S2000 Under The Hood S2000 Technical and Mechanical discussions.

Coolant leak above alternator?

Old 05-02-2017, 03:57 PM
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Default Coolant leak above alternator?

Green liquid assuming coolant is leaving right above my alternator. Any ideas? Hose looks like its ok? Noticed it because my battery died and had to jump start the car but dont think I left anything on?
Old 05-02-2017, 05:21 PM
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The upper coolant bleed valve is in that area. Go to stickies at top of forum, DIY, Maint.FAQ. Look for Billman coolant bleed procedure. Should be a good pic of the valve I think may be leaking on you. You may have some air as you have a leak. Follow the Billman procedure and you should be good to go.

utah
Old 05-02-2017, 05:22 PM
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The hose is likely a little brittle and stiff from age, swap it out and switch to the Honda Blue coolant as you will need to drain the system.

Just maintenance to keep it living strong!
Old 05-03-2017, 03:51 AM
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You don't need to drain it to remove and replace that hose. I mean you can, but it's a bit overkill. Just replace the hose, burp and top off fluid afterwards. I don't remember the ID of the hose off the top of my head but I have one in the trunk, so when I get a break I'll measure it.

You can probably get it to stop leaking by moving the clamp forward a bit, but that's not a long term solution.
Old 04-07-2018, 05:08 AM
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Bump. So I deleted my hard line in order to vent the valve cover to atmosphere today. While pulling the stock coolant hoses to replace with a new piece some of the coolant came out and fell onto the alternator. Just a little bit. Should that affect it in any way?

Now my car doesn't start after pushing the start button. I hear the fuel pump and I hear what I think is the starter making a once off click (sort of) but no cranking. Checked fuses inside and in the engine bay and none relating to starting were blown.
Old 04-07-2018, 01:24 PM
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It appears the hose has some crust on it, I wouldn't be surprised if it's leaking. More than likely it's due to the hose being brittle, that and it's shaped to the clamp holding it on. I have just finished replacing ALL the coolant hoses on and under the intake manifold, I did this because that hose has split on me and caused coolant to go everywhere. I would HIGHLY recommend looking at the remaining hoses to see if they are brittle/leaking at all, takes a days work and maybe $80. IF you would like part numbers, PM me. I have them all handy.
Old 04-07-2018, 02:55 PM
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Originally Posted by Lochness Monsta
It appears the hose has some crust on it, I wouldn't be surprised if it's leaking. More than likely it's due to the hose being brittle, that and it's shaped to the clamp holding it on. I have just finished replacing ALL the coolant hoses on and under the intake manifold, I did this because that hose has split on me and caused coolant to go everywhere. I would HIGHLY recommend looking at the remaining hoses to see if they are brittle/leaking at all, takes a days work and maybe $80. IF you would like part numbers, PM me. I have them all handy.
You just replied to an old thread as if it were recent, because the previous post bumped it with a similar but different concern (and that person should've started a new thread).
Old 04-08-2018, 06:06 PM
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Originally Posted by snitm
You just replied to an old thread as if it were recent, because the previous post bumped it with a similar but different concern (and that person should've started a new thread).
Wasn't paying attention to dates, just scrolling through the recent posts here to read up on.
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