An Engine Leak

[Aunt Sally]

I've noticed a leak just above the crank sensor. What on earth is causing it? It's green in colour. The cars running normal. Any ideas? 206 cc 02 plate.

[GrandadMonkey]

Green? Could it be antifreeze coolant mixture. Head gasket weeping?

[robbie44]

What is a crank sensor ? you mean temp sensor ?Grandad monkey is correct. Anti Freeze!!

[GrandadMonkey]

robbie44, the crankshaft position sensor is situated on the front face of the transmission housing and the head gasket joint will be above that.

[Aunt Sally]

Grandad Monkey... You are correct! I've had a couple of people take a look and they have said the same. Thanks for that. Will it be costly to fix? Have you heard of that product called 'Steel Seal'? Is it anygood? x

[GrandadMonkey]

I'm not really a believer or a fan in these additive products but as a head gasket replacement will set you back at least a couple of hundred pounds, you may feel that Steel Seal is worth a try at £30 a throw on a 7 year old car. To give it the best chance DO follow the instructions to the letter - no short cuts! Good luck!

From Steel Seal's website:-

"If you have tried inferior products or run an antifreeze other than an etheleyne glycol flush your cooling system with water after disconnecting bottom radiator hose. Do not use a flushing agent.

If you have flushed system reconnect bottom radiator hose.

Engine must be cold, turn the heater to maximum but not the fan.

Using factory recommended antifreeze (etheleyne glycol), pre- mix Two Litre of water and one litre of antifreeze with recommended amount of Steel Seal. Do not use with any other antifreeze! Before starting the engine, pour the pre-mixed solution into the radiator or header/overflow tank first, then top up the radiator/cooling system if is not yet full with an additional mixture of 50% water and 50% antifreeze.

Tighten the radiator cap back on.

Start the engine. Holding the Revs at around 1,000RPM. Continue this process until the temperature has reached 210f/99c degrees (This is normal operating temperature, just wait untill the fan has kicked in) then stop the engine and allow it to cool for one hour. After the engine is cool, start it again and be certain that the temperature reaches 210f/99c degrees again and then allow it to call once again. Repeat this step one more time within the same day. After the thermostat has opened release all air within the system and top up the radiator with more coolant if required, replace radiator cap on tight let the engine cool completely.
Now you can drive vehicle as usual.
To carry out the above sounds more complicated than it is. It is a relatively simple activity. "



"Additional Directions
These directions are for people that have a lot of pressure building in the cooling system, usually shown as bubbling in the header tank or air forcing past the coolant cap.



Locate the cylinder causing the bubbling in the overflow tank or backpressure. (Remove plugs one at a time till bubbling stops)

Follow the directions above up to and including No.5.

Before starting the engine, remove the spark plug or injector from the cylinder that was causing the bubbling in the overflow tank or backpressure. If accessible, remove injector wire from that cylinder. This will limit the amount of unburned fuel going into the combustion chamber.

If you can not find the spark plug that is missing, run the engine with the coolant level down to the top of the radiator core and with the radiator cap off.

Continue with direction No.6 above. Make sure to run the engine two times up to temperature with the spark plug /Injector out and for the one final time with the spark plug/injector back in place. "

[David William]

Its Very difficult to tell the exact reason for this problem but i guess one of these may be the reason for your problem...
1.Head gasket,
2.cam position sensor,
3.Oil pan area leaks.
I am telling you few steps you can follow to overcome this kind of problem...
Step1-
Shift the peugeot's transmission into "Park," and turn off the engine. Apply the emergency brake, open the hood, and allow the engine to cool for at least 60 minutes.
Step2-
Locate the oil pressure sensor. It is on the right-rear side of the engine block, between the engine and the firewall. It is made from black plastic and shaped like a roll of quarters.
Step3-
Disconnect the oil pressure sensor's electrical connector, and remove the sensor from the block using a 1-inch box-end wrench.
Step4-
Install the new sensor into the block using a 1-inch box-end wrench. Reconnect its electrical connector, start the engine, and check to make sure there are no leaks.

[GrandadMonkey]

Who said it was an automatic? Why have you waited 3 years to enlighten us all? Explain yourself David William.

[Capncol]

Look at the Americanisms (is that even a word?) Cut & paste from an American site I would say.
Thanks for your input David & welcome to the forum.

[gazza82]

But then it also says it's replacing the oil pressure sensor ... which it totally off track .. so not that helpful!