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E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm}

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Old Fri, Dec-20-2019, 08:17:33 AM   #1
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Default Cold start issue

Look, I own 2013' E92 M3, and I've never had a problem starting even when parked outside overnight. Sure, you might get a glow plug light illiuminating indicating a delayed start. Never got that even in - weather. The car always fired up but ran rough. But I moved to the north and the last winter in ND I had to watch the car all night and warm it up every 3 hours. The battery is fine, and I am not even sure that I could do something. the only thing is to heat up garage every morning with some kind of heater (no central heating). Do you have any solutions? Let me know, if you know how to deal with that. And btw, if have any from this list, let me know. I guess if will find no answer will just purchase one of those
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Old Fri, Dec-20-2019, 01:01:03 PM   #2
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Default Re: Cold start issue

There are no glow plugs on an E9xM3. Your battery is probably weak. How old is it? What are itís ratings? Check your engine ground strap; it is under the car on the drivers side between the pan and frame rail. They rot over time. Give it a tug. Easy to test. Use a jumper cable just as an extra ground from the block to chassis under the hood. Then try starting. Does it crank faster? You could also try a thinner oil in winter. I have run 0W40 for about 5 years. 5W40 or 5W50 would also work. I have had no starting issues as cold as -20F with my 08M3.

Last edited by pbonsalb; Fri, Dec-20-2019 at 01:08:10 PM.
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Discussing Cold start issue in the E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) Forum - {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm} at BMW M3 (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)