessible for the DIYer to change themselves providing you can clear the code as well.

The result is that this fixed the stuttering....and improved both drivability and fuel economy.

Hope this helps others.

 

[java5202]

Hi im a new user on this forum, i currently have a ford focus MK1 on a 02 plate 1.8 115hp tdci duratecq, the problems im having is that the car has had sevice and has been currently misfiring and spluttering from 1500 rpm up the rev range. I have observed whilst driving that the tempreture sensor on the dash goes from the middle and falls a quarter back to cold on the dial.

The the car starts from cold with no problems, i have gone on to the dash borerd and put the car in to the test mode and have noticed the car is fine up to 65 degress and then the car starts act up, it starts to act like its out of fuel or acts like it misfiring, power is dramatically reduced and im not able to drive the car further until the hits 78 degress with me reving the car and then it starts to behave again or it cuts out.

So far i have replaced

camshaft sensor

Fuel preasure sensor

power hold relay

the thermostat has been replaced and the system drained.

and a full service.

The car will eventullay either come up to tempreture or the coil light will come on and it dies.

Can anybody assist me, thanks

 

[arcon]

Leakoff test

 

[crepello]

Have you checked the diesel particulate filter, they need recharging and will play up if the additive runs out.

 

[Gonesouth]

Update to my previous post (page 5 - Oct 2015) on this problem.....

The low revs/light throttle jerking returned earlier this year. Ford suggested a couple of bottles of injector cleaner in the tank which delivered a slight improvement, but the problem persisted. The car has full Ford service history.

I did remove the EGR valve, but this was surprisingly "very" clean - I do use Millers diesel additive with every other tank of fuel and the car does a 70 mile motorway run 2-3 times a week.

Previous checks revealed no fault codes, but eventually it came up with a P0134 - Powertrain (O2 sensor Circuit - No activity Detected). I'm fairly sure that this was the same code that came up 2 years ago, and the problem was then fixed by replacing the O2 sensor on the top/front of the engine - the one with the black cable, not the two with blue cables.

This time I decided to remove the sensor and try cleaning it before buying a replacement. It worked a treat and I can once again drive normally below 1500rpm without the annoying jerking. The overall drivabilty has also been improved and fuel economy returned to normal (which frankly still sucks considering what Ford said it would return).

Hope this helps anyone else who's experiencing with this problem.

 

[Mouldy1234]

Post removed. New thread created.