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3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
I replaced a headgasket on my '90 325i about 6 months ago - had the head checked for warpage etc. Recently have started loosing coolant again. Car is not running hat at all. about 1-2 quarts in 100 miles. no obvious leaks at hoses etc. Question: what could this be? What is best way to diagnose problem? thanks
Did you replace the headgasket or did you have a shop do it? If a shop did it take it back to them and have your cooling system pressure tested. If you did it yourself get a pressure tester and test your car. If nothing leaks onto the ground after 5-10 min of having pressure in the system and you only loose 2-3 psi take out your spark plugs and see if the pressure drops. If the pressure drops you either have a cracked head or another bad headgasket.
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