Blue and white smoke

Raymie75 · 30th May 2019, 16:13

I have just joined the forum after purchasing a 75 club ctdi tourer. I noticed the car seemed to be underpowered, although having never owned a 75 before, i didnt know what was normal. Then i noticed random blue smoke (oil) , and white (unburnt diesel). I was hoping it might be a severely choked egr valve, causing all this trouble. I stripped the egr to find what i suspected, the bore was down to a third of its original size. After an hours cleaning, and ultrasonics, i refitted it all to find the car struggled to start. I removed the vaccuum pipe and it started instantly! I messed around a bit, but decided to leave the vaccuum hose blanked for now. After test driving i found the car much more powerful, and you can faintly hear and feel the turbo now, this wasn't the case previously. I found the intercooler pipes slightly oily, although the car has not used any oil in 300 miles since purchase. The question is,, what is the problem with the car not running with vaccuum fitted, or do i leave it blank and fit a deleted egr pipe. As for the turbo, i am not convinced it is completely healthy, i had a runaway before, and i dont want another.

Best_of_British · 30th May 2019, 20:20

Search on here for:

*. Intercooler O Rings

*. PCV filter

*. MAFF issues.

If you stop the leak at intercooler, ensure PCV is not blocked and maybe unplug the MAFF to see if it improves. Your car may be original 116ps tune, which makes pulling out from roundabouts a bit more fun. A remap will sort that. The turbo's are very solid, it does not work hard as you have noticed, don't expect to be thrown back in seat, you can just about feel it kick in.

Sent from my Redmi 4A using Tapatalk

bl52krz · 30th May 2019, 20:24

If the egr was in such a bad state, I bet the pcv filter is in the same condition. Have you checked the air cleaner also?

BigRuss · 30th May 2019, 20:50

The turbo's on the diesels are Mitsubishi, are very reliable, and don't usually cause problems.

As above the intercooler seals probably need replacing with Vitron ones, the originals swell and cause oil around the bottom of the intercooler hose.

Russ

Arctic · 30th May 2019, 20:51

Hi Raymie.
As above check the intercooler O-rings and replace with Viton ones, depending on how the EGR was cleaned you may have damaged diaphragme in the EGR?

Also if the EGR was clogged up so will the manifold & the MAP sensor, remove the manifold from the car remove the seals, once removed then take off the MAP sensor bolted to the side of the manifold clean that with a rag sprayed with carb cleaner do not poke anything into the hole of the MAP sensor.

Clean out the manifold you can use oven cleaner/ or engine cleaner leave it soaking for at least a couple of hours more if you can, then jet wash it out until clean inside refit the seals can be reused.

Check & replace the PCV filter and air filter, then report back to the thread

Raymie75 · 31st May 2019, 09:12

Thanks for all the replies, any pics of the intercooler seals? And yes i had a quick look at the pcv valve, it was in a mess, i will order a new one and revisit this, the inlet manifold was quite oily too. As for the turbo,, it certainly seems like it has an easy time, compared to my audi a4 tdi.

Arctic · 31st May 2019, 09:32

Hi Raymie.
here you go link below but you can get to them better if you remove the front bumper, I do them regular at our meets as I have the bends already made up with the Viton O-rings attached so swap them over in about 10 minutes.

https://www.the75andztclub.co.uk/for...93&postcount=4

Viton O-rings can be purchased here.
https://www.dmgrs.co.uk/collections/...er-o-rings-kit

macafee2 · 31st May 2019, 14:17

when washing the inlet manifold, expect a heck of a lot of dirty water to come out

macafee2

Raymie75 · 31st May 2019, 15:33

Thanks Arctic.

Raymie75 · 2nd June 2019, 18:28

Looks like i spoke too soon,, after topping up the oil, 750ml, i noticed blue smoke, a lot!! When driving along even under light load. After a mile or so it just stopped. When a reached my destination i revved the engine at a standstill, but not a drop of smoke. On the way home, before i parked, the smoke reappeared. I havent changed the really oily pcv oil separator yet, i hope it is this and nothing more sinister.

30th May 2019, 16:13	#1
Raymie75 Newbie 75 tourer Join Date: May 2019 Location: Greenock Posts: 14 Thanks: 4 Thanked 1 Time in 1 Post	75 club 2.0 cdti, tourer. Blue and white smoke I have just joined the forum after purchasing a 75 club ctdi tourer. I noticed the car seemed to be underpowered, although having never owned a 75 before, i didnt know what was normal. Then i noticed random blue smoke (oil) , and white (unburnt diesel). I was hoping it might be a severely choked egr valve, causing all this trouble. I stripped the egr to find what i suspected, the bore was down to a third of its original size. After an hours cleaning, and ultrasonics, i refitted it all to find the car struggled to start. I removed the vaccuum pipe and it started instantly! I messed around a bit, but decided to leave the vaccuum hose blanked for now. After test driving i found the car much more powerful, and you can faintly hear and feel the turbo now, this wasn't the case previously. I found the intercooler pipes slightly oily, although the car has not used any oil in 300 miles since purchase. The question is,, what is the problem with the car not running with vaccuum fitted, or do i leave it blank and fit a deleted egr pipe. As for the turbo, i am not convinced it is completely healthy, i had a runaway before, and i dont want another. Last edited by Raymie75; 30th May 2019 at 16:32..

