1985 Cold Start
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2nd Gear
Joined: Mar 2025
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1985 Cold Start
My corvette starts and runs fine over 50 degrees fahrenheit, but cranks for 3 seconds twice before starting when 40 degrees and above. Will not start under 40 degrees. Thinking that the 9th injector is the issue. What is the easiest diagnostic method and solution? Prior owner did an emissions delete but that's all the known information. Please ask me anything. First time Corvette owner, absolutely love her and looking to drive her around a couple of months while there is no snow on the ground in Northern Wisconsin.
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Joined: Aug 2020
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From: Liliha Bakery stuffing my face with coco puffs!
Although it's referenced to a '86 I'm sure they all work the same, pay attention to post #6<click
Those temps you mentioned are purdy frigid meaning you're getting cold start enrichment (9th injector) at either temperatures. I would check fuel pressure to make sure it's within spec and maybe go as far as doing the routine maintenance stuff if you don't know the current condition of those parts. i.e. cap, rotor, spark plugs, spark plug wires...
Those temps you mentioned are purdy frigid meaning you're getting cold start enrichment (9th injector) at either temperatures. I would check fuel pressure to make sure it's within spec and maybe go as far as doing the routine maintenance stuff if you don't know the current condition of those parts. i.e. cap, rotor, spark plugs, spark plug wires...
