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13th February 2019, 09:40 | #21 |
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Update - Residual Pressure Test
TC - I redid the test late last night (i.e. ran the engine for 30 mins). I've just taken the tank cap off and there was a very slight hiss (engine completely cold). |
14th February 2019, 15:14 | #22 | ||
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Quote:
A very faint sigh can be normal, but a sound like a pop bottle hiss would be concering. Can you repeat this test, but revving the engine to 3000 for 30 secconds every five minutes or so? Of course you musn't release the cap for 6-8 hours or till next day. Quote:
I'd suggest you do the textbook bleed/top up and then repeat this test. The coolant shouldn't become pressurised in this manner unless it's overheating/airlocked/pumped (exhaust). TC |
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14th February 2019, 16:38 | #23 | ||
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Quote:
Quote:
NB. If I turn the engine fan off (via Demist button) or switch the engine off I can hear some faint gurgling going on behind the centre console. |
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14th February 2019, 19:36 | #24 |
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15th February 2019, 14:01 | #25 |
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Ok TC - will do (bogged down with headlining removal at the moment - the usual nightmare with trim fixings etc. )
BTW, no hiss at all from the tank cap this morning. |
16th February 2019, 22:23 | #26 | |
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Quote:
I also did a test idling until the coolant reaches 87/90º and nothing happens. I'm suspecting the problem could be the cap or the O-rings. I will give a try and see what happens with the new one I agree with T-cut, in your case Simon, that gurgling you mention definitely means air locked in the cooling system. Mine doesn't have that noise. If I was you I would try bleeding the system and see if it can solve the problem. Anyway I will report the situation in mine as soon as the cap arrives.
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4th July 2019, 14:58 | #27 |
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5th July 2019, 01:16 | #28 |
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Simon I ended up replacing just the O-rings once I've changed the thermostat and after that, I discovered there was an airlock in the cooling system, mainly because I'm dum and I didn't bleed by the book.
So the spilling coolant problem in my case is almost certainly related to airlock. Enviado do meu Redmi Note 6 Pro através do Tapatalk
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