Technical When I start the Cinq, smoke comes out.

[prompon]

When I start the Cinq, smoke comes out. The colour of the smoke is like greyish whiteish. Cannot really tell the colour. The smell is like of oil and some petrol of the same time. The car has oil. This happens when I start it in the morning and when its cool. The temperature still rises till next bar above 90 and the fan kicks in, not for long. The system is bled. The water pump has been changed and even the coolant. Gave it 50/50 Paraful ready mixed. What is the problem now?

Thanks for the help.

 

[rallycinq]

Are you losing any fluids?

Cheers

SPD

 

[fingers99]

If not loosing fluids, check the breather: is it blocked, do fumes come out of it?

 

[prompon]

No, no fluids are being lost. I see nothing on the floor in the morning. But the fuel comsuption has increased. 192M with 32Litres of petrol. Where is the breather? One thing I forgot to mention is that I have two noises. One is a scream, it increased when I rev the car and the other one is a rattle noise done when its idle until 1300 rpm. These noises are coming from where the timing belt is.

 

[Pep0]

I'd remove the air filter, housing, same reason '99 is addressing.

Symptom is typical of Citroen 2cv when parked on camber, oil seeps through rings - smoke on starting.

 

[fingers99]

The breather comes out of the cam cover.

The rattle is likely to be valve clearances. The scream may be alternator or cam belt tensioner -- only real way to find out is to either disconnect the alternator belt or use a stethescope (or a long screwdriver, blunt end to ear) to find out.

 

[prompon]

So what should I do to stop this? The gasket?

 

[fingers99]

Stop what?

If the breather is blocked, soak it overnight in petrol (etc.) wash it out and re-attach.

If it's fuming, do dry and wet compression test (to see whether the valves or bore wear are responsible).

For the rattle, check the valve clearances and re-shim as appropriate.

For the screech, replace alternator or bearings or replace timing belt and tensioner (depending on what makes the noise).

 

[prompon]

Understood. Going to check the breather now. The rest is all for the mechanic to tell to look out and replace.

 

[Pep0]

The breather may clog because of the duty cycle of the engine, my roadster needs the breather cleaned every 10k miles other wise it uses a lot of oil been doing it for 80k miles.

Cruising for several hours at indicated 75mph.

Noel

 

[rallycinq]

Having said all that, the OP is not losing oil, so it can't be oil thats burning.

It might be a temp sensor sending too much fuel on start up, partcularly as he has noted an increase in fuel consumption.

Cheers

SPD

 

[craigb244]

:yeahthat: could be coolant or air temp sensor

 

[prompon]

The breather is fine and clean. I change the temp sensor about 1 month ago. Nothing happened when I changed it. Do not know why it is doing this. People are telling me that its the head gasket and cylinder head...

 

[fingers99]

Well, often white smoke does indicate head gasket. Did you get a compression test done?

 

[rallycinq]

If the head gasket has gone then you will be losing water, which you aren't, unless its gone between cylinders, but that would only give a lumpy idle with no loss of fluids.

Which temp sensor did you change?

Cheers

SPD

 

[fingers99]

But note that loosing fluids does not necessarily mean a big puddle on the floor!

One thing that can also cause white smoke is Redex.

 

[fingers99]

But note that loosing fluids does not necessarily mean a big puddle on the floor!

One thing that can also cause white smoke is Redex.

 

[rallycinq]

But note that loosing fluids does not necessarily mean a big puddle on the floor!

I assumed the OP was actually checking the levels rather than looking for a puddle.

Cheers

SPD

 

[Pep0]

The 2CV does a lot of white smoke on start up on very little oil consumption, dont think one should park it on camber, aircraft radial engines need to be reverse rotated twice to avoid damage, from oil in cylinders on start up.

Noel

 

[prompon]

I changed the blue temperature sensor which is going in the inlet manifold. I changed it because the injector light was coming when it snapped for me when I was cleaning the engine... Very fragile! I see no fluids on the floor and neither droplets of any kind of fluid. The car does consume oil. I mean after 2000 miles I have to top it up again. I think that it is the head gasket as its overheating and doing this white smoke, but what I noticed now is that, two days ago I was late and I had a date and so I reved the engine and was doing high speeds. Did not know that this Cinq does more then 140 KM/hr. I was impressed. Now the white smoke stopped coming out when I start it but it still overheats and the fan stays on for 5 seconds. The colour of my fan switch is black while of my friends its blue and it stays on for 2 minutes min. My friends temperature needle stays a bit below the 90 even when in traffic and when leaving the car for 30 minutes on idle. The highest temperature which the car reaches is the next bar above the 90. This car is driving me insane!