Different then your C 6. but normal.
Slow to start
Thread Starter
Burning Brakes
Joined: Nov 2007
Posts: 1,008
Likes: 16
From: Tampa Florida
Slow to start
My wife had a C6 convertible. It would start almost instantaneously when the key was turned.
Her new C7 convertible seems to turn over a couple of times before it starts.
It never fails to start but she has noted that it is just different. Has anyone else noticed this or is it just ours ?
Her new C7 convertible seems to turn over a couple of times before it starts.
It never fails to start but she has noted that it is just different. Has anyone else noticed this or is it just ours ?
Instructor
Joined: Oct 2012
Posts: 145
Likes: 2
From: Manahawkin NJ
Mine does exactly the same thing, and only after sitting. It cranks for quite a while than catches. Seems to run fine, and only has 90 miles so I was waiting to see if it improved over the break in before bringing it to the dealer....
Team Owner
Joined: Aug 2007
Posts: 136,140
Likes: 2,432
From: I live my life by 2 rules. 1) Never share everything you know. 2)
St. Jude Donor '11-'12-'13, '16-'17-'18
Melting Slicks
Joined: May 2007
Posts: 3,269
Likes: 25
From: Simi Valley Ca
You had a key to start your wife's C6?? Damn, my C6's lacked an ignition key. Must have been an option I didn't pay for! 
Just kidding! 
As others have said, it's normal and it's the result of direct injection and evidently common among other direct injection vehicles.
Just kidding! As others have said, it's normal and it's the result of direct injection and evidently common among other direct injection vehicles.
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Pro
Joined: Dec 2007
Posts: 647
Likes: 0
From: Minnetrista MN
This is completely normal with direct injection. The colder it is the longer it takes to build up fuel pressure to start. Up here in MN i first noticed it in my 2014 silverado in the fall and it would take like 5 secs to turn over, it also had me worried at first. 
Race Director
Joined: Jun 2013
Posts: 12,414
Likes: 1,750
From: DFW TX
I would actually not mind if all my cars cranked for a few seconds before starting – give the oil system a chance to prime! The vast majority of engine wear apparently happens right on start-up before oil pressure is up.
Hmmmm – Maybe I’ll add a delay relay into the ignition system
Hmmmm – Maybe I’ll add a delay relay into the ignition system
Last edited by acroy; Mar 25, 2014 at 11:22 AM.
Melting Slicks
Joined: Sep 1999
Posts: 2,301
Likes: 83
From: DFW, TX
I had mine in for service today and mentioned this problem to my service writer. He gave me a copy of #PIP5179: Extended Crank Cold with (DI). (Doc ID:3709701) which basically states that crank times will increase as the temperature falls. Thus, it seems to be normal with DI.
Instructor
Joined: Jan 2014
Posts: 105
Likes: 0
Mine too.
Funny thing is, I have 2013 Mercedes Benz with DI also, and it starts is less than a second- almost instantly.
However, it also sounds like a sewing machine on idle, even when warm. And, it is no comparison at all to this marvelous LT1 engine we all have.
Funny thing is, I have 2013 Mercedes Benz with DI also, and it starts is less than a second- almost instantly.
However, it also sounds like a sewing machine on idle, even when warm. And, it is no comparison at all to this marvelous LT1 engine we all have.