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15th November 2021, 09:22 | #1 |
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MG ZT 1.8t+. No.3 of 4 in Sunspot Yellow & Ford Fiesta in Black. Join Date: Aug 2010
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Lots of steam
Just when you think that my troubles with are Banana are over, then she throws up a new problem.
Back in February I had a new radiator fitted, and I put on a new radiator cap, bought from DMGRS. Yesterday we had lots of steam coming out of the overflow pipe. When removing the radiator cap there appeared to be no pressure noise. I keep the coolant at the correct level. No oil in the water or water in the oil. Oil cap is clean and the dipstick is showing the correct level. Started with the onboard diagnostic check and temperature was showing 92 degrees. So we carried on with our trip. The temperature needle stay at the quarter to nine position and I ran with the diagnostic check showing on the dash. On the downhill sections the temperature dropped to 81 and on the uphill bits it went up to 90. Done a round trip of 80 miles and she pulled like a train. Got home to be greeted by more steam coming out of the overflow pipe. Been out this morning and no coolant to be seen. I have put about half a pint in. Could it be the Pressure Relief Thermostat that is playing up? It was last replaced about 8 years ago.
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233,509. Thats our 3rd meet done. Might go again next weekend. onen hag oll |
15th November 2021, 09:36 | #2 | |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
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Quote:
The initial possible diagnosis is that your cooling system isn't pressurising properly. Remove the DMGRS expansion tank cap and re-fit the original. Repeat a journey involving uphill and downhill sections. Is there an improvement? Simon
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15th November 2021, 12:13 | #3 |
Moderator/Club Shop
MG ZT 1.8t+. No.3 of 4 in Sunspot Yellow & Ford Fiesta in Black. Join Date: Aug 2010
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No more steam
Many thanks Simon.
Changed the cap, took her for a good run. Never once went over 88 degrees and even dropped to 79 on a downhill section.
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233,509. Thats our 3rd meet done. Might go again next weekend. onen hag oll |
15th November 2021, 15:39 | #4 | |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
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Quote:
It appears that you have a defective seal somewhere in the system. It will be tricky finding it but start with the basics:
Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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15th November 2021, 17:54 | #5 |
This is my second home
R75 Saloon. Join Date: Feb 2009
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15th November 2021, 18:25 | #6 |
Moderator/Club Shop
MG ZT 1.8t+. No.3 of 4 in Sunspot Yellow & Ford Fiesta in Black. Join Date: Aug 2010
Location: Rattler Farm
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Thanks: 9,270
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No, stayed exactly where it should have been.
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233,509. Thats our 3rd meet done. Might go again next weekend. onen hag oll |
15th November 2021, 19:00 | #7 |
Gets stuck in
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