20 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHHelp Diagnosing Leak, Water Pump?
Leading reported evidence
Replace back in an area where it was hard
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
In my case it was a hose clamp on a house I had replaced back in an area where it was hard to see.
Leading evidence: 'Replace back in an area where it was hard' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'wp' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Recommend replacement of variable life solenoid valve/solenoid' (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
Now I've got a water pump that was replaced 5k miles ago.
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
Filled up coolant tank and ran until spotted leak.
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Discussions that suspect a cause
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Suspected cause
Well the wp us right above the leak so yes probably the wp.
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.
20 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261027T044418Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Overheated. Pulled over. Puddle under car. Had it towed home. Filled up coolant tank and ran until spotted leak. Thinking water pump. Figured some one out there would know if this is where water pump leaks show up.
Ummmm...is what I'm looking at one huge clear drip? Right next to the coolant drain plug? Because if that is the drip, it is not the water pump because that is way over to the left. Nothing else seems to be wet or weeping along the bottom of the block or oil pan or engine support bracket.
DBJoe996 was right. It wasn't the water pump. Replaced water pump and leak continued. It's coming from what I guess in the coolant manifold seal. Pelican Parts sells a Porsche brand cooling system seal lubricant. Think I'll try that. Drip is slow. Thinking puddle under car described in first post was from overheating when pulled over.
Anyone replace the manifold seal? Guessing big job.
In general I do not use stop leak products of any kind. They are quick fixes. If you're not keeping the car, or it's on it's last legs, then they are ok. IMO. Someone else can chime in, but I also saw that Porsche sealer for the coolant and wondered why they would make it. I think it's to keep some seals from weeping, not as a stop leak product.
I would suggest finding the root of the problem.
Best,
That is one strange place for a coolant leak. Given that the motor support bracket is beat to hell (left side is badly scrapped), are you sure no one backed into something, because to me it looks like the casting is broken or cracked. See blow up picture. Looks like it took a pretty good hit.
I had a leak in my cooling system that went on for about 1 year. Look and looked and could not find it. I went to AutoZone and got a cooling system pressure tester (you buy it and return it for a full refund under their tool lender program). Once I had the tester it took me about 15 minutes to find the leak. In my case it was a hose clamp on a house I had replaced back in an area where it was hard to see.
Hope it is not a cracked case!
The saga continues. I think the drips on the bottom of the engine are a red herring. Picture taken after sitting all night.
This is driver's side exhaust manifold. Wet entire length. There was a drip on one bolt. I touched it to make sure it was coolant.
As wrote above, overheated and towed home. Note: The warning light on the temp gauge came on, but temp gauge never went past middle. Day or two before noticed steam coming up through engine lid. Dismissed as water from just washing, In hindsight, this isn't indicative of leak from bottom of engine. Bought in November 2020. 48k miles. 3k since then. Have all receipts. New expansion tank in January of 2020. Daily driver. Once or twice a week (only on startup) throws misfire codes on on cylinders 1,2 and 3. Mechanics notes from March 2020 state if code continue recommend replacement of variable life solenoid valve/solenoid. Tailpipe smoke on startup for a short time not more that three times since owned. Oil on dipstick looks good. No milky froth.
Can't see coolant from a cracked cylinder making it out around exhaust gaskets.
Going out to get coolant pressure tester rental tool. Also going to jack from the other side to see if drips on bottom of the engine disappear/move.
At least the Packers are playing.
If you exhaust efforts with the pressure tester, get some coolant dye and a fluorescent light. Great for finding difficult leaks. Above the drivers side manifold is one part that has coolant going to and from it..the AOS. The AOS diaphragm housing on mine cracked and leaked coolant. Almost impossible to see unless you run a borescope back there.
This is all good information and it sounds like you're on the right track.
This is my experience with a slow leak on that side of the engine. Lots of good information from other members. You can see what I did with a pressure tester and UV dye from NAPA. This thread should give some ideas to go on.
https://rennlist.com/forums/996-foru...lant-leak.html
Best,
Leak is up high on driver's side of engine. You can see pool behind alternator. It then flows down under alternator. Drips on idle. Waterfall on high revs.
Is the change in flow indicative of the AOS?
What else up there can leak?
Heading out to get rental bore scope after the game.
