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Post by Specialbuoy on Nov 9, 2007 1:08:48 GMT 1
Lately, the mini has over heating if he's been ticking over for more than 5 minutes. Strange that.
on a different note:
he's still being a thirsty boy. I know for a fact the tank hasnt got a hole in it though. I also know that i'm no boy racer.
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taffy1967
turbo
Forum cagoule
'1959-2000 Original & Best'
Posts: 4,345
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Post by taffy1967 on Nov 9, 2007 17:33:07 GMT 1
Stuck thermostat?
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Post by Specialbuoy on Nov 9, 2007 21:38:17 GMT 1
I dont know what it is in gallons but I know that its roughly 10 miles to a litre.
I was brought up with the metric system.
......bloody french.
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Post by Dog on Nov 10, 2007 1:19:02 GMT 1
Easy way to solve overheating is flush the system out, and replace "service" parts. First check the condtion of the rad if its rotten replace it, if the rad cap is cracked (the seal) or rather old, replace it. Check your hoses, and do a general inspection of your cooling system, see if theres anything you might spot thats causing the problem. On a Carb or SPi A+ or A-Series engine.... You need a day to do it, but drop the cooling fluid (take off the bottom hose from the rad) Take off the thermostat housing (careful you don't snap the bolts) then simply drop a hose pipe in there for 10-20mins, let it flush though... once done, open the rad, flush the rad though, and if your wanting to go the whole hog, why not take off the hose thats on the heater control valve, and shove the hose on there too, flush the heater out. Make sure its nicely flushed, try and get hold of some rad flush, put that in your system before hand - helps remove the crap that might be in your engine. Once you've flushed the system, put the bottom hose back on, fit a new thermostat, personally, I like the 74* , but if your running unleaded, then a 88* thermostat is recommended. If you have a bypass, then ignore this bit... whereas for people with a A+ engine that don't have a bypass, drill 3 1/4" holes into the body of the thermostat, this will allow water to go past the 'stat and stop any "still" water making your temp gauge saying your overheating.... Once thats done, fit the 'stat with a fresh gasket, fit the housing (wire brush the bolts off, and apply a bit of cooper grease to the bolts), tighten down. Once done, start to refill the system back up, find out how many litres the cooling system is (I can't remember at the mo) say for example, 10litres... fill 5litres of anti-freeze first, then top up with water... this will give you a 50/50 mix of anti-freeze and water - ideal for the winter coming  Run the engine with the rad cap OFF... you'll see the water level drop, top up with water until its at the level mark inside the rad. Let it tick over, again with the rad cap off, try and let it get HOT, this will help remove any airlocks you may have in the system. Once thats all done, go for a spin, and see how it goes. If its still overheating then go to the next problem it could be, water pump... blocked rad... timing/tuning... |
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Post by Dog on Dec 1, 2007 0:05:14 GMT 1
Any Luck mate?
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Post by Specialbuoy on Dec 3, 2007 18:18:11 GMT 1
Yeah, The thermo was on its way out, plus there was a load of gunk in the radiator so I just left the garden hose in there for about an hour.
I think it was 17 years worth of gunk! nice one mate.
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Post by Specialbuoy on Dec 4, 2007 17:23:41 GMT 1
Well, tesco stuff I used.
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taffy1967
turbo
Forum cagoule
'1959-2000 Original & Best'
Posts: 4,345
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Post by taffy1967 on Dec 4, 2007 19:58:59 GMT 1
Good old fashioned Glycol based anti-freeze is generally better in Minis than that fancy new pink coloured OAT stuff.  |
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Post by Dog on Dec 7, 2007 19:31:00 GMT 1
anti-freeze is anti-freeze. As long as it does what it says on the tin, you'll be fine.
Just don't be a plank and run it neat.
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Run the engine with the rad cap OFF... you'll see the water level drop, top up with water until its at the level mark inside the rad.
