Open the roof and look down into the catch pan into each corner, there should be a hole in each corner. When cleaning them, be careful not to knock the drain hoses off... (you can't see them, they are under the headliner)
There may be only holes in the front or the rear, but most have drains in each corner.
SOURCE: 2002 Toyota Sienna Sunroof
There are 4 drains on the sunroof (2 in each front corner, 2 in each rear corner).
If you want to check to see if they are clear, you can do this.
Get a squeeze bulb (about the size of a turkey baster) and squirt water down each drain, look for water draining out at the bottom of the car. For the rear drains, park the car on a slight uphill, and gently squeeze water down the drain trough on each side, here again, look for water draining out of the car.
If those ar clear, next step is to check the seal of the glass. The drains are only designed to take in a small amount of water, if there is too big of a gap between the panel and the body, it will over run the drain troughs (kind of like when the gutters on a house get stuff in them).
Finding water leaks is kind of a pain, but not if you take it a step at a time.
One thing to remember, water does not run uphill.
So to further water test it. Find a place where you can park it uphill or downhill, grab a flashlight, a friend and a hose.
Start at a low spot, and work your way around the sunroof (one person inside with the light, one outside with the hose). Just let the water run slowly, you don't want to use a nozzle or a spray.
Once you can see when the water starts leaking on the inside, you can narrow down the cause.
SOURCE: 2002 Eclipse
its by your intake manifold on the bottom of the engine block. there is a heat shield covering it which will need to be removed to get to it
SOURCE: 2000 eclipse--is there a drain plug for the
each corner should have a drain. open the sun roof and get a flashlight and a coathanger type wire and see if you can clear the front drains.
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