starting ls3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

tytus03 · 09-06-2010, 08:23 AM

everytime I start my car for the first time of the day it like, dies, and I have to turn the key a second time and then it starts right up. This seemed to start shortly after I installed the aftermarket cat back about 400 miles ago. Any ideas what this could be? Appreciate any feedback.

SSLarry · 09-06-2010, 12:56 PM

I know its more for L99's, but maybe a fuse pull would work for you.

camaro5 · 09-06-2010, 03:07 PM

Could be losing fuel pressure while sitting. Dealer needs to check fuel rail pressure after vehicle sits for an hour.

flyby · 09-06-2010, 03:20 PM

I concur, most likely fuel pressure problem... most likely a bad rail you can check it at the dealer or smell for gas smell while car is on but not started.

webslinger408 · 09-06-2010, 03:28 PM

THIS HAPPENS TO ME ALSO I HAVE TO TURN THE KEY TWICE AT TIMES..BUT THEN AGAIN I ONLY DRIVE MY CAR EVERY 8-9 DAYS BECAUSE OF WORK TRAVEL. CAN THIS BE A PROBLEM THE CAR SITTING MOST TIMES IT HAPPENS WHEN I PUT GAS IN THE TANK RIGHT AFTER FILL UP..I USALLY LEAVE 1\4 IN THE TANK AS IT SITS IN GARARGE.

tytus02 · 09-07-2010, 07:18 PM

Quote:

Originally Posted by flyby

I concur, most likely fuel pressure problem... most likely a bad rail you can check it at the dealer or smell for gas smell while car is on but not started.

what do you mean by on but not started?

camaro5 · 09-07-2010, 07:57 PM

Quote:

Originally Posted by webslinger408

THIS HAPPENS TO ME ALSO I HAVE TO TURN THE KEY TWICE AT TIMES..BUT THEN AGAIN I ONLY DRIVE MY CAR EVERY 8-9 DAYS BECAUSE OF WORK TRAVEL. CAN THIS BE A PROBLEM THE CAR SITTING MOST TIMES IT HAPPENS WHEN I PUT GAS IN THE TANK RIGHT AFTER FILL UP..I USALLY LEAVE 1\4 IN THE TANK AS IT SITS IN GARARGE.

Yes. Sitting will do it. And the evap system pressure is lost when refueling which may hasten the pressure loss rate.

Quote:

Originally Posted by tytus02

what do you mean by on but not started?

Key ON, engine OFF. You need a Fuel Injection press gauge.

There probably is no external leak. There are check valves that fail.

tytus02 · 09-07-2010, 08:02 PM

Quote:

Originally Posted by camaro5

Yes. Sitting will do it. And the evap system pressure is lost when refueling which may hasten the pressure loss rate.

Key ON, engine OFF. You need a Fuel Injection press gauge.

There probably is no external leak. There are check valves that fail.

ok thanks. guess i better get it checked cause it does it a lot now. if it sits more than 15 minutes then i have to turn the key twice to start it.

09-06-2010, 08:23 AM	#1
tytus03 Account Suspended Drives: F150/2010 camaro 2ss blk ls3 Join Date: Jul 2010 Location: south texas Posts: 43	starting ls3 everytime I start my car for the first time of the day it like, dies, and I have to turn the key a second time and then it starts right up. This seemed to start shortly after I installed the aftermarket cat back about 400 miles ago. Any ideas what this could be? Appreciate any feedback.

09-06-2010, 12:56 PM	#2
SSLarry Drives: 2SS LS3 Join Date: May 2010 Location: Southeast Florida Posts: 1,309	I know its more for L99's, but maybe a fuse pull would work for you. __________________ 2010 CGM 2SS LS3, born: 4/10

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09-06-2010, 03:07 PM	#3
camaro5 Drives: X-15 Velocipede Join Date: Mar 2008 Location: SW Florida Posts: 4,637	Could be losing fuel pressure while sitting. Dealer needs to check fuel rail pressure after vehicle sits for an hour.

09-06-2010, 03:20 PM	#4
flyby Drives: 2010 Silver SS Join Date: Sep 2009 Location: Glen Gardner, NJ Posts: 1,336 View My Garage	I concur, most likely fuel pressure problem... most likely a bad rail you can check it at the dealer or smell for gas smell while car is on but not started.

09-06-2010, 03:28 PM	#5
webslinger408 Drives: 2010 camaro 2ss rs m6 Join Date: Jan 2010 Location: Bay area Posts: 110	THIS HAPPENS TO ME ALSO I HAVE TO TURN THE KEY TWICE AT TIMES..BUT THEN AGAIN I ONLY DRIVE MY CAR EVERY 8-9 DAYS BECAUSE OF WORK TRAVEL. CAN THIS BE A PROBLEM THE CAR SITTING MOST TIMES IT HAPPENS WHEN I PUT GAS IN THE TANK RIGHT AFTER FILL UP..I USALLY LEAVE 1\4 IN THE TANK AS IT SITS IN GARARGE.