S2000 Under The Hood S2000 Technical and Mechanical discussions.

Slow Leak Under Transmission

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Old 02-04-2013, 09:43 AM
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Default Slow Leak Under Transmission

Hello fellow S2K owners,

I noticed a VERY VERY slow leak right under the transmission. I did not take a very long time to investigate where the leak is coming from. I checked the clutch fluid level and it looked about right. Any ideas on where to start or what it may most likely be? My car has been sitting there for 2 weeks and only the tiniest(slice of deli-meat)/thinnest blob of oil/fluid was under there. Enough to bother me and make me feel uneasy.

Thank you!

Regards,
Jeffrey Lee
Old 02-04-2013, 06:59 PM
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Where is the leak? Location wise? Bellhousing area? Tail shaft?
Old 02-04-2013, 09:27 PM
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Probably the main input shaft seal is leaking
Old 02-05-2013, 03:25 AM
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Originally Posted by RacerXI
Where is the leak? Location wise? Bellhousing area? Tail shaft?
Great question. Its on the tail shaft of transmission.

Sent from my SGH-T999 using Tapatalk 2
Old 02-05-2013, 04:47 AM
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pic for me?
Old 02-05-2013, 07:14 AM
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Originally Posted by Billman250
pic for me?
For sure, I'll take some pictures this weekend and bump this thread up.

BTW - I was going to shoot you a follow-up txt. Hope you've made plans for Cali again.
Old 04-07-2013, 07:37 PM
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Originally Posted by Billman250
pic for me?
Billman, finally come pictures today. Let me know what you think. Dont know if you can see it but there is an oil droplet on the tranny casing ready to drop. Thank you!
Attached Thumbnails Slow Leak Under Transmission-uploadfromtaptalk1365392179366.jpg   Slow Leak Under Transmission-uploadfromtaptalk1365392204499.jpg  
Old 04-07-2013, 07:53 PM
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there is a big difference in feel and smell between tranny fluid and brake/clutch fluid. Brake clutch fluid leaves a grippy/squeaky sensation when rubbed between your fingers and kind of smells pungent, tranny fluid is very slippery and has a strong petrochemical smell much like any gear oil. Motor oil is also distinguishable in terms of smell from the other two.

From the pics it looks like the drain bolt on the tranny is leaking, make sure it is torqued to spec, otherwise the washer is the culprit.
Old 04-07-2013, 08:02 PM
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Most likely its not brake fluid as both clutch and brake reservoir is full. I will look into the torque of the bolts. If anyone else has any other ideas. Thank you!

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Old 04-07-2013, 08:39 PM
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Feel up above the drain bolt with your hands to make sure it isn't leaking from higher up. If it is dry above the drain bolt then I would crack it loose a half turn, dry it up with a rag and then re-torque it to spec and see if the leak goes away.
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