30th May 2019, 20:24	#3
bl52krz This is my second home Rover 75 cdt club + Rover 2.5 KV6 Conni SE Join Date: May 2008 Location: Birmingham Posts: 11,387 Thanks: 6,587 Thanked 2,262 Times in 1,729 Posts	If the egr was in such a bad state, I bet the pcv filter is in the same condition. Have you checked the air cleaner also? __________________ Great Barr, Birmingham.

30th May 2019, 20:50	#4
BigRuss 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	The turbo's on the diesels are Mitsubishi, are very reliable, and don't usually cause problems. As above the intercooler seals probably need replacing with Vitron ones, the originals swell and cause oil around the bottom of the intercooler hose. 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.

30th May 2019, 20:51	#5
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,701 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	Hi Raymie. As above check the intercooler O-rings and replace with Viton ones, depending on how the EGR was cleaned you may have damaged diaphragme in the EGR? Also if the EGR was clogged up so will the manifold & the MAP sensor, remove the manifold from the car remove the seals, once removed then take off the MAP sensor bolted to the side of the manifold clean that with a rag sprayed with carb cleaner do not poke anything into the hole of the MAP sensor. Clean out the manifold you can use oven cleaner/ or engine cleaner leave it soaking for at least a couple of hours more if you can, then jet wash it out until clean inside refit the seals can be reused. Check & replace the PCV filter and air filter, then report back to the thread __________________ 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 "

31st May 2019, 09:32	#7
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,701 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	Hi Raymie. here you go link below but you can get to them better if you remove the front bumper, I do them regular at our meets as I have the bends already made up with the Viton O-rings attached so swap them over in about 10 minutes. https://www.the75andztclub.co.uk/for...93&postcount=4 Viton O-rings can be purchased here. https://www.dmgrs.co.uk/collections/...er-o-rings-kit __________________ 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 "

30th May 2019, 20:20	#2
Best_of_British Gets stuck in Rover 75 Tourer & Arden Green Project Join Date: Jul 2012 Location: Ormskirk Posts: 932 Thanks: 159 Thanked 200 Times in 155 Posts	Search on here for: . Intercooler O Rings . PCV filter *. MAFF issues. If you stop the leak at intercooler, ensure PCV is not blocked and maybe unplug the MAFF to see if it improves. Your car may be original 116ps tune, which makes pulling out from roundabouts a bit more fun. A remap will sort that. The turbo's are very solid, it does not work hard as you have noticed, don't expect to be thrown back in seat, you can just about feel it kick in. Sent from my Redmi 4A using Tapatalk

31st May 2019, 09:12	#6
Raymie75 Newbie 75 tourer Join Date: May 2019 Location: Greenock Posts: 14 Thanks: 4 Thanked 1 Time in 1 Post	Thanks for all the replies, any pics of the intercooler seals? And yes i had a quick look at the pcv valve, it was in a mess, i will order a new one and revisit this, the inlet manifold was quite oily too. As for the turbo,, it certainly seems like it has an easy time, compared to my audi a4 tdi.

31st May 2019, 14:17	#8
macafee2 This is my second home Rover 75 Saloon & Tourer Join Date: Sep 2012 Location: Lincoln Posts: 14,912 Thanks: 1,630 Thanked 3,032 Times in 2,181 Posts	when washing the inlet manifold, expect a heck of a lot of dirty water to come out macafee2

31st May 2019, 15:33	#9
Raymie75 Newbie 75 tourer Join Date: May 2019 Location: Greenock Posts: 14 Thanks: 4 Thanked 1 Time in 1 Post	Thanks Arctic.

2nd June 2019, 18:28	#10
Raymie75 Newbie 75 tourer Join Date: May 2019 Location: Greenock Posts: 14 Thanks: 4 Thanked 1 Time in 1 Post	Looks like i spoke too soon,, after topping up the oil, 750ml, i noticed blue smoke, a lot!! When driving along even under light load. After a mile or so it just stopped. When a reached my destination i revved the engine at a standstill, but not a drop of smoke. On the way home, before i parked, the smoke reappeared. I havent changed the really oily pcv oil separator yet, i hope it is this and nothing more sinister.