17 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHSpeaking of coolant leaks!
Leading reported evidence
Check main pipes and reservoir all good
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
1
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Leading evidence: 'Check main pipes and reservoir all good' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check coolant recovery bottle' (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
Got the rear of the car up higher for a better look, blew off excess with compressed air and ran car up to temp.
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Suggestion
Have you checked the coolant recovery bottle for leaks?
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Suggestion · Original poster
Yes, have bèen reading all about that and checking photos out closely.
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Suggestion · Original poster
After blowing it all dry I kept engine running while checking underneath and first sign of coolant came from the plastic pipe shown in picture.
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17 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Forum Australia: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T163944Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My 997 C4 is suffering will a coolant leak. It seems to be coming from somewhere out of sight @ LHS of engine where pipework and coolant lines go from the underside to above engine. There is a black pipe not sure if rubber or plastic that looks the wettest behind metal pipes. Thinking of trying to pull it apart to pinpoint leak. Just not sure if best to go in from the sides or top or both. Hope it's not an engine out job.
Any tips would be appreciated, cheers
Thanks for the offer. Will see how I go. I couldn't get a proper look for the sake of safety. My folks are just down the road so will borrow some ramps etc and have a better look when I get a chance.
My wifes water broke 2 weeks ago then my car
😂
So busy times at the moment
Yes, have bèen reading all about that and checking photos out closely. I did notice that the black line on Ken has loom tube on it in the areas near the metal pipes, whereas mine doesn't
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Got the rear of the car up higher for a better look, blew off excess with compressed air and ran car up to temp.
So, I guess good news is pipes all look good and the winner is the oil separator! So is that still a engine out job or not? It is buried at the back tho?
🤔
I'm seeing coolant leak in the first pics. Oil air separator doesn't include coolant.
Have you checked the coolant recovery bottle for leaks? They do disintegrate with time.
Have checked main pipes and reservoir all good. After blowing it all dry I kept engine running while checking underneath and first sign of coolant came from the plastic pipe shown in picture. New to Porsches I had to look up what I was looking at from a spare parts pdf. Couldn't believe it said oil separator! What would it have to do with a coolant leak
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Started searching on youtube and found a vacuum test on coolant path of oil separator! Looks like coolant flow is in the top circular part of housing. The faulty one in the video is cracked at the same spot mine appears to be leaking.
Couldn't understand where some parts where previously wet when 1st sign of leak appeared. Got out from underneath car, gave the engine some revs and it sprayed out more.
Looks like it can be done with engine in but very time consuming.
I guess with a part that hard to get to I should get OEM part.
Can be done with the engine in place - might need to be lowered to get the left side intake manifold off. Can also be done by taking the transmission out. Only buy a genuine Porsche part not worth the headache of an aftermarket part.
Agree with you on getting genuine parts, contemplating whether to tackle it myself or not. A bit time poor at the moment with newborn and 2yr old.
I did find online someone put up some useful info from 101 Projects book.
Cheers
Had a closer inspection tonight while kids asleep and it looks like my intake is different to the one in Projects 101. Their info states 996 997. It shows pics of 996 with separator at front lhs and later 997 the separator rh rear which is easier to get at. Looks like 996 inlet manifold is plain with fuel rail and injectors separate where as mine 997.1 has it all together. Starting to look like an engine out job! Yikes
🤔
Yes, engine and g/box left in. I could reach up the back of engine from underneath. Hardest part was getting oil/air vent hoses off. The top one I just couldn't get so removed throttle body and main intake hoses that join plenums together then I could reach arou d from the top to get a better angle to pull it off.
It's definitely the sort of job that would have another mechanic say to you "Would you like me to put some fur around it?"
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