106 - white smoke from exhaust..
106 - white smoke from exhaust..
Author
Discussion

JP88

Original Poster:

8 posts

190 months

Thursday 24th June 2010
quotequote all
Hi,

I'm looking for some advice..

Had a Peugeot 106 for 3 or 4 days now, wih 88k on the clock, with timing belt, "head work", head gasket, and full service all within the last 6 months.

The exhaust is standard but very loud.. I guess there must be a hole somewhere but I've not managed to find it.

So far I've covered about 40 miles but spotted some white smoke accelerating out of a junction today. From that point on, I've been keeping a watchful eye in my rear view mirror and it seems the smoke gets worse under heavy acceleration. Once I'd got home, the white smoke was clearly visible at idle. Starting the car up again 4 or 5 hours later, there was no smoke, but it was back again under acceleration in 1st and 2nd gear particularly.. On the way home just now, the car would smoke heavily under acceleration at first, but then no smoke was visible if acceleration was continued in the higher gears..

From having a quick look under the bonnet, I've realised a few things -

- The valve rocker gasket is leaking oil quite badly
- The oil level does seem low on the dipstick
- The coolant is very dirty and brown, but the level is staying the same
- There is no reside or mayo under the filler cap

Most sources seem to suggest head gasket failure or a cracked head - but I would have thought both would have been seen too during the major overhaul 6 months ago. The car has done about 5k miles since the timing belt, headwork, and head gasket.

dan19evans

4,954 posts

191 months

Thursday 24th June 2010
quotequote all
white smoke from the exhaust is usually because the engine is burning coolant.

most likely problem is that the head gasket has blown, but if you say that there is no 'mayo' under the oil filler cap then this might not be the problem.

it could be something more serious like a cracked head, and if you say its had 'head work' then that would make me more suspicious of a cracked head

hope that helps

grumbledoak

32,415 posts

257 months

Thursday 24th June 2010
quotequote all
If you are very lucky it could be condensation burning off. But, it doesn't sound like it.

I'd go and sit down, if I were you.

It is very probably gasket or head. There aren't many other routes for water into the exhaust. And you've mentioned work done before you bought her.

dan19evans

4,954 posts

191 months

Friday 25th June 2010
quotequote all
grumbledoak said:
If you are very lucky it could be condensation burning off.
really doubt it. if it were condensation or maybe water in the exhaust system then it would just be steam coming from the exhaust. because he said 'white smoke' its most likely the antifreeze in the cooling system being burnt. looks like its going to be atleast a new head gasket job, which will cost you a fair bit in labour at a garage (unless your handy with the spanners)

sorry to say it, looks like you bought a lemon mate. frown

Poledriver

29,358 posts

218 months

Friday 25th June 2010
quotequote all
You will only get the 'mayo' if water is getting into the oil! Looks like the head gasket has gone and water is getting into the combustion chamber!

JP88

Original Poster:

8 posts

190 months

Friday 25th June 2010
quotequote all
Thanks for your replies everyone.

I guess it can only be bad news, then.. I'll take it down to my local garage, see what he thinks.

It does seem like I've been sold a bad 'un. I can't work out why the car didn't smoke until 40 miles after I bought it, though.. just bad luck? Or did the last owner put in place a temporary remedy? Are there any oil additives worth trying to get me through until I can get the car seen to (Tuesday)..


dan19evans

4,954 posts

191 months

Friday 25th June 2010
quotequote all
JP88 said:
Thanks for your replies everyone.

I guess it can only be bad news, then.. I'll take it down to my local garage, see what he thinks.

It does seem like I've been sold a bad 'un. I can't work out why the car didn't smoke until 40 miles after I bought it, though.. just bad luck? Or did the last owner put in place a temporary remedy? Are there any oil additives worth trying to get me through until I can get the car seen to (Tuesday)..
if it is the head gasket / head related problem, i dont think there is a 'temporary remedy'. it could just be bad luck that you bought the car just before the problem occured...

it would be pointless using an oil additive as it wont help any (as far as i know..), but u should be ok driving it until you can get it seen to (i wouldnt rag it though)

hope that helps smile

JP88

Original Poster:

8 posts

190 months

Saturday 26th June 2010
quotequote all
OK - a bit of progress, I think.

Just been out on a five mile trip, giving the engine as little revs as possible.

The rocker cover gasket is still leaking, and it's travelling down the block onto the manifold, oil filter, and I think the gearbox.

As I drove the car for the first few minutes, I didn't notice any white smoke at all.. this was the case until about 10 minutes in when a Astra behind me made the smoke clear with his headlights. A remedy seems to be to turn the heater to hot and full power. This seemed to almost stop the smoke entirely. However, the front of the car was now steaming, presumably as the oil burnt on the manifold. At no point did the fan kick in, so the rest of the engine can't have been that hot.

I just wonder if the oil leaking down near the exhaust system could produce the smoke.. and my head gasket is actually OK. I checked my coolant after the drive, and the level was the same.


Rollcage

11,345 posts

216 months

Saturday 26th June 2010
quotequote all
When you take the rad cap off ,does it boil over or hiss a lot - ie is the cooling system pressurising?


JP88

Original Poster:

8 posts

190 months

Saturday 26th June 2010
quotequote all
Yeah, the tank hissed loudly when I took the cap off.

Rollcage

11,345 posts

216 months

Sunday 27th June 2010
quotequote all
JP88 said:
Yeah, the tank hissed loudly when I took the cap off.
Was that with the car hot or cold - had it been stood long?

JP88

Original Poster:

8 posts

190 months

Sunday 27th June 2010
quotequote all
The car had just finished a 5 mile trip round town and the ignition had been off for about 20 seconds before I checked the coolant. So I guess the car was still very hot.

I'm taking the car to a local mechanic on Tuesday, but I'd love to be able to work this one out.

dan19evans

4,954 posts

191 months

Sunday 27th June 2010
quotequote all
JP88 said:
A remedy seems to be to turn the heater to hot and full power.
hmmmmm strange scratchchin