|
||
|
3rd February 2020, 21:39 | #1 |
Avid contributor
MG ZT Join Date: Mar 2019
Location: Plymouth
Posts: 109
Thanks: 5
Thanked 9 Times in 8 Posts
|
EGR replacement advice please!
Hi all, my 04 cdti isn't great on fuel around town, noticeably so over my old ztt. Current zt does around 32-35mpg, ztt always got high 30's.
There's also a little cough/flatspot around 1800-2000rpm, bit of black smoke now and again and the exhaust fumes smell really bad. What's the advantage of these bypass kits I'm seeing on ebay over just blanking the pipe off at the exhaust manifold end? I've tried crimping the Egr valve vacuum inlet over to stop it opening, it's made a difference but not as much as I'd like. Any reason I can't just make up a plate as above as long as the Egr valve is sealing? |
3rd February 2020, 21:47 | #2 | |
This is my second home
75 CDT Auto Tourer , Rover 45 , Astra, Zaffira, Chev Captiva Join Date: Mar 2011
Location: Wilts
Posts: 3,342
Thanks: 203
Thanked 436 Times in 360 Posts
|
A plate (disc) will do the trick, as long as it is the correct size and thickness. Many of us have taken the innards out of the OEM one, machined bits to fit and have the disc in place. Looks OEM for MOT and works fine.
Cleaning everything is a must as well, a horrible dirty job that makes a big difference. The MAP (boost pressure) sensor in the inlet manifold also gets gummed up and cause issues. This is NOT the MAF. Quote:
__________________
Chrome skull caps, EGR cleaned (original housing), Mondeo lower mounting, 12V outlets in the armrest and tourer boot, cat fixed, working FBH, Lidl plenum covers, DD with reverse camera.New speakesr/Tweeters with MDF rings. wood dash, Memory leather seats, wooden finished steering and handbrake, Xenon headlights. |
|
3rd February 2020, 21:52 | #3 |
Avid contributor
MG ZT Join Date: Mar 2019
Location: Plymouth
Posts: 109
Thanks: 5
Thanked 9 Times in 8 Posts
|
Thanks Spyder, I'd read somewhere that blanking it that way can cause the supply pipe to crack though, is that correct and was why I was wondering about blocking it at the manifold end?
I'll take a look at the MAP too thanks, hadn't thought of that. |
3rd February 2020, 22:07 | #4 |
Premium Trader
75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007
Location: Liversedge, West Yorkshire
Posts: 5,405
Thanks: 1,105
Thanked 1,340 Times in 661 Posts
|
You don't need a blanking plate just disconnect and plug the vacuum pipe that will do the trick
Russ
__________________
Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details. |
4th February 2020, 06:32 | #5 |
Avid contributor
MG ZT Join Date: Mar 2019
Location: Plymouth
Posts: 109
Thanks: 5
Thanked 9 Times in 8 Posts
|
Thanks Russ, would that not be what I've done by crimping the Egr valve vacuum inlet over, as only a slight improvement since I did that?
|
4th February 2020, 07:23 | #6 |
Premium Trader
Rover 75 Join Date: Nov 2010
Location: Devon
Posts: 33,769
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
|
I blanked mine off at the manifold, no problems at all, I have seen more than one egr pipe fracture when a bypass is fitted to the autos for some reason?
__________________
Lest we forget..
|
4th February 2020, 11:25 | #7 |
Give to Learn
Freelander 2 Join Date: Aug 2010
Location: West Midlands
Posts: 18,716
Thanks: 1,155
Thanked 6,407 Times in 3,874 Posts
|
AS above you can gut the original EGR blank of it's end and inner section, also fit a screw into the valve vacuum inlet, and file nice and round, cleanout the manifold, give the MAP sensor a clean, do not poke anything into the end of the MAP senor.
1 2 3 4 You need to get the manifold clean inside like this below. 5 The MAP sensor may well look like this. 6 You want it to look like this. 7 Cleaned a few out recently 8 9 10 Also check the intercooler O-rings replace with Viton if you have not done it over the last few years. Is your engine getting up temp or do you have the failing thermostat issue, opening to early, if so an inline stat will help with part of the remedy to the MPG
__________________
Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise " Last edited by Arctic; 4th February 2020 at 11:28.. |
4th February 2020, 21:56 | #8 |
Avid contributor
MG ZT Join Date: Mar 2019
Location: Plymouth
Posts: 109
Thanks: 5
Thanked 9 Times in 8 Posts
|
Thanks arctic, so if I gut the Egr valve and put a disc in there the supply pipe from the manifold won't split?
How did you get the disc to stay in there, JB weld or something? Yeah my manifold needs a clean then it's full of sticky carbon! First thing I did was the renault 5 thermostat mod as when I picked it up it was billowing black smoke under load and not warming up. I did the vitron rings on my old mk 1 ztt but I had an admittedly quick look the other day and it looked as though the mk 2 had a different intercooler? |
5th February 2020, 07:02 | #9 | ||
Give to Learn
Freelander 2 Join Date: Aug 2010
Location: West Midlands
Posts: 18,716
Thanks: 1,155
Thanked 6,407 Times in 3,874 Posts
|
Quote:
I have not seen any supply pipe split yet in the last 11 years, but have heard of them, my first tourer had it for 6 years and was still ok when I sold it on. I did not use a disc I use an alloy bar, metal discs have been used as have 2p pieces then held in with JB Weld. 1 2
__________________
Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise " Last edited by Arctic; 5th February 2020 at 07:05.. Reason: Photo Editing |
||
9th February 2020, 20:03 | #10 | |
Avid contributor
MG ZT Join Date: Mar 2019
Location: Plymouth
Posts: 109
Thanks: 5
Thanked 9 Times in 8 Posts
|
Quote:
|
|
|
|