Quote:
Originally Posted by MikeDiehl
Well, this exercise has made it painfully clear that I need to flush the entire cooling system.
Flushing the main system seems easy enough. But I've got a question about flushing the heater core.
I've seen 2 methods for backflushing the heater core.
1. Attach a garden hose, via a fitting and poly tubing, to the output of the core and another tube to the input of the core. This essentially reverses the flow and drains out the input.
2. They make a T adapter that plugs into a garden hose, but requires that the output hose from the heater core be cut, and the T inserted into it. However, something about that host screams "don't cut me."
I really want this system flushed out as well as possible, so any comments or suggestions would be welcome.
Mike D
'96 4-Runner 249K mi.
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You're over thinking it. Get a coolant funnel kit (something like this:
link). Drain your radiator, fill it with distilled water using the coolant funnel kit, turn on your 4Runner (with the coolant funnel kit still attached), turn you're heater on full, let your engine get up to operating temp (doesn't hurt to give it a few revs once at operating temp), turn off your 4runner, repeat. Then fill with 50/50 using the coolant funnel kit, keep the engine running until no more bubbles come up out of the funnel, remove the funnel using the no-spill insert, put the cap back on the radiator. Simple and easy.
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1999 4Runner Limited - 5VZ, 4wd, Factory E-Locker, Multi-Mode, 5-speed swap, Armored, Icons, 295s (
thread)
2001 Tacoma Xtracab - 3RZ, 4wd, 5-speed (Daily Driver)
