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Dear Start My Car,
On Wednesday evening the president announced the easing of Level 3 regulations. South Africans will now be allowed to engage in further business practices in all areas of life. With this, it is important to keep in mind that the easing of restrictions is more about the need to open the economy than it is about the COVID positive cases being reduced. This means that we need to be extremely vigilant in our behaviour.
Sunday is also Father’s Day. We would like to wish all the fathers out there all the best for the day. Lockdown hasn’t been easy on anyone but for one day we want to give shout out to the dads who stepped up. Dads who became teachers and cleaners and ballet assistants and who still worked and worried about it all. Have a look at our market place to see if there is something that could be exactly what he wants.
Also take a look at the article I have included below. I am sure you will find it interesting.
Stay safe. Buy safe.
And be healthy.
All my best,
It's interesting to see the change in consumer purchases, with many people returning to thier work place, kids to school, certain sporting activities being allowed and many cars back on the roads due to and the softening of lockdown level 3.
What does this mean for the online automotive shopper.Dust off the car, give it a clean and jump that battery into life.
Grab some of this week's top sellers and don't be left standing in a queue, when you can have all your automotive and diy must haves delivered to your front door.
On most older vehicles, the water pump is driven by a V-belt or serpentine belt on the front of the engine that is also responsible for driving the alternator, power steering pump and air conditioner compressor. These types of belts are easy to inspect and replace if they are worn.
The backside of the serpentine drive belt, or the smooth side, usually drives the water pump. If the serpentine belt gets oil soaked or glazed, it will slip and not provide the proper circulation to keep the engine cool. And if there is oil on the serpentine belt, it’s coming from somewhere so you will need to find out where and fix it before putting on a new serpentine drive belt.
Look for tears or abrasions. If you see any it means the serpentine drive belt is rubbing a pulley flange or bolt as it winds it way around. This will happen more often as the drive belt gets older. Also look for pinholes and/or bumps. If you see any it means dirt and debris is getting in between the serpentine drive belt and the pulleys. Turn the belt around and see if there are chunks of the ribs missing.
Lastly, look for dry cracking on the inside of the belt. Hairline cracks are normal, but if they go into the backing, or flat side, of the serpentine drive belt you will need to replace it.
A good rule of thumb for serpentine drive belts is that if cracks are observed 3 mm apart, all around the belt, the belt may be reaching the end of its serviceable life and should be considered a candidate for changing.
If your car is relatively new, the water pump will probably be driven by the timing belt. This belt usually has a specific life expectancy at which time it must be replaced to ensure that it does not fail. Check your manufacturer’s handbook to see the correct replacement intervals. Since the timing belt is inside the engine and will require partial engine disassembly to inspect, the labour to replace this belt can be significant and it is a good idea to replace the water pump at the same time that the belt is replaced.
6.2 Radiator pressure cap test
A radiator pressure cap is designed to maintain pressure in the cooling system at a certain maximum pressure. If the cooling system exceeds that pressure, a valve in the cap opens to bleed the excessive pressure into the reserve tank. Once the engine has cooled off, a negative pressure begins to develop in the cooling system. When this happens, a second valve in the cap allows the coolant to be siphoned back into the radiator from the reserve tank. If the cap should fail, the engine can easily overheat.
A pressure test of the radiator cap is a quick way to tell if the cap is doing its job. It should be able to hold its rated pressure for two minutes. Since radiator caps are quite inexpensive, NARSA recommend replacing it every 3 years or 60,000 kilometers. Make absolutely sure that you replace it with one that is designed for your vehicle. One again, check Start My Car for your vehicle specific radiator cap.
6.3 Thermostat check for proper opening and closing
This step is only necessary if you are having problems with the cooling system. A thermostat is designed to open at a certain coolant temperature.
To test a thermostat while it is still in the engine, start the engine and let it come to normal operating temperature (do not let it overheat). If it takes an unusually long time for the engine to warm up or for the heater to begin delivering hot air, the thermostat may be stuck in the open position. If the engine does warm up, shut it off and look for the two radiator hoses. These are the two large hoses that go from the engine to the radiator.
Feel them carefully (they could be very hot). If one hose is hot and the other is cold, the thermostat may be stuck closed.If you are having problems and suspect the thermostat, remove it and place it in a pot of water. Bring the water to a boil and watch the thermostat. You should see it open when the water reaches a boil. Most thermostats open at about 90 degrees Celsius. An oven thermometer in the water should confirm that the thermostat is working properly.
Visit Start My Car to find the replacement thermostat for your vehicle.
6.4 Pressure test to identify any external leaks
Pressure testing the cooling system is a simple process to determine where a leak is located. To perform this test, you will need to invest in a pressure tester, available right here on Start My Car.This test is only performed after the cooling system has cooled sufficiently to allow you to safely remove the pressure cap. Once you are sure that the cooling system is full of coolant, a cooling system pressure tester is attached in place of the radiator cap.
The tester is than pumped to build up pressure in the system. There is a gauge on the tester indicating how much pressure is being pumped. You should pump it to the pressure indicated on the pressure cap or to manufacturer’s specs.
Once pressure is applied, you can begin to look for leaks. Also watch the gauge on the tester to see if it loses pressure. A loss of pressure is indicative of a leak somewhere.Most leaks should be visible from either underneath and above the engine.
The most notable exception is a leak in the heater core, since the core is enclosed and not visible without major disassembly. One sure sign the heater core is leaking is the unmistakable odour of antifreeze inside the car. You may also notice the windshield steaming up with an oily residue.To be continued in next week’s edition.
As I have mentioned often in this series, none of the components which make up the cooling system are particularly expensive to replace, relative to the cost of having to fix an engine which has overheated. It is therefore well worth taking the time to inspect your cooling system and nip any potential problems in the bud.
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