I have a 96 Camry with a four banger. The water pump was replaced in the past week by my brother and there is still a leak. He said it is on one of the metal lines I think in the back. Something about an o ring not working right and he seems to be having issues figuring it out. We could really use some of your expertise. Thanks in advance for any help. It is much needed.

 

The water pump mounts on a removable housing behind it. This housing is what bolts to the engine and connects with various coolant plumbing.

The housing has a large o-ring to seal where it mates to the engine block.

As you have noted there are also a couple steel tubes visible, these tubes connect to the housing. The upper tube has an small o-ring installed in front of a flared out portion of the tube.

The lower tube has a flanged bracket. A gasket goes between this flange on the tube and housing.

Both tubes are physically connected together by the lower flanged bracket.

When the housing is installed the upper tube with o-ring slides into a port on the housing. The lower tube flange with gasket faces will face up to the housing body.

The flange has holes that engage a couple of studs on the engine. Since the upper and lower tubes are physically connected by the flange when the nuts on these studs are tightened the upper tube and 0-ring are also forced against the housing along with the lower tube being forced against its gasket.

Try tightening the nuts but don't over tighten or the studs will break. 78 inch lbs.

If no luck the water pump and housing need to be removed. Once off replace both large and small o-rings and the flange gasket then reassemble the housing onto the engine. Tighten the two nuts on the flange then install the water pump.