How to bleed cooling system Vanagon?
The key to the factory method is to: Fill the expansion tank, open the bleeder on the radiator, put the passenger heat setting on HOT. Start the van and hold the revs above 2,000 rpms while pouring coolant into the expansion tank until coolant spurts from the bleeder.
How do you flush Vanagon coolant?
To flush, you just need to fill the system with water, bleed it, and run it, then drain to out. I did this 2-3 times before refilling with coolant.
When did the Vanagon become water-cooled?
1983-
1983-1985: The Vanagon was introduced in year model 1983 with a water-cooled “Wasserboxer” or “Waterboxer” (for all of us English-speaking folk) engine in North America.
Do Volkswagen vans have radiators?
Like all previous Volkswagen vans, the Vanagon/Transporter’s engine is located in the rear of the vehicle. A water-cooled engine relies on a radiator to dissipate heat, and the best location for a radiator is out front in the stream of fresh, cool air.
Which antifreeze is phosphate free?
ZEREX G40 is a premium grade, long-life coolant that employs nitrite, amine and phosphate-free, Si-organic acid technology (Si-OAT) to protect the cooling system from rust and corrosion.
Where does the coolant go in a Vanagon?
Once the coolant reaches about 190˚F (87˚C), the thermostat opens and begins routing coolant via the long coolant pipe way up to the radiator. Here, fresh air draws away the excess heat, and the now-relatively-cool coolant goes back to the water pump and engine via the return pipe, completing its circuit.
Why are there bubbles in the Vanagon cooling system?
Though in theory a closed loop, the Vanagon’s cooling system can sometimes develop bubbles or pockets of air, caused by incomplete bleeding following a coolant replacement, a leaking hose or clamp, or by a failing cylinder head gasket allowing exhaust gases into the cooling system.
How does the refill tank on a Vanagon work?
The Refill Tank’s volume will rise and fall with coolant temperature, between the MAX and MIN marks. NOTE: These tanks are often and variously referred to by owners and even by the vaunted Bentley Workshop Manual as the reservoir, pressure, overflow, or burp tanks, sometimes interchangeably, which certainly doesn’t help matters.
Why is the coolant light blinking on my Vanagon?
If the coolant light is blinking you should pull over immediately! This light tells you that your level is low or that your temperature has gone to high. Driving a Vanagon with low coolant even a short distance can cause severe head cracks and gasket problems.