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VW MKIII-A3/B4 TDIs This is a discussion about MKIII-A3/MkIII Jetta/Golf (<99.5) and B4 Passats (96,97) TDI's. Non TDI related postings will be moved or removed.

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Old April 5th, 2009, 17:18   #1
ocelot
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Default How to flush coolant?

I searched and found bits and pieces of information here and there, and one guide specific to a Jetta. None were enough. What is the right way to flush the coolant in a B4? I mean drain it 100% (or as close to 100% as possible)?

I saw this in the Bentley Manual, and I'm seriously hoping there's another, easier way to get it all out:



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Old April 5th, 2009, 20:10   #2
paramedick
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If you find a way, let me know. I find that those clips are a birch (substitute different consonant) to get off and then reclip in place.

We slip the bottom hose loose from the radiator and get out what we can. We aid this by slipping the return hose off the coolant bottle and pressurizing the system with air.

We then put the hoses back in place. Fill the system with distilled water. Run the engine until the thermostat open.

Repeat as above until the drainage is clear.
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Old April 6th, 2009, 13:48   #3
chittychittybangbang
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http://www.myturbodiesel.com/1000q_h...olantflush.htm

Here's how I did it. Easy way and 100% drain - no such thing. Unless the coolant is bad, 90% drain is fine.
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