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Leaky New Rad


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#1 vyruskiller

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Posted 09 August 2018 - 05:59 PM

So I have taken Percy for a drive today approx 60 miles and when I stopped off at the pub I thought I would check the water as it’s the first long drive since I have changed the water pump, silicone hoses and a new rad from mini spares, aluminium one.

I could not see any water in the rad so topped up and was about a pint or slightly less to get to the top so not a lot. Engine never over heated, stayed mid way on the gauge so it was only through checking I knew the water was lower.

When I got home same thing, had to top up with a pint or a bit more. Is this normal and I’m not aware of this or does it seem like I have a leak? Sorry may be a stupid question

#2 unburntfuelinthemorning

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Posted 09 August 2018 - 08:29 PM

The water's going somewhere - check every hose connection thoroughly.  Check for leaks at the water pump mating face too.  If nothing obvious when cold, warm then engine and check again.



#3 imack

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Posted 09 August 2018 - 09:01 PM

Correct rad cap fitted? Is it seating properly in the rad,

#4 nicklouse

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Posted 09 August 2018 - 09:02 PM

as above long or short cap fitted?



#5 phillrulz

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Posted 09 August 2018 - 09:27 PM

Maybe just an airlock in the system has cleared since you filled it up. 



#6 russo

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Posted 09 August 2018 - 09:38 PM

Yip, could be just an airlock. Keep an eye on things, especially if there is no external leaks.



#7 vyruskiller

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Posted 10 August 2018 - 05:14 AM

The cap is the one that came with the rad so I assume it's the correct one. It is a short one but with being new it's really tough to get on and off so I wonder if not seating correctly??

I've tried running the engine with the cap off when I first did the changes and that got rid of a couple of air locks, I will try that again.

#8 vyruskiller

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Posted 10 August 2018 - 09:17 PM

Oh I forgot to, mention that I put the heater on and instead of being warm it was more like air con it was that cool.

#9 cal844

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Posted 11 August 2018 - 09:02 AM

Check the bottom hose is tight, just changed a radiator yesterday due to the car using water at motorway speeds

#10 vyruskiller

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Posted 13 August 2018 - 05:14 AM

Checked all the hoses and seems that one of the clips on the by pass has come loose so hopefully it's that.

As for the heater blowing out only cool air I'm not sure as yet to why.

Not had chance for a test run yet so fingers crossed it is as simple as that

#11 Bat

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Posted 13 August 2018 - 05:40 AM

Hi,

If the heater is cold it's because there's a problem.

Some of the reasons why could be...

Heater valve not letting the water through.

Airlock in the heater.

Not enough water in the system, when you loose water the heater going cold is usually an early indicator.

Blockage in the heater, does the same as the heater valve would.

Thermostat in the wrong place if you have a sandwich plate.

Cheers  :proud:



#12 sonikk4

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Posted 13 August 2018 - 11:39 AM

If the heater had been working prior to the rad change then it points to a airlock. So turn the heater on ( select hot) fan on, cap off start the car and run up to temp. Check the heater hoes to see if they heat up and of course heat coming out of the blower




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