Coolant Coming Out Overflow Pipe????

[Nobby_N]

Since doing the Crank sensor the 320 has decided to use alot of water/coolent! Cant see any leaks and no mayo under cap. Give me a clue people to what i can look for next, cant see that ive knocked any thing fitting CPS, cap fits nice and tight but after a run it does seen to be a little looser??? Car runs fine and does not overheat!

[pacerpete]

Check the elbow that comes off the thermostat housing, they are usually pretty corroded and weak by now and are easily broken when rummaging around that area , which you will have been when removing / replacing the sensor. The fix involves a replacement housing , I have them in stock and mine are strong !

Have you started decontenting the sorry turd yet ? ready for its inevitable demise

[Nobby_N]

I filled the fooker up while its running and temperature will not go above have and not using any water, it seems to be when its driving along it losing it but soon as its stationary its fine and just cant see where its going, runs good but it maybe Ebay bound lol what do these rare quattroporte go for lol trouble is I do like it and think I may put some money into it.

[Nobby_N]

Right It seems when I rev it the water is coming out the overflow pipe that runs down too passenger side wheel, why is it doing this???

[Grrrmachine]

Because you overfilled it?

[gooner1]

Because you overfilled it?

Boom!!!!!!!!!!!

[Nobby_N]

No it emptied its self hence why I filled the fecker, why would coolent light keep coming on if it does not need it!!

[Nobby_N]

It empties the whole lot btw making the light come on

[Nobby_N]

Head gasket maybe?

[hennared323i]

Airlock? or thermostat failure?

You have pm btw

[Nobby_N]

I did try bleeding the system before the darkness came! Roll on the weekend, wish I was a bit more mechanically minded so I could bang a 2.5 in it as its pretty solid but never going to be a minter

[Nobby_N]

Well ive driven to work this morning, 10 miles through traffic and decent roads, ive just been to have a look and the cap was resting on front of the tank, cant see it would have blown off so maybe i left it off! Either way it has used no water and level is spot on??? what the feck is going on????

[daimlerman]

With the cap on,the system is pressurising.
Air is entering the system and blowing the coolant out.
Have you taken Pacerpete's advice,yet?

[Nobby_N]

With the cap on,the system is pressurising.
Air is entering the system and blowing the coolant out.
Have you taken Pacerpete's advice,yet?

Ive not had chance, If it was the housing then i would see water coming out would i not?

[daimlerman]

With the cap on,the system is pressurising.
Air is entering the system and blowing the coolant out.
Have you taken Pacerpete's advice,yet?

Ive not had chance, If it was the housing then i would see water coming out would i not?

Water is very sneaky stuff,it finds the easiest route out,in your case via the overflow pipe.
What you need to discover is why the bloody stuff is making a bid for freedom.
Pacer's post makes perfect sense to me,air is entering the system via a corroded alloy component and forcing water out via the overflow,aided and abetted by the water pump.

Obviously,both Pete and I are talking complete bollocks,in your usual style!

[Nobby_N]

??? how very rude, im not a mechanical hero like you Mr foooking Dulux and i do listen to Pete! I was saying that surely if the corroded housing Pete mentioned was the problem then surely i would see water, I will strip it down and have a look over weekend!

[daimlerman]

Any smoke from the chimney?

[Nobby_N]

Sorted now, I bled the system and got any air out and shes now not using coolent and running a treat! God knows how air got in the system as all I did was swap the CPS over but hey ho its running great!

[sweep]

No console for me then

[Nobby_N]

Lol

[daimlerman]

So you failed the basic item of bleeding the system properly!

Does this look like dulux(?) to you?

[Nobby_N]

Why would I need to bleed the system after a simple CPS replacement????

[sweep]

it was a under lieing issue by the sounds of it? did the previous owner smoke ronnies?

[Nobby_N]

It ran fine for 2 weeks then the cps foooked up and started using water so fooook knows, running or not it stands me at 400 quid so Im surely getting that back when she hits ebay lol

[sweep]

did it have water in the header tank or anti freeze?

[Nobby_N]

Coolent of some sort!

[sweep]

The previous owner was eager wasnt he....

[spook]

Did you drain the coolant and replenish like a good zoner Nobby?

[Nobby_N]

Did I foooooook! Its an old banger and never ganna be anything but, it will hopefully run till the mot runs out then be turned into a fridge!

[Nobby_N]