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-   -   Coolant Leask streaming from right side engine, near PS pump (https://www.clublexus.com/forums/sc-1st-gen-1992-2000/675462-coolant-leask-streaming-from-right-side-engine-near-ps-pump.html)

IS_Sunny Jan 27, 2013 10:55 AM

Coolant Leask streaming from right side engine, near PS pump
 
2 Attachment(s)
Any input fellas?

Coolant leak from the right (driver's) side of the engine, left of the power steering pump, behind the pulleys / belt.
Coolant is actively dripping from this area when the rad is filled and the car is off. When the car is on, under pressure, the coolant streams from this area. It seems to be dripping down to the Vane pump or Coolant compressor then onto the engine cover.

It's a very tight area so I'm unable to see what is actually leaking. But what are the options given the area of the leak?
It's not the upper radiator hose
  • Water By-Pass Hose? **Seems like it's right near where this connects.
  • Head gasket (no coolant in the oil or vice versa)?
  • Valve cover gasket?
  • Is the oil pump located in this area?
  • Is there a specific gasket or seal in this area that would be associated with the cooling system?

Forgive the odd picture, but it's the best I could find from my manual. The leak seems to be from within the red circles but behind the PS reservoir, hoses and pulleys. Either from or near the right side of the engine itself. :uh:

Attachment 501043
Another image example
Attachment 501044

IS_Sunny Feb 13, 2013 11:57 AM

*UPDATE
** SOLVED
:woohoo:

In case anyone runs into this issue... the leak was coming from a split in the rubber Water Bypass Hose.
This hose is on the right side of the engine just below where the main coolant hose from the radiator attaches to the top of the engine.

I had to take a lot of stuff off the car and poke around for a while... but it was definitely that hose.
No real reason for the cracked hose other then the car having 270k miles and I assume the hose was OEM.

So happy to have finally found the damn thing though! :woot:


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