New C63 question
Thread Starter
Member
Joined: Oct 2013
Posts: 186
Likes: 1
2014 C63amg, 2014 E350 4matic Sport, 2009 Escalade ESV, 2007 GMC Sierra
New C63 question
I bought my car 2-3 weeks ago. I have about 500 miles on it now. I've been pretty good about the break in so far. There are a couple questions I have. It hasn't moved in about 4 days. I've started it up a couple times just to hear the exhaust while its parked in the garage. Tonight I started it up and a good bit of white smoke poured out the mufflers. Normal?? Also on startup a pretty loud whistling comes from under the hood. Doesn't last all that long. Normal?
Want to make sure my girl is ok!! Lol
Want to make sure my girl is ok!! Lol
MBWorld Fanatic!
Joined: Oct 2009
Posts: 2,286
Likes: 62
From: eNyCe
Steel Grey Metallic C63!!
During a cold start, your engine runs richer to warm up the cats faster. Because you're just starting your car to hear the cold start, you have an excessive amount of unburnt fuel in the cats, hence the white smoke. It's normal if you keep starting your car just to hear the cold starts.
Thread Starter
Member
Joined: Oct 2013
Posts: 186
Likes: 1
2014 C63amg, 2014 E350 4matic Sport, 2009 Escalade ESV, 2007 GMC Sierra
During a cold start, your engine runs richer to warm up the cats faster. Because you're just starting your car to hear the cold start, you have an excessive amount of unburnt fuel in the cats, hence the white smoke. It's normal if you keep starting your car just to hear the cold starts.
Senior Member
Joined: Jun 2014
Posts: 408
Likes: 0
From: North of Pittsburgh PA
Ford Truck, 2014 C63 AMG 507
Starting and not allowing a engine to reach temperature is not a good practice. Once in a blue moon should not be a issue though.
I've been told and see it in practice (see below) that if the engine fails to reach operating temp moisture in the form of condensation begins to collect and will effect the oil.
Letting it reach operating temp will get the engine and oil hot enough to cook moisture out.
I work with VERY large stationary engines, 2,500 to 7,000 horsepower. For the reason mentioned above we never start them unless there are plans to go to full temp.
We sample the sample the oil for analysis and will see moisture from condensation if it begins to occur.
I've been told and see it in practice (see below) that if the engine fails to reach operating temp moisture in the form of condensation begins to collect and will effect the oil.
Letting it reach operating temp will get the engine and oil hot enough to cook moisture out.
I work with VERY large stationary engines, 2,500 to 7,000 horsepower. For the reason mentioned above we never start them unless there are plans to go to full temp.
We sample the sample the oil for analysis and will see moisture from condensation if it begins to occur.
Super Member
Joined: Jan 2003
Posts: 675
Likes: 3
From: Dallas, TX
2018 GLS 550
I would suggest not starting it just to hear it run then shutting down right away. You're not giving the oil ample time to circulate, as mentioned, excessive fuel pooling in the cats and probably allowing moisture to build up in places it shouldn't.
I'm sure things have come a long way, but I remember on the BMW VANOS motors a few years back, with short trips where the motors/oil would not warm up fully, then the car would be shut down, it caused moisture buildup in the crankcase to mix with oil, and they started to get this odd foamy/milky mixture that would buildup on the inside of the oil caps and freak people out.
Either leave it alone, or start it and drive it or let it run for a while. The quick start up and shut down I would imagine can't be good, but I could be wrong!
I'm sure things have come a long way, but I remember on the BMW VANOS motors a few years back, with short trips where the motors/oil would not warm up fully, then the car would be shut down, it caused moisture buildup in the crankcase to mix with oil, and they started to get this odd foamy/milky mixture that would buildup on the inside of the oil caps and freak people out.
Either leave it alone, or start it and drive it or let it run for a while. The quick start up and shut down I would imagine can't be good, but I could be wrong!
Thread Starter
Member
Joined: Oct 2013
Posts: 186
Likes: 1
2014 C63amg, 2014 E350 4matic Sport, 2009 Escalade ESV, 2007 GMC Sierra
Makes sense. I'll try to refrain. I expect this initial obsession to fade eventually. Next time I'll let it run for 10-15 minutes if I'm not actually driving anywhere
Banned
Joined: Jul 2013
Posts: 2,811
Likes: 7
C63 AMG
Trending Topics
Senior Member
Joined: Jun 2014
Posts: 408
Likes: 0
From: North of Pittsburgh PA
Ford Truck, 2014 C63 AMG 507
The obsession won't fade, at least mine hasen't. Just let it warm up. If its in a garage pull it out.... I mean the car....
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Member
Joined: Oct 2013
Posts: 186
Likes: 1
2014 C63amg, 2014 E350 4matic Sport, 2009 Escalade ESV, 2007 GMC Sierra
Super Member
Joined: Aug 2012
Posts: 650
Likes: 20
From: Alabama
09 Carrera S, , 03 F250 CC FX4
During a cold start, your engine runs richer to warm up the cats faster. Because you're just starting your car to hear the cold start, you have an excessive amount of unburnt fuel in the cats, hence the white smoke. It's normal if you keep starting your car just to hear the cold starts.
