C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Dec 13, 2022 | 06:19 PM
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I have replaced opti spark, silinoid, ignition control module, I bought a new battery. Car still won't start. It used to, but won't anymore. Motor turns over but won't start. The non skid stop working, also the digital speedometer. Any suggestions would help.
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Old Dec 13, 2022 | 07:02 PM
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I moved you out of Introductions and here. I assume you own a 1996? Try here.. and Welcome
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Old Dec 13, 2022 | 07:09 PM
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Do you have fuel pressure?
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Old Dec 13, 2022 | 08:13 PM
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Originally Posted by Incorvettei
Do you have fuel pressure?
yes, and fuel pump turns on
I think my fuel pressure was at 38.
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Old Dec 13, 2022 | 08:18 PM
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welcome
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Old Dec 13, 2022 | 08:19 PM
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I know you replaced parts but when cranking do you have spark? Dan
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Old Dec 14, 2022 | 08:26 AM
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Originally Posted by Whaleman
I know you replaced parts but when cranking do you have spark? Dan
I have spark. The wire from distributor might not have spark. I have to double check
It used to crank, and turn on , now it just cranks. Last time I got it started with the neighbor spraying starter fluid in throttle body. After awhile I turned it off. And that was it. I bought a new battery to, but so far nothing.
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Old Dec 14, 2022 | 01:39 PM
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Originally Posted by Competitionyellow96
I have spark. The wire from distributor might not have spark. I have to double check
It used to crank, and turn on , now it just cranks. Last time I got it started with the neighbor spraying starter fluid in throttle body. After awhile I turned it off. And that was it. I bought a new battery to, but so far nothing.
I actually mean do you have spark at the spark plugs? Pull a wire and stick a spark plug in it and ground it out and crank it. The plug should have spark. Dan
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Old Dec 14, 2022 | 02:21 PM
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also if it will fire and run from starting fluid into the intake then u at least a fuel issue
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Old Dec 14, 2022 | 03:11 PM
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Originally Posted by Whaleman
I actually mean do you have spark at the spark plugs? Pull a wire and stick a spark plug in it and ground it out and crank it. The plug should have spark. Dan
^this. And...
Originally Posted by VikingTrad3r
also if it will fire and run from starting fluid into the intake then u at least a fuel issue
^that.
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Old Dec 14, 2022 | 03:30 PM
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Fuel System testing time, Check Fuel pressure, Check for Injector Pulse, also pull a Gas Sample check for Water/Contamination
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Old Dec 15, 2022 | 10:32 AM
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Originally Posted by VikingTrad3r
also if it will fire and run from starting fluid into the intake then u at least a fuel issue
thank you will look into this issue
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Old Dec 15, 2022 | 10:47 AM
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Originally Posted by Competitionyellow96
thank you will look into this issue
cheap ‘noid light” available online.
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Old Dec 15, 2022 | 01:49 PM
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Post number 4 you mentioned think (38) lbs at rail.
Weak 38lbs is below.
factory consistent locked "45" lbs.
Grab. Your reliable. Fuel pressure gauge.
Diagnosis. Precise. Key- on. Only.. lbs.
Next KO & start lbs.
Next idle. Lbs
Lastly. Quick crack of throttle,
Slow, gradual rev to 2k hold 2 secs.
Post. All. exact guage readings.

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Old Dec 15, 2022 | 08:59 PM
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38 should be enough to get it started. Might not set any drag track records but it should start.
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Old Dec 15, 2022 | 09:22 PM
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Originally Posted by Tom400CFI
38 should be enough to get it started. Might not set any drag track records but it should start.
thanks for all the tips. I ad stabilizer to fuel tank every 4 or5 months. Might just be the old premium. It's got the same fuel for about a year.
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Old Dec 16, 2022 | 07:23 AM
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One year old fuel will not stop it from starting. Dan
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Old Dec 16, 2022 | 07:25 AM
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Agree with Whaleman. 1 year old fuel won’t cause a no start issue
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Old Dec 16, 2022 | 08:17 AM
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It is worth the hours of hard work, keep going, when you have a good working vette you will see how glad you were to continue. There is just something about my vette at 35mph chugging along that I love, the folks behind me don't, but I do
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Old Dec 16, 2022 | 11:07 PM
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Originally Posted by Vets-Vet
It is worth the hours of hard work, keep going, when you have a good working vette you will see how glad you were to continue. There is just something about my vette at 35mph chugging along that I love, the folks behind me don't, but I do
Thanks for all the answers on. Here. It's a good place like Corvette family. I miss driving my vette the feeling it gives on take offs. I know the highways where I live and I travel with a radar detector. And the car gets looks, and thumbs up. When I figure it out you guys will be the first ones I tell the answer to. Hopefully it's a simple one.
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