More Coolant loss

janker · 16th October 2021, 07:12

Hi ,I have a petrol 190 V6 which has recently started to push water out of the header Cap when it feels like it.
I can run it for an hour ticking over and my temp gets upto 81 degrees without pushing anything out, Take it for a run 5 miles check again and coolant on header tank ?

The Jobs ive done in the past are new water pump when belts changed 1 year ago, New Kaiser metal stat and pipes and O rings, Recently new radiator as looked suspect in places, 2 new header caps. It has had new temp sensor and digital display fitted so its accurate and i have confirmed with instrument cluster test too.

No signs of water in the oil or mayo in the oil cap, No leaks in the V of the engine or anywhere else i can see.

Tested all 3 fan speeds are working using Toaf.

Heater gets nice and hot in the car , Bled it several times with tank in the air and bleed screw open im getting stuck for ideas now ??

It seems to be more of a pressure issue than a water leak ??

Any suggestions appreciated cheers

16th October 2021, 07:12	#1
janker Loves to post Rover 75 Saloon & MGZT 190 Join Date: Jun 2012 Location: Leek Posts: 390 Thanks: 333 Thanked 57 Times in 39 Posts	More Coolant loss Hi ,I have a petrol 190 V6 which has recently started to push water out of the header Cap when it feels like it. I can run it for an hour ticking over and my temp gets upto 81 degrees without pushing anything out, Take it for a run 5 miles check again and coolant on header tank ? The Jobs ive done in the past are new water pump when belts changed 1 year ago, New Kaiser metal stat and pipes and O rings, Recently new radiator as looked suspect in places, 2 new header caps. It has had new temp sensor and digital display fitted so its accurate and i have confirmed with instrument cluster test too. No signs of water in the oil or mayo in the oil cap, No leaks in the V of the engine or anywhere else i can see. Tested all 3 fan speeds are working using Toaf. Heater gets nice and hot in the car , Bled it several times with tank in the air and bleed screw open im getting stuck for ideas now ?? It seems to be more of a pressure issue than a water leak ?? Any suggestions appreciated cheers __________________ This vehicle was the 53,401st 75 to run off the production line, out of 112,381 This vehicle was the 2,551st 75 CDT Club to be made out of 3,403 This vehicle was the 5,192nd 75 in White Gold Metallic (code: GMN) to be made out of 12,251 White Gold Metallic 75s My New Addition MGZT 190 Trophy Blue 2001 Petrol. Last edited by janker; 16th October 2021 at 07:14..