Zt-t cdti 2003 white smoke when revved

sonicbreaks · 24th February 2012, 02:24

Hi guys, hope you can point me in the right direction here.
I've just bought a 53 plate zt-t+cdti 93000 miles and now discovered that if I rev the engine while stationary I get a fair bit of whiteish/greyish smoke from the exhaust. Seems ok while driving. I tried to get a good sniff of the smoke and it smelled mainly of diesel/exhaust fumes. Definitely no oily smell to it.
Any suggestions?

deeks · 24th February 2012, 06:41

i would check injectors incase 1 is over fueling but white smoke can also be caused my lack of pressure from the turbo so check things like o rings and turbo hoses for splits

sonicbreaks · 24th February 2012, 06:46

Quote:

Originally Posted by deeks

i would check injectors incase 1 is over fueling but white smoke can also be caused my lack of pressure from the turbo so check things like o rings and turbo hoses for splits

How do i check the injectors Deeks?

Mike Noc · 24th February 2012, 07:37

You could try running the engine with the MAF unplugged and see if things improve.

Mike

suffolk boy · 24th February 2012, 09:11

i may be wrong but white smoke is normally a sign of a bunged up egr valve clean it out with carb cleaner.do the pcv filter while you are at it.clouds of black smoke normally points to over fueling esp under acceleration ie overtaking etc.anyway doing both of the above will do no harm

deeks · 24th February 2012, 09:14

Quote:

Originally Posted by sonicbreaks

How do i check the injectors Deeks?

remove each 1 individually and see if there all running the same, if one is running irratic then that could possibly be the problem,
but like has been said i would try, cleaning the egr, i cleaned myn and blocked it off, i took the inlet off and cleaned that, put new o rings in, and few other little bits, ive removed my pcv filter aswell

HarryM1BYT · 24th February 2012, 10:33

Quote:

Originally Posted by sonicbreaks

Hi guys, hope you can point me in the right direction here.
I've just bought a 53 plate zt-t+cdti 93000 miles and now discovered that if I rev the engine while stationary I get a fair bit of whiteish/greyish smoke from the exhaust. Seems ok while driving. I tried to get a good sniff of the smoke and it smelled mainly of diesel/exhaust fumes. Definitely no oily smell to it.
Any suggestions?

You can discount the turbo, it doesn't kick in until >1,800 RPM. Could be injector(s), worth trying some injector cleaner. Also check/ clean/ replace the PCV.

sonicbreaks · 24th February 2012, 13:08

Thanks everyone, i did clean my PCV yesterday but will get a new filter asap. I have removed and plugged the vacuum pipe for my EGR but I haven't cleaned it out yet. I'll give that a go next.
No smoke when on boost while driving so I'm hopeful it has nothing to do with the turbo

Waiting for some Viton Orings from jules, had to fit some I had at work because the ones on it were completely recked. I'll check all my hose connections when i change the O rings.

More updates to follow

Thanks
Andy

thebiglad · 24th February 2012, 15:24

This white/grey smoke only occurs when parked, out of gear & revving the engine correct?

If that is the case, it couldn't just be condensation in the exhaust system could it? Or does it occur on a warmed-up engine as well?

In the either case, the first thing I would be doing is to remove the airfilter and see if the problem is still there. It could be over fuelling caused by a bad filter.

ramdonice · 24th February 2012, 17:24

could do this test to check the injectors

24th February 2012, 02:24	#1
sonicbreaks Avid contributor MG ZT-T + CDTi Copperleaf Red Join Date: Feb 2012 Location: Kidderminster Posts: 202 Thanks: 0 Thanked 0 Times in 0 Posts	Zt-t cdti 2003 white smoke when revved Hi guys, hope you can point me in the right direction here. I've just bought a 53 plate zt-t+cdti 93000 miles and now discovered that if I rev the engine while stationary I get a fair bit of whiteish/greyish smoke from the exhaust. Seems ok while driving. I tried to get a good sniff of the smoke and it smelled mainly of diesel/exhaust fumes. Definitely no oily smell to it. Any suggestions? __________________ NO LONGER CONTRIBUTING

24th February 2012, 09:11	#5
suffolk boy This is my second home fiat panda Join Date: Sep 2009 Location: haverhill Posts: 6,720 Thanks: 96 Thanked 586 Times in 526 Posts	i may be wrong but white smoke is normally a sign of a bunged up egr valve clean it out with carb cleaner.do the pcv filter while you are at it.clouds of black smoke normally points to over fueling esp under acceleration ie overtaking etc.anyway doing both of the above will do no harm __________________ fiat panda 1.2 eco

24th February 2012, 13:08	#8
sonicbreaks Avid contributor MG ZT-T + CDTi Copperleaf Red Join Date: Feb 2012 Location: Kidderminster Posts: 202 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks everyone, i did clean my PCV yesterday but will get a new filter asap. I have removed and plugged the vacuum pipe for my EGR but I haven't cleaned it out yet. I'll give that a go next. No smoke when on boost while driving so I'm hopeful it has nothing to do with the turbo Waiting for some Viton Orings from jules, had to fit some I had at work because the ones on it were completely recked. I'll check all my hose connections when i change the O rings. More updates to follow Thanks Andy __________________ NO LONGER CONTRIBUTING

24th February 2012, 06:41	#2
deeks Posted a thing or two MG ZT 2.0 DIESEL Join Date: Sep 2010 Location: Barwell Posts: 1,037 Thanks: 12 Thanked 10 Times in 10 Posts	i would check injectors incase 1 is over fueling but white smoke can also be caused my lack of pressure from the turbo so check things like o rings and turbo hoses for splits

24th February 2012, 07:37	#4
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,551 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	You could try running the engine with the MAF unplugged and see if things improve. Mike

24th February 2012, 15:24	#9
thebiglad Regular poster 75 Connoisseur SE CDTi Tourer Join Date: Nov 2011 Location: Guéret Posts: 39 Thanks: 0 Thanked 0 Times in 0 Posts	This white/grey smoke only occurs when parked, out of gear & revving the engine correct? If that is the case, it couldn't just be condensation in the exhaust system could it? Or does it occur on a warmed-up engine as well? In the either case, the first thing I would be doing is to remove the airfilter and see if the problem is still there. It could be over fuelling caused by a bad filter.

24th February 2012, 17:24	#10
ramdonice Avid contributor 75 Join Date: Aug 2011 Location: LOWESTOFT Posts: 241 Thanks: 0 Thanked 1 Time in 1 Post	could do this test to check the injectors