Thread: Coolant leak
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Old 03-09-2021, 02:19 PM
StephenVA StephenVA is offline
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Tools needed to pressurize a COLD cooling system for diagnostics

Note: STANT 12030 threaded system testing adapter is required to
test most BMW and Land Rover cooling systems with a
threaded filler neck.

Images below are for a 3.0 application

As Andrew posted it not rocket science. Pressurize, look for drop in pressure on gauge, find source!

Oh, see #4 sensor in lower rad hose? The seals go bad all the time. You can either buy the sensor with the seal or just the AFTERMARKET seal. See Rockauto.com for the $.88 seal
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