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Thread: Coolant Loss
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Old 01-14-2020, 11:53 AM   #5
Join Date: Jul 2012
Location: Liverpool
Posts: 4,166
My Ride: 320i SE Coupe
Originally Posted by MrMCar View Post
Whoa, slow down there horsie.

Could it be a head gasket, sure. What if it's dirty injectors leaking down fuel into a couple of cylinders and you yank the cylinder head off...?

I'd suggest some testing is in order before you attack any repairs.

Get a higher level scanner where you can see not only fault codes but number/times/mileage any faults occur.
Live data is a HUGE plus.

Hook up a fuel pressure tester to a warm engine, start & shut off. Watch for large pressure drop after an hour or two. If it does, could very well be leaking (drip down) injectors giving rise to your issue.
Where does the coolant loss fit into your theory?
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