Thread: Very hard Cold Start, 1980 SLC 5.0
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Old 10-31-2005, 09:48 PM
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You're dealing with Bosch CIS mechanical fuel injection (also known as K-Jetronic). Nothing like electronic fuel injection we're all so familiar with.

Given the cold temperatures you're dealing with, my initial suspects would be the warm-up regulator and cold start injector. Perhaps the cold start valve. Hopefully some folks with more expertise than I will chime in...

Haynes has a fuel injection manual that explains the system. Make sure you get the one that covers early systems, up to 1985.
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