C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
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Old May 27, 2016 | 07:59 PM
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When the car is cold it does not start cleanly. The car kind of stutters before starting. When the car is warm, it starts perfectly. It does not strike me as a starter issue. Any ideas? Thank you.
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Old May 27, 2016 | 08:50 PM
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Maybe have your battery load tested? Just a thought. Others will chime in...
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Old May 27, 2016 | 08:55 PM
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Might be time for wires and plugs...
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Old May 28, 2016 | 04:02 PM
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Originally Posted by 73Corvette
Might be time for wires and plugs...
Can plugs misfire when they are cold?
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Old May 28, 2016 | 07:10 PM
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Originally Posted by STRMLNE
Can plugs misfire when they are cold?
Not sure about that one...I have had plugs that would not fire under compression .... was thinking that maybe when cold the compression was a bit higher and the some plugs were having trouble firing? May NOT even be possible in the LS1... just a rookie thinking out loud...that along with old wires that aren't delivering full voltage ... but, might start and run fine but, not at full potential...others more familiar with the system may enlighten us both...

Have you checked fuel pressure? Maybe it's bleeding off before start and then stays at proper pressure after it's been started for the day?

Last edited by 73Corvette; May 28, 2016 at 07:22 PM.
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Old May 28, 2016 | 07:22 PM
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Originally Posted by STRMLNE
When the car is cold it does not start cleanly. The car kind of stutters before starting. When the car is warm, it starts perfectly. It does not strike me as a starter issue. Any ideas? Thank you.
Use the dic and see if you have any codes. http://www.stengel.net/diccodes.htm
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Old May 28, 2016 | 07:34 PM
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Check and clean your battery connections, these cars are very sensitive to battery voltage and connections.
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Old May 29, 2016 | 02:08 PM
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Originally Posted by ronwc
Check and clean your battery connections, these cars are very sensitive to battery voltage and connections.
Can cold/hot start be affected by the battery terminals?
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Old May 29, 2016 | 02:39 PM
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Water in the fuel will do that. Don't cost much to try a bottle of fuel dryer and a top off.
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Old Jun 4, 2016 | 12:24 PM
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