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.
Well this was a fun day. On the way home car started over heating and I stop to cool and add coolant and water. Starts overheating again right away! So I add more -- but I get to thinking. what if it's the water pump? Then it hit me! Head gasket? OMFG there's water in the oil dipstick! Any ideas on the cost to fix??
Be careful who does the repair for you there are a few pitfall an inexperienced mechanic might not know i.e. the head bolts have to be replaced every time the head bolt holes have to be cleaned out before refitting the bolts to prevent them hydraulic locking and not tightening up fully. M20 heads are prone to porous heads and the head need to be pressure tested when itís off. Get the cam, rockers, and shafts checked as well. It can be expensive but normal worth it as the bottom ends off the M20 are good.
Well the car was done yesterday. The shop dude kept it for testing until today. It was very expensive! But the car runs like new now and feels like it has amazing power. He told me to break it in like new, which I'm doing
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