I changed my upper radiator hose, thermostat, housing and clamp. I still seem to have a leak from the hose. Should I add a second clamp?

Asked by Dec 01, 2015 at 05:55 PM about the 1994 Mercury Sable 4 Dr GS Wagon

Question type: Maintenance & Repair

3.8l enginge

7 Answers

23,845

One hose clamp should be more than enough. Maybe check for leaks in or around the housing, a pinhole leak under pressure might be spraying onto the hose.

1 out of 1 people think this is helpful.
18,220

If you have the clamp that you need to use a pair of pliers to remove like a spring remove clamp and replace with clamp that uses a screwdriver to install.

It is a screw clamp. It is definitely leaking around the hose. If I loosen the clamp the spot leaks more. I have taken the hose off. It is a new hose, I cannot find any holes or cracks. I had someone else try to tighten it also, just in case it was me. I have tried clamping in different locations but it's still leaking.

18,220

Remove hose and check the surface of the thermostat housing and inside of hose making sure there is nothing on it to keep it from sealing correctly.

18,220

If all else fails replace clamp with a new clamp.

23,845

Make sure the housing itself isn't deformed, if it's out-of-round you'll never get a good seal. Take a wire brush to it if needed to make sure it's a good clean surface. Also double check you got the right size hose.

1 out of 1 people think this is helpful.

I got the right hose. It is a brand new clamp and hose. The housing is also new but I'll check it tomorrow to see if it needs sanding somewhere. Everything is new, this is why it's frustrating me.

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