Hey,
I have had starting and driveability issues with my 740 for some time. I have been replacing stuff and fiddling around for months. I still had cold-start issues, and poor mileage.
I read something on here about Bosch platinum plugs being an issue with these cars. So I went out and looked at what I'd installed last year. Sure enough, Bosch platinum.
So I went and dropped a whopping 8 bucks on a set of NGK BPR6ES Copper-cores.
The car is running GREAT. I don't know if the cold start issue is fixed, but it really seems different. Car starts and settles down to the proper idle in like 1 second.
Fingers crossed.
Thaddeus
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