406oc.co.uk

Hi, Need a little help please,

So 3 days ago i made the remap on my 406 coupe 2.2 hdi manual 2003,

3 days driving no issues at all !

Today i was driving and went thru a little water 1 foot high approx ( slow speed ) for about 25 meters..

All of a sudden anti pollution fault came up and noticed a lot of white smoke coming out from the exhaust ( keep in mind that i do NOT have a silencer so it is now like a straight pipe without DPF also ) Maybe white smoke was water that went in the exhaust ? Since after some time white smoke was over.

Also i noticed that no vacuum was present since the swirl valve was not opening and closing at all.

When pressing gas paddle on idle turbo still sounds spooling but well over 3500 revs. Tho no feel at all while driving

Could this be a blown turbo? Vacuum Leak? donno very confused !

Thanks for your help in advance

Firstly I would remove the air filter and see if its wet, if it is then dry it out really well and put it back. If its ruined the replace it, only about £8.

Have you also checked to see if the vacuum pipe from the left hand turbo solenoid hasn't been pulled off by the water.

I guess its possible the turbo or pipes have been affected from being red hot to ice cold from the water.....

Hi Ginger Magic !

Thanks for your quick response ,

Car was only running for about 5 minutes , i highly doubt that it was red hot.

Will be checking if the pipe from the turbo solenoid is still attached to the turbo. If this popped off with water the vacuum for the swirl valve also becomes disabled?

Water wasnt high enough to reach the airfilter

smbbob wrote: Water wasnt high enough to reach the airfilter

The air intake is quite low down, by the front wheel - check the thread regarding 'shallow water'.

If the pipe has popped off, you will lose vacuum which MAY affect the swirl valve.

As a thought, if you are missing the oval rubber bung in the wheel arches then water may have been sprayed over the MAP sensor, MAF sensor etc.

GingerMagic wrote:

smbbob wrote: Water wasnt high enough to reach the airfilter

The air intake is quite low down, by the front wheel - check the thread regarding 'shallow water'.

If the pipe has popped off, you will lose vacuum which MAY affect the swirl valve.

As a thought, if you are missing the oval rubber bung in the wheel arches then water may have been sprayed over the MAP sensor, MAF sensor etc.

Ginger Magic,

So i did as you told me and checked the air filter an was 60 % wet, im sure some water went in as i took off the first pipe from turbo to inter cooler pipes and there was also some water! ( not a lot )

I Cleaned everything from water including maf sensor and also Vacuum was now working again.

The only problem left which could be the biggest problem is that i checked the Oil cap and there was also signs of water as the cap had like grey fudge in it.. Tho the Dipstick had no signs of water or anything.. Also radiator water level was still on max, there was NO Change on water coolant

So i am guessing that some water from the road came in? But how could it mix with oil?

Thanks !

The grey stuff in the oil filler cap is only condensation and nothing at all to worry about!

jasper5 wrote:The grey stuff in the oil filler cap is only condensation and nothing at all to worry about!

This might help

I can't see how water could enter the engine sump or the cam cover except by condensation.

If you are worried about it do an oil and filter change.

jasper5 wrote:I can't see how water could enter the engine sump or the cam cover except by condensation.

If you are worried about it do an oil and filter change.

Thats also what i thought.. and if it was that there is a crack somewhere in the engine due to sucking some water from the inlet symptoms would be much worse right?


I mean car is now sounding good, all is left is that the turbo is acting a bit strange.. boost is coming over 2000 and sometimes 1500 its like varying. Turbo had some water in it so maybe i should give it time to completely dry out?

jasper5 wrote:The grey stuff in the oil filler cap is only condensation and nothing at all to worry about!

+1, I agree.

Give it time to dry out, maybe a good run will help.

GingerMagic wrote:

jasper5 wrote:The grey stuff in the oil filler cap is only condensation and nothing at all to worry about!

+1, I agree.

Give it time to dry out, maybe a good run will help.

Will do tomorrow, i just wanted to see from you if it was possible that it was a cracked head or block, but from what you are saying it has nothing to do with it .. Thank god

So after 2 days driving car seems to be performing better every day !

Just to take it off my mind if it had to be a cracked block it would have been felt right?

I am still checking radiator coolant level every time and no change at all

Dipstick also seems to be clear

Thanks a lot for your kind help gents !