Coolant leak - unsure where it is from

Technical Area Engine, Transmission, Exhaust etc
1
  1. My model of MX-5 is: __ mx5 mk1
  2. I’m based near: __ Birmingham
  3. I’m looking for technical help or recommendations on: where the coolant leak is, it’s seems to be just behind the belts. I have went under the car and this is the clearest picture I could take. I have circled it black where it is dripping from.

Not sure what it could exactly be? And what needs to be taken off to find the culprit

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2

Your waterpump is probably on its last legs. As they wear out, a small pinhole is exposed and will leak to warn that it needs replacing.

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Either take it to a garage to pressure test the car or buy a cheapy pump to test yourself.

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That’s amazing! Where did you find this info?

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Pretty much all water pumps have a weep hole. It’s for when the shaft seal lets coolent past it. to stop the coolent reaching the bearing, it leaks out a small hole. If coolent gets in the bearing, it may seize. https://www.youtube.com/watch?v=GtTghk9ESDY

1 Like
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Thanks for that, I’ve spent most of my time on air-cooled stuff.

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Could it potentially be the water inlet pipe? the 90 degree elbow joint which gets rusted and corroded I believe my water pump and cam belt were changed roughly 15k miles ago.