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Very Poor Mpg After Egr Blank


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#1 exponential

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Posted 18 December 2013 - 05:22 PM

Hi guys.

Some of you may remember me having a bit of a fiasco with having a blanking plate installed incorrectly a few weeks ago.
I immediately rectified the problem and the blank now sits exactly where it should.

Anyway, ever since blanking, I have been getting really poor MPG.
I have always hovered around 50MPG since owning the car (i reset the average when i purchased the car) and i do exactly the same route every day to and from work.

My car now averages around 40MPG and doesnt sound right. Very rattly under acceleration and just not the same car.

Is a loss of MPG a common side effect of EGR blanking and would it also explain my now very rattly sounding engine...

Mike.

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#2 shamus1

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Posted 18 December 2013 - 06:15 PM

this is why I took my blank out and had egr problem sorted,my car was exactly the same as yours worse mpg and ran rougher?



#3 mixmasterlooney

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Posted 18 December 2013 - 06:15 PM

Loss of mpg not heard that from anyone else buddy. Have you done anything on the car udibg elm config? If so you may have reset the mpg.

You can remove the egr blanking plate and see if that helps as a last resort

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#4 exponential

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Posted 18 December 2013 - 08:28 PM

this is why I took my blank out and had egr problem sorted,my car was exactly the same as yours worse mpg and ran rougher?


Strange how everyone else reports more MPG and quicker throttle response except us two?

Wonder why???

#5 exponential

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Posted 18 December 2013 - 08:34 PM

Loss of mpg not heard that from anyone else buddy. Have you done anything on the car udibg elm config? If so you may have reset the mpg. You can remove the egr blanking plate and see if that helps as a last resortSent from my GT-I9300 using Ford OC mobile app


I have a problem with my DPF at the moment which is throwing up an EML.

Gives me two error codes which I clear regular with my bluetooth obd reader but these codes have existed since I bought the car when i was getting 50 MPG.

I have a "coated" DPF so no eoyls tank btw.

Maybe its the DPF clogging up extremely badly which is causing the poor MPG?

Seems a coincidence though that since i blanked the EGR, the engine runs rough especially under acceleration and the poor MPG.

#6 mixmasterlooney

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Posted 18 December 2013 - 09:24 PM

I have a problem with my DPF at the moment which is throwing up an EML.

Gives me two error codes which I clear regular with my bluetooth obd reader but these codes have existed since I bought the car when i was getting 50 MPG.

I have a "coated" DPF so no eoyls tank btw.

Maybe its the DPF clogging up extremely badly which is causing the poor MPG?

Seems a coincidence though that since i blanked the EGR, the engine runs rough especially under acceleration and the poor MPG.

 

 

May well be a direct result of blanking the EGR. if your DPF is blocked or has been clogged up for a while this may be the issue, when the EGR valve intake is blanked off this increases exhaust gasses as a result it may well be the extra free gasses are being bottlenecked by the clogged DPF resulting in the complete opposite of better MPG.

 

I don't think anyone on this forum who've done the EGR blank had any DPF issue to start with including myself, this may be a new thing.

 

I do agree on the extra noise/rattling of the engine, more noise is expected although since the cold weather i have noticed an increase in sound from the engine... again this is rather normal until the engine has fully warmed up, same for petrol engine vehicle mpg will drop during winter anyways, i to have an mpg drop but i know this is due to the cold weather and long warm up times, maybe not having the EGR blanked during winter improves mpg, this theory would make sense for short journeys



#7 exponential

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Posted 18 December 2013 - 10:10 PM

You have hit the nail on the head there bud!

 

Especially the extra noise during the cold! It is amazing how the engine sounds in the cold compared to the summer!

 

So what do I do??

 

I am due to have my DPF removed in January which obviously includes a remap with EGR programming removed BUT what if mapping out the EGR has the opposite effect and causes me more issues?

 

I truly think that my clogged DPF is root of all my issues as, as you have said, not a single person on here has reported any negative issues after EGR blanking!

 

I just don't know what to do for the best??



#8 mixmasterlooney

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Posted 18 December 2013 - 10:30 PM

To reduce the noise you can use cold weathet oil rather than regular. Thess type of oil are more fluid like at colder temperature and reduce engine wear. Other than that there isn't much you can do its normal for the engine to be noiseier before operating temperature.

Egr delete does the same as blanking off the egr it basically turns off the egr valve. Blanking it should be better as it closes off the egr intake to the engine and stops anything from inside the egr pipes going to the engine.

your best bet is to get rid of your dpf as already planned. All the trapped soot must be seriously choking your engine I'm surprised you haven't said anything about power loss.

Either way a remap or egr delete, egr blank or not will not fix the dpf it will only get worse. Have you tried giving the car a good hard rev? Is there alot of black smoke from the exhaust?



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#9 exponential

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Posted 19 December 2013 - 09:04 AM

To reduce the noise you can use cold weathet oil rather than regular. Thess type of oil are more fluid like at colder temperature and reduce engine wear. Other than that there isn't much you can do its normal for the engine to be noiseier before operating temperature.Egr delete does the same as blanking off the egr it basically turns off the egr valve. Blanking it should be better as it closes off the egr intake to the engine and stops anything from inside the egr pipes going to the engine.your best bet is to get rid of your dpf as already planned. All the trapped soot must be seriously choking your engine I'm surprised you haven't said anything about power loss.Either way a remap or egr delete, egr blank or not will not fix the dpf it will only get worse. Have you tried giving the car a good hard rev? Is there alot of black smoke from the exhaust?Sent from my GT-I9300 using Ford OC mobile app


After i have had the DPF removed an am going to get my mechanic mate to flush the old oil out and replace it with GTX magnatec, change fuel and oil filter to see if that help my engine.
My power delivery is like my old 1.8 focus DI from years ago, nothing nothing then bang! Shouldnt be like that in a euro 5 engine really. Should be very smooth delivery of power.
I have tried everything to clear it, italian tune up, high revs on motorway for 20 mins but no joy! :(
I get no smoke whatsover either, none at all......

