BMW 740i Repair and Maintenance
A guide to problems, costs, maintenance and repair for your BMW 740i
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BMW 740i ProblemsMultiple Parts May be Recommended to Correct Coolant Loss
Leaks are known to develop in the cooling system. It is common to see more than one part recommended for repair/replacement due to overlapping labor and the use of many plastic parts in the system.
A fluid leak may develop from one or more power steering hose. When a leak is being repaired, it is not uncommon for multiple hoses to be replaced.
The rear lower ball joints may wear causing alignment and tire wear issues as a result of the excessive play in these joints. Our technicians tell us a 4wheel alignment should be performed after ball joint replacement.
BMW 740i QuestionsEngine misfiring on Bank 1 possibly due to timing problem. Could be timing guild (1 answer)
Replaced 20+ items on engine and it still runs rough as though it wants to stall out, it has left me stranded a couple times. The most likely problem is the timing chain rail is broken and maybe the tensioner and/or the gear and or vanos timing. Need to remove front of engine and replace problem...
The car has 223,000 miles on it and I have already replaced battery, water pump, and fuel pump.
BMW 740i RecallsThe Auxiliary Water Pump May Smolder and/or Catch Fire
On vehicles equipped with an 8 or 12 cylinder turbocharged engine, the circuit board for the electric water pump may overheat. This could lead to smoldering of the pump and/or an electrical fire in the engine compartment. Dealers will replace the auxiliary water pump to correct this concern.