15 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCoolant loss
Leading reported evidence
Check 24 hours
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
level was checked 24 hours after the car was parked up.
Leading evidence: 'Check 24 hours' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check 24 hours' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed · Original poster
Checked the oil and water yesterday and it had used around a cup full.
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Performed · outcome unconfirmed · Original poster
Checked the oil and water yesterday and it had used around a cup full.
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Suggestion
I only ever check my coolant level when the car has been stood over night unused.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
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Generation: 20261027T011819Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Drove down to the nec for the classic car show on Saturday from Barnsley roughly 90 miles each way. Checked the oil and water yesterday and it had used around a cup full. There are no signs of any leaks anywhere. I'm thinking the worst and wondering if it could be the head gasket that's leaking. There doesn't appear to be any water in the oil yet. The engine was rebuilt around 5 years ago at strasse in Leeds we're they put 6 new liners in. Does anyone have any more ideas what it could be? Thanks in advance :dont know:
radiators are around 4 years old. I replaced both of them. I thought header tank but it's holding pressure a for a good hour at red car has been turned of.
Never compare water level until you know the system is fully down to ambient temperature - which will easily take over 5 hours. The level fluctuates a fair amount during the heating/cooling cycle due to heat expansion.
I only ever check my coolant level when the car has been stood over night unused.
:thumb:
Have you checked your footwell carpets? Although your heater usually gives off a wiff if that's leaking.
Best way to find a leak is leave the car runbing on the drive for 20 minutes after already up to temp. Pressire is at its highest then and everything is fully expanded so any micro-crack in your systems will them leak coolant.
I think Alex's assessment is more likely than head gasket etc.
I had a hose clip that needed nipping up. I was loosing half a cup of coolant every time I drove the car. There was no signs of leaking at all. I.e. nothing under the car. The water must have just been evaporating off.
A clue might be temperature fluctuations on the guage rather than steady 82 Deg. Which may point towards the system not fully pressurising due to a slight leak.
Demort might be able to confirm, but I presume a garage may be able to pressure the system to leak detect???
no temperature fluctuations at all. I had it running on the drive for about half an hour and no leaks were visible. There was still pressure in the tank an hour later when I took the cap off. The cap is very tight to get off.
How often do you do a 180 mile round trip? Could it be an air pocket that finally got out?
See if it does it again, then worry about it. If it does I'd start by rigorously checking all connections, especially those you disturbed four years ago, and looking for congealed coolant around the joins.
If there is white deposits around the cap on the bottle and engine bay trim, this is an indication that the lid is leaking. It only costs about £20 so it is a cheap place to start.
There's no evidence of any residue around the cap.ive not noticed it leaking before now though. I don't know how much coolant would have to leak past the cap to leave a mark?
