New head gasket problems - Saxperience

Alexa · 5th May 2019, 10:12

How can I check if the HG is changed properly?Can compression test show that?

What if the compression is higher/lower than nominal?

I'm having problem on 1.1 with cooling after HG change.

MartinObviously · 7th May 2019, 22:10

Quote:

Originally Posted by Alexa

How can I check if the HG is changed properly?Can compression test show that?

What if the compression is higher/lower than nominal?

I'm having problem on 1.1 with cooling after HG change.

Did you (or whoever did the work) bleed the cooling system the correct way?

Engine off and cold. using a bottle upside down in the radiator. Bleed the radiator, thermostat housing and then the heater matrix cap in that order?

Alexa · 8th May 2019, 07:40

It has been done,but I forgot to turn on heating,it was done later.What I don't like is there is no engine gauge to show temp,only warning light.
What is the difference between engine temp sensor and coolant temp sensor,since they both use coolant as medium for temp reading?

After driving for about 30km engine stops.After I opened bonnet main fuel line was disconnected from fuel rail and fuel was poring drooping close to engine luckily nothing happened, I noticed the overheating and fan was not running, after I added more water later hi did turned on but for very short time, hoses where still very very hot .It could be thermostat or temp sensor I'm not sure.

MartinObviously · 8th May 2019, 21:25

Quote:

Originally Posted by Alexa

It has been done,but I forgot to turn on heating,it was done later.What I don't like is there is no engine gauge to show temp,only warning light.
What is the difference between engine temp sensor and coolant temp sensor,since they both use coolant as medium for temp reading?

After driving for about 30km engine stops.After I opened bonnet main fuel line was disconnected from fuel rail and fuel was poring drooping close to engine luckily nothing happened, I noticed the overheating and fan was not running, after I added more water later hi did turned on but for very short time, hoses where still very very hot .It could be thermostat or temp sensor I'm not sure.

If the warning light isn't on, it's not overheating.

There are 2 sensors, one coolant sensor is for the warning light inside the car, the other is for the ECU temp reading.

The fan is controlled by a separate switch on the radiator.

If the radiator is cold, it could be a stuck thermostat. that's like a 5 euro fix. but you absolutely MUST bleed the coolant the correct way after changing it.

The heater in the car has NO effect on the cooling system, as it is "always open" with no valve for the water flow.

Alexa · 9th May 2019, 19:28

Thanks, Martin.

Alexa · 16th May 2019, 16:16

Since 1.1 doesn't have eng. temp gauge only warning light I would like to install this
Universal Water Temp Gauge

Can I replace eng temp sensor that is in engine head with this universal sensor or I have to use this combination and cut the hose before thermostat .

MartinObviously · 16th May 2019, 16:22

I would put it in the top hose, yes.

Alexa · 16th May 2019, 21:25

Thanks Martin,there are a lot of interesting gadgets like oil pressure or temp gauge,voltage... that you can play with and add on central console or somewhere else, so I was thinking first to start with this one.Since eng temp. sensor is connected to ECU, and it's probably not a good idea to disconnect that, I think you suggestion does make sense.

MartinObviously · 16th May 2019, 22:59

Yes best to keep it well away from any of the standard points.

I have my oil pressure and temperature fed from a sandwich plate behind the oil filter. just makes things easy.

Jonathancilia · 22nd May 2019, 17:15

I installed one of those gauges for coolant in the picture, its been working great for almost 2 years

it was dumb of citroen to not make a temp gauge on the diesel and only a bulb, which pretty much means the engine is toast at that point Sent from my SM-T560 using Tapatalk

MartinObviously · 22nd May 2019, 17:41

Quote:

Originally Posted by Jonathancilia

I installed one of those gauges for coolant in the picture, its been working great for almost 2 years

it was dumb of citroen to not make a temp gauge on the diesel and only a bulb, which pretty much means the engine is toast at that point Sent from my SM-T560 using Tapatalk

Nah the 1.5D is good for cooling

I roasted mine on track with a supercharger and it still didn't get hot.

Jonathancilia · 22nd May 2019, 17:42

Wow, well if i must say it is good at cooling, i have a lada samara and it gets super hot very quicky (even though it doesnt overheat) depends on the engine i guess Sent from my SM-T560 using Tapatalk

MartinObviously · 22nd May 2019, 23:04

Quote:

Originally Posted by Jonathancilia

Wow, well if i must say it is good at cooling, i have a lada samara and it gets super hot very quicky (even though it doesnt overheat) depends on the engine i guess Sent from my SM-T560 using Tapatalk

To be fair, you're right that all the petrol engines get hot really quickly.

Probably all in the design of the cylinder head I think

Alexa · 25th May 2019, 07:27

Quote:

Originally Posted by Jonathancilia

I installed one of those gauges for coolant in the picture, its been working great for almost 2 years

it was dumb of citroen to not make a temp gauge on the diesel and only a bulb, which pretty much means the engine is toast at that point Sent from my SM-T560 using Tapatalk

Great to hear first hand experience, It's not that expensive to do that and it can save you a lot of trouble.

Jonathancilia · 25th May 2019, 07:28

Yeah, they are cheap. Mine was 10 bucks and still works lol

Sent from my SM-T560 using Tapatalk

Jonathancilia · 25th May 2019, 09:55

I found a digital gauge worked better, i bought a normal one with the needle and it wasnt reading accurately, but thats just maybe coincedence dont know exactly. I used the gauge in the picture and the extension to insert in the top radiator hose i think that was around 34mm cant remember exactly. I grounded the sensor with a fire to the power steering bracket. The sensor wire (green) i routed to the back of the fender and into the cabin. And if i remember correctly i spliced into the ignition wires for power and i grounded the gauge with the bolt that holds the inner carpet in to the chassis.

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