Hard Start
Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 830
Likes: 29
From: crestview fl
Hard Start
Guys
I writing to see if your Zo6 owners are having a hard start issues with your vettes. When I push my stater button the engine turns over like an old Chrysler for about 8-10 seconds then fires. This happens every time I let my car sit for awhile and sometimes when out doing quick stops around town. Is this a normal occurrence with LT4 engine? My vehicle is a 2016 CTS-V that has the LT4. I brought it to stellarship and was told that's normal! I really don't think so with direct injection! I think I might be having a fuel pressure issue which until the correct pressure is detected the motor will not fire. Thats my shot in the dark, by no means am I correct just thinking out loud. Just wonder if any LT4 owners were having this issue and what action was taken to correct it.
v/r
Mike P.
I writing to see if your Zo6 owners are having a hard start issues with your vettes. When I push my stater button the engine turns over like an old Chrysler for about 8-10 seconds then fires. This happens every time I let my car sit for awhile and sometimes when out doing quick stops around town. Is this a normal occurrence with LT4 engine? My vehicle is a 2016 CTS-V that has the LT4. I brought it to stellarship and was told that's normal! I really don't think so with direct injection! I think I might be having a fuel pressure issue which until the correct pressure is detected the motor will not fire. Thats my shot in the dark, by no means am I correct just thinking out loud. Just wonder if any LT4 owners were having this issue and what action was taken to correct it.
v/r
Mike P.
Safety Car
Joined: Dec 2012
Posts: 3,849
Likes: 1,860
From: St. Louis Metro East IL
Normal DI start. Both my 2014 C7 and GMC Acadia act this way to build fuel pressure. My port injected older Impala and Trailblazer start "normally."
https://www.corvetteactioncenter.com...engines-8.html
https://www.corvetteactioncenter.com...engines-8.html
Le Mans Master
Joined: Oct 2005
Posts: 7,088
Likes: 1,829
From: Metro Detroit Michigan
Probably normal. If fuel pressure has had time to bleed down, the engine needs to turn over long enough to allow the camshaft-driven high pressure pump to build fuel pressure up to normal.
Le Mans Master
Joined: Mar 2010
Posts: 5,909
Likes: 651
From: St. Louis
I don’t think 8 or 9 seconds is normal. Are you sure it’s that long cranking to start —- have you actually timed it with the stop watch in your cell phone.
My lt4 seems to crank a second maybe 2. It actually is more instaneous when cold. It’s not like the ls7 which started instaneously all the time. My lt4 is more like my c4 lt5 which cranked a bit before starting.
My lt4 seems to crank a second maybe 2. It actually is more instaneous when cold. It’s not like the ls7 which started instaneously all the time. My lt4 is more like my c4 lt5 which cranked a bit before starting.
Last edited by Mr. Gizmo; Oct 12, 2018 at 06:45 PM.
Melting Slicks
Joined: Feb 2006
Posts: 3,271
Likes: 182
From: Manassas VA
Guys
I writing to see if your Zo6 owners are having a hard start issues with your vettes. When I push my stater button the engine turns over like an old Chrysler for about 8-10 seconds then fires. This happens every time I let my car sit for awhile and sometimes when out doing quick stops around town. Is this a normal occurrence with LT4 engine? My vehicle is a 2016 CTS-V that has the LT4. I brought it to stellarship and was told that's normal! I really don't think so with direct injection! I think I might be having a fuel pressure issue which until the correct pressure is detected the motor will not fire. Thats my shot in the dark, by no means am I correct just thinking out loud. Just wonder if any LT4 owners were having this issue and what action was taken to correct it.
v/r
Mike P.
I writing to see if your Zo6 owners are having a hard start issues with your vettes. When I push my stater button the engine turns over like an old Chrysler for about 8-10 seconds then fires. This happens every time I let my car sit for awhile and sometimes when out doing quick stops around town. Is this a normal occurrence with LT4 engine? My vehicle is a 2016 CTS-V that has the LT4. I brought it to stellarship and was told that's normal! I really don't think so with direct injection! I think I might be having a fuel pressure issue which until the correct pressure is detected the motor will not fire. Thats my shot in the dark, by no means am I correct just thinking out loud. Just wonder if any LT4 owners were having this issue and what action was taken to correct it.
v/r
Mike P.
Drifting
Joined: Jul 2002
Posts: 1,973
Likes: 152
From: Somewhere in Dallas TX
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Racer
Joined: Apr 2013
Posts: 305
Likes: 67
From: york south carolina
I see your point i've had a 2014 and now 2017 and mine is not like that i would think of it as more like fuel pressure to build up but of course you would need a pressure guage to verify that. But it does start pretty soon which is good. Lets see what others might have to say!
Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 830
Likes: 29
From: crestview fl
Guys
Thanks for your feed back, I guess I have to get used to my LT4 engine startup time delay. Nothing like my previous LSA engines in my last 3 CTS-V's. Thanks for your replies!
v/r
Mike
Thanks for your feed back, I guess I have to get used to my LT4 engine startup time delay. Nothing like my previous LSA engines in my last 3 CTS-V's. Thanks for your replies!
v/r
Mike
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