#10 jg321

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Posted 19 December 2013 - 04:31 PM

I wouldn't be surprised if it smokes like hell when you've had the DPF removed. I think you have another problem, which is not throwing up codes, but is clogging your DPF. I don't think your DPF is faulty at all, I think it's doing it's job.

 

Time will tell of course - I could well be wrong! 

 

P.S. Mine sounds like a tractor in this weather also!



#11 exponential

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Posted 19 December 2013 - 07:49 PM

I wouldn't be surprised if it smokes like hell when you've had the DPF removed. I think you have another problem, which is not throwing up codes, but is clogging your DPF. I don't think your DPF is faulty at all, I think it's doing it's job.
 
Time will tell of course - I could well be wrong! 
 
P.S. Mine sounds like a tractor in this weather also!


Aw mate dont say that! :D

What do you think could be the problem?
Its so strange how blanking my EGR has had the complete opposite effect to what 99.9% of people experience.
Could it be my injectors out of sync or something along them lines and if so, how do I find that out?
Should I remove the blank and have the DPF removed and ecu remap but NOT remove the EGR software?

Glad (in a friendly way) that yours also sounds like a tractor in this weather! LOL

#12 mixmasterlooney

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Posted 19 December 2013 - 07:58 PM

If you have no smoke it might not be the dpf afterall. Is there any ratlling/shaking sound like a sea shell inside a coke can?

Is that oil for low temperature? If your car is far off the due point for servicing I would hold off on changing filters not relating to oil change.

Your car should really be at its peak power during winter. On my car Before egr blank the turbo kick was explosive and easily lost traction pulling away after blanking it was smooth I also had some hesitation around 1700rpm before fitting the blank that disappeared right fitment.

Maybe your exhaust system needs to be examined for blockage. Very strange problem I must say

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#13 jg321

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Posted 19 December 2013 - 08:53 PM

Aw mate dont say that! :D

What do you think could be the problem?
Its so strange how blanking my EGR has had the complete opposite effect to what 99.9% of people experience.
Could it be my injectors out of sync or something along them lines and if so, how do I find that out?
Should I remove the blank and have the DPF removed and ecu remap but NOT remove the EGR software?

Glad (in a friendly way) that yours also sounds like a tractor in this weather! LOL

 

Couldn't tell you tbh, and not sure what I'd do regarding the EGR blanking either.

 

It just seems to me that it clogs way too quickly, even if you're only doing short journeys.

 

Regarding the other comments about smoke, surely the fact that you've no smoke could be a result of the DPF catching it all, and clogging?

 

If anyone knows more about this than I do then it'd be good to hear. Touch wood I'm still OK with mine, but one day I may need some of this advice myself!

 

The turbo on mine seems a little more whistly in winter too, I rather like it! Still have that weird aux-belt tssh tssh noise but that wears off by the time I've got to Middleton :)



#14 exponential

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Posted 19 December 2013 - 09:04 PM

If you have no smoke it might not be the dpf afterall. Is there any ratlling/shaking sound like a sea shell inside a coke can? Is that oil for low temperature? If your car is far off the due point for servicing I would hold off on changing filters not relating to oil change.Your car should really be at its peak power during winter. On my car Before egr blank the turbo kick was explosive and easily lost traction pulling away after blanking it was smooth I also had some hesitation around 1700rpm before fitting the blank that disappeared right fitment. Maybe your exhaust system needs to be examined for blockage. Very strange problem I must saySent from my GT-I9300 using Ford OC mobile app

Screenshot_2013-12-04-17-02-01.png

Just for your information, these are the two codes I get constantly.
I regularly delete them but within a day or two they come back (usually after I get a strong judder and loss of power momentarily).
I get no smoke even on a maintained high rev. There is no seashell sound that I am aware of and I usually turn the radio off once a week to listen for any unusual noises.
Castrol magnatec is supposed to "cling" to your engine internals to provide smoother start up from cold to prevent wear.

I get a good turbo surge when it kicks in but it feels restrained and certainly not smooth.

Im so dissapointed as I thought blanking would have many benefits but the opposite has occured.

Maybe there is an underlying cause......

#15 exponential

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Posted 20 December 2013 - 06:32 AM

 Couldn't tell you tbh, and not sure what I'd do regarding the EGR blanking either. It just seems to me that it clogs way too quickly, even if you're only doing short journeys. Regarding the other comments about smoke, surely the fact that you've no smoke could be a result of the DPF catching it all, and clogging? If anyone knows more about this than I do then it'd be good to hear. Touch wood I'm still OK with mine, but one day I may need some of this advice myself! The turbo on mine seems a little more whistly in winter too, I rather like it! Still have that weird aux-belt tssh tssh noise but that wears off by the time I've got to Middleton :)


The fact that its meant to be a "lifetime" DPF is a bit of a concern too as my car has only done 50k!

I too get thd same as you Jon. Turbo whistle (which I like) and the tssh tssh belt noise.....

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