8 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWater Leak.
Reported or suspected cause
tank
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
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Discussions that report identifying a cause
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Reported cause
I replaced both, but it was the tank that is very hard to detect leaks unless you do a pressure test as mentioned.
Leading evidence: 'tank' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'tank' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace both' (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
I replaced both, but it was the tank that is very hard to detect leaks unless you do a pressure test as mentioned.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion
's suggestion to have a pressure test done in order to locate/identify the cause/source of the leak.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion
A pressure test on both should reveal the culprit.
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8 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T013556Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Driving around town the other day in scorching heat, I got this when I got home. Since the video, the leak has slowed down a lot, but that could be because the heat is less?
Sometimes it's dripping around the cylinder head cover (as in the video) and another time its on to the exhaust tip.
I've had a look under the expansion tank and it looks ok, but I can only see some of it as the view further under is obscured. What do you guys think?
YouTube
The video appears to be private. Sounds like you have a defective cap or leaking tank. A pressure test on both should reveal the culprit. Most of the time, the tank has developed small cracks that are hard to see even with an inspection mirror. The best way is to do a pressure test.
It works now. Looks like either what I said above or you started with too much coolant that overflowed naturally. I would still suggest a pressure test to diagnose it positively. Was the coolant level above "max" before this happened?
Btw, if it's natural overflow, the coolant should drip from the black rubber overflow tube.
That is what mine looked like, when hot, after the tank cracked.
I could see that mine was the tank by looking through the space between the tank and "frame" member with the engine lid open. It never ran down the splash shield like yours is.
It started slow as just a whiff of anti-freeze smell and progressed to a steady dripping stream over about a week.
This is what my tank looked like.
did the pressure relieve lift open to let out over heated coolant? Just wondering. The reason is:- On the garage floor I saw a little pool of coolant under the drivers tail pipe area one day last week on a real hot day after a hard drive. Nothing since. Coolant level checked out OK.
Coolant tanks and older version caps are very common with coolant leaks. I replaced both, but it was the tank that is very hard to detect leaks unless you do a pressure test as mentioned. Is your tank yellowed? If so , it's most likely original. Heat and age are the culprits.
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