Question about Buick Cars & Trucks
Leak seems to be in the area of the fill reservoir
Posted by Anonymous on
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Posted on Jan 02, 2017
First things first don't use Dexcool.
It would happen only once in a while likely because the overflow bottle doesn't always fill to the point of where the leak is located. It would be very easy to unbolt the bottle and fill it with water to find the leak and patch it up.
Posted on Jun 19, 2009
The other thing you need to know is this: it may be time to replace your radiator or suffer the expense of a new head gasket if you dont. The tubes within radiators become clogged with age. Corrosion particles lodge themselves in the tubes over time and cause them to clog. The result is that tube no longer has coolant running through it to be cooled so the 'work' of cooling is left up to the remaining tubes. The more tubes that become clogged with age, the less efficient the radiator is in lowering the coolant temperature. WORSE STILL, this clogged tube phenom can also result in blowing head gaskets. Here's how. If you poured water into a section of pipe it would run out the other end as quickly as you poured it in. If you partially cover the end as you pour water in the top, the water does not escape as quickly as you are pouring it in, so it eventually overflows out the top as you continue pouring water in. This is what happens in your radiator, except, the water is being 'pushed' through the radiator by your water pump and because it cant exit the radiator as quickly as its being forced into it, the water pressure builds up between the pump and radiator. In between this pressure zone is your head gasket, usually the weakest pressure zone, meaning, its what gives first. The reason the water doesnt just exit through the presssure cap of the radiator is because the pressure within the radiator itself is not as great as the pressure zone created by the pump within the head. The pressure exerted on the water is greater because it is in a more narrow passage than the pressure being exerted on a larger area within the radiator. Sounds confusing I'm sure, but trust me on this. Few mechanics learn this until they replace a head gasket or two only to have them fail again within a short period of time because the radiator was never replaced!
Posted on Aug 25, 2009
SOURCE: anti freeze leak
hi are you overheating and are you having to fill it up because it is leaking or were you just toping up and is it coming out of the overflow on the expansion bottle to find a leak that at first appears not to be leaking the best way to find it is to put a pressure tester on it see if the pressure goes down as it will if there is a leak but then you will see it and don,t take the water cooling systems caps off when hot yates210456
Posted on Oct 15, 2008
there should be 2 brackets at the rear of bulb housing, 1 may have a small bolt.....lift these up and the headlamp housing should come out. you will see how it works when you get it apart.
Posted on Oct 09, 2009
It is highly probable then that it is in fact the heater hose leaking. Here is how.
If your radiator level remains full, then it won't draw coolant from the reservoir. The reservoir is also an over-flow bottle in the event the engine over heats and the coolant boils, the steam can be released into the reservoir...which is obviously not happening so we don't have to consider an engine gasket leak.
The only other places that you can lose coolant from then in your situation that would be rather obscure is the heater hoses. They are in the flow path of coolant after flow through of the engine. Thus why your engine is not over heating. If they (the hoses) are leaking then the coolant return amount to the radiator will get low enough to create a siphoning of coolant from the reservoir that you have to continue to keep filling.
Posted on Nov 09, 2010
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