Samco hose won't stop leaking?
Discussion
The previous owner of my car has installed a samco hose from the waterpump to the radiator. I've noticed a slight drop in antifreeze since I've owned the car, however after taking the car round oulton park, I heard a huge squealing noise from up front. Turns out, antifreeze has been getting thrown out of this pipe from the waterpump side. The waterpump itself is almost new, and there are no visible leaks from the pump seal itself, but the pipe from the pump is wet all on the bottom. I've tried 2 jubilee clips to stop it, hasn't solved anything. It seems to leak more when giving the car a good pasting. Clips are tight, pipe is secure, pipe isn't perished or ripped as far as I can see, but one thing I've noticed when undoing the clips is that as soon as I start to loosen the clips, the pipe starts pissing antifreeze out. From personal experience, this is strange because when undoing hose clips to pipes etc, the pipe doesn't start throwing fluid out until I start wriggling the pipe to get it off. This pipe starts to leak as soon as I go near the jubilee clips, pipe slightly too big perhaps? Any good sealants I can use? The samco hose from the thermostat to radiator is fine, just this waterpump hose keeps pissing out....
marmitemania said:
I would think that there may be grit or dirt in between the the hose and the flange it pushes over or a pin hole in the hose. Is the car a ZS or 45 by any chance? Just because it has had a new water pump does not mean that is not leaking, the are a weak spot on the K series engine and unfortunately often the cause of the dreaded HGF, I fitted a new pump on the wifes 45 when I replaced the timing belt less than a thousand miles later the pump was leaking.
No it's a MK3 Zetec engined fiesta, I'll check to see if any corrosion round the pump, but as I said there's no visible sign of antifreeze round the pump seal so I can't see it being the pump itself996TT02 said:
Perhaps the jubilees were overtightened and the pipe split underneath.
Perhaps the water pump neck is not perfectly smooth, some casting marks / flashing perhaps resulting in a rib where the pipe slips on.
No real solution without taking the hose off and inspecting everything.
Drain from the rad drain plug if available and reuse the coolant if collected in a clean bucket.
I've had the pipe off and it's npt split, but the pump does have a little lip on it where the pipe goes over. This may be the problem, eurocarparts don't seem to stock the hose I'm after though so I'm not sure what route to takePerhaps the water pump neck is not perfectly smooth, some casting marks / flashing perhaps resulting in a rib where the pipe slips on.
No real solution without taking the hose off and inspecting everything.
Drain from the rad drain plug if available and reuse the coolant if collected in a clean bucket.
That's good to hear, seems to be leaking when putting the car through it's paces, not on idle so I'd imagine that the hose is slightly too big. The actaul OEM hose is very difficult to find, given that MK3 Zetec Fiesta's weren't exactly common in the first place, hopefully a standard hose will sort it :/
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