1992 LT1 sometimes hard to start.
Thread Starter
Intermediate
Joined: Apr 2025
Posts: 25
Likes: 4
From: East Tennessee
1992 LT1 sometimes hard to start.
Randomly my LT1 is hard to start, it cranks, but no start for a minute or two after it's been driven about 30 minutes.
I verified the fuel pump starts, I'm monitoring current to the injectors now, as I said it's random.
With 90k on the car, I'm thinking of replacing the injectors, just due to age. I verified the fuel rail pressure at 42 psig but drops very slowly over an hour. Thinking maybe leaking into manifold and flooding is causing the hard start. Car starts cold and runs great.
Back to injectors. Rebuilt Bosch or brand new Delphi's? Any opinions would be appreciated.
I verified the fuel pump starts, I'm monitoring current to the injectors now, as I said it's random.
With 90k on the car, I'm thinking of replacing the injectors, just due to age. I verified the fuel rail pressure at 42 psig but drops very slowly over an hour. Thinking maybe leaking into manifold and flooding is causing the hard start. Car starts cold and runs great.
Back to injectors. Rebuilt Bosch or brand new Delphi's? Any opinions would be appreciated.
Last edited by jsbowman6; Apr 25, 2025 at 05:09 PM.
Melting Slicks
Joined: Oct 2003
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From: Chapel Hill NC
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Id check the battery, its cables, connections on the starter and the grounds, before buying injectors.
