More on the EGR Bypass Valve....Modify or Leave alone - Page 33

bubs · 29th October 2014, 11:13

Out of interest did you change the gaskets when you took the manifold off, was thinking of removing mine (if only to get a bracket made for the vacuum thingy hiding underneath) and wondered if new gaskets were necessary.

DMGRS · 29th October 2014, 11:26

I didn't change mine, and everything is still OK. It may be worth giving them a quick bit of silicone spray to help keep the rubber supple.

hogweed · 29th October 2014, 13:06

Hhmmm, MAP sensor, you say... is it easy to get to/remove?

bubs · 29th October 2014, 13:28

It sits on the side of the manifold, on the left of the engine as you look at it. A bit fiddly to get to but not that bad (you'll need to take the engine cover off). It took me longer to retrieve the socket I dropped down the back of the HP pump than removing and cleaning the MAP sensor. There's a little gap right behind the pump that a socket fits into nicely that you can't get to with your hand or magnetic pick-up tool.

RPWC · 29th October 2014, 13:31

What do you clean the egr with? Mine is stuck open, according to T4 report.

Arctic · 29th October 2014, 15:34

Quote:

Originally Posted by bubs

Out of interest did you change the gaskets when you took the manifold off, was thinking of removing mine (if only to get a bracket made for the vacuum thingy hiding underneath) and wondered if new gaskets were necessary.

Hi Mike.
You can reuse the gaskets as I have found them to be hard wearing, but please do not contaminate with silicone spray or any other kind of substance just, if you feel you need to clean them then use a damp cloth, in your case if you are only moving the manifold to get to another part of the engine leave the gaskets in place. Arctic

http://www.the75andztclub.co.uk/foru...d.php?t=104653

Arctic · 29th October 2014, 15:49

back on track I still stand on the side of cleaning the EGR rather than the by pass, clean out with carb cleaner cheers Arctic

klarzy · 29th October 2014, 15:52

Quote:

Originally Posted by Arctic

back on track I still stand on the side of cleaning the EGR rather than the by pass, clean out with carb cleaner cheers Arctic

same here, just pull the vacuum pipe, if in the future you or a new owner needs it put back, just push the pipe on again..

HarryM1BYT · 29th October 2014, 16:51

Just to reiterate....

If you clean and refit and leave working, you will be faced with the regular cleaning of the EGR, manifold, possibly the MAP and maybe the inlets if they are coked up. If you disable or fit a bypass, you will have none of these issues, but emissions will be slightly worse overall, but left working as designed without any cleaning the emissions can be very much worse.

The MAP sensor is easily damaged. It is unlikely to be obstructed, but if you must clean it, there is a small tunnel or hole at its end through which it is designed to breath. If that hole is open, likely it is fine. Push anything too far down that hole and you can be certain you will damage the sensor.

RPWC · 29th October 2014, 21:04

Can I use IPA to clean the egr? That's Isopropyl alcohol, not beer lol

29th October 2014, 11:26	#322
DMGRS Discount MG Rover Spares Rover 75 CDTi, 2x MG ZS180 Join Date: Jun 2011 Location: Hythe, Southampton Posts: 11,320 Thanks: 456 Thanked 3,377 Times in 2,027 Posts	I didn't change mine, and everything is still OK. It may be worth giving them a quick bit of silicone spray to help keep the rubber supple. __________________ Your trusted MG Rover specialist! Tel: 02380 001133 / Email: [email protected] We now have a 'chat' function on our site for even quicker replies. Give it a try! Remember - discount code FORUM5 for 5% off

29th October 2014, 13:06	#323
hogweed I really should get out more....... Vauxhall Insignia CDTi; MG TF 135 Join Date: Jan 2010 Location: Norn Iron Posts: 2,958 Thanks: 942 Thanked 378 Times in 297 Posts	Hhmmm, MAP sensor, you say... is it easy to get to/remove? __________________ Past cars: MGB GT; Escort 1300 Sport; Vauxhall VX4/90; Marina Coupe TC; Celica ST (1972); Montego Turbo; Astra GTE 16V; Astra GSI 16V; Golf GTI 16V (Mk II); Sierra XR4x4 Estate; BMW 325i (E30); BMW M3 3.0; BMW M3 3.2 Evo. Left some of the more embarrassing ones out. And about 30 motorbikes.

29th October 2014, 13:31	#325
RPWC This is my second home 75 model car Join Date: Apr 2011 Location: Newcastle upon Tyne Posts: 20,177 Thanks: 4,008 Thanked 5,083 Times in 3,114 Posts	What do you clean the egr with? Mine is stuck open, according to T4 report. __________________ Cheers. Rich…

29th October 2014, 15:49	#327
Arctic 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	back on track I still stand on the side of cleaning the EGR rather than the by pass, clean out with carb cleaner cheers Arctic __________________ 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 "

29th October 2014, 16:51	#329
HarryM1BYT This is my second home 75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD Join Date: May 2010 Location: Leeds Posts: 17,273 Thanks: 2,160 Thanked 2,061 Times in 1,586 Posts	Just to reiterate.... If you clean and refit and leave working, you will be faced with the regular cleaning of the EGR, manifold, possibly the MAP and maybe the inlets if they are coked up. If you disable or fit a bypass, you will have none of these issues, but emissions will be slightly worse overall, but left working as designed without any cleaning the emissions can be very much worse. The MAP sensor is easily damaged. It is unlikely to be obstructed, but if you must clean it, there is a small tunnel or hole at its end through which it is designed to breath. If that hole is open, likely it is fine. Push anything too far down that hole and you can be certain you will damage the sensor. __________________ Harry How To's and items I offer for free, or just to cover the cost of my expenses... http://www.the75andztclub.co.uk/foru...40#post1764540 Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing. I've taken a vow of poverty. To annoy me, send money.

29th October 2014, 11:13	#321
bubs Posted a thing or two ROVER 75 Join Date: Oct 2012 Location: Canvey Island, Essex Posts: 1,651 Thanks: 43 Thanked 163 Times in 134 Posts	Out of interest did you change the gaskets when you took the manifold off, was thinking of removing mine (if only to get a bracket made for the vacuum thingy hiding underneath) and wondered if new gaskets were necessary.

29th October 2014, 13:28	#324
bubs Posted a thing or two ROVER 75 Join Date: Oct 2012 Location: Canvey Island, Essex Posts: 1,651 Thanks: 43 Thanked 163 Times in 134 Posts	It sits on the side of the manifold, on the left of the engine as you look at it. A bit fiddly to get to but not that bad (you'll need to take the engine cover off). It took me longer to retrieve the socket I dropped down the back of the HP pump than removing and cleaning the MAP sensor. There's a little gap right behind the pump that a socket fits into nicely that you can't get to with your hand or magnetic pick-up tool.

29th October 2014, 21:04	#330
RPWC This is my second home 75 model car Join Date: Apr 2011 Location: Newcastle upon Tyne Posts: 20,177 Thanks: 4,008 Thanked 5,083 Times in 3,114 Posts	Can I use IPA to clean the egr? That's Isopropyl alcohol, not beer lol __________________ Cheers. Rich…