Timing the Engine
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From: Sonoma CO. CA.
Car: 1984 Camaro Z28
Engine: L69 305 H.O.
Transmission: T-5
Axle/Gears: 3.73
Timing the Engine
My smog test showed that I'm 6 degrees ATDC. My shop manual says to unplug the harness that goes from the distributor to the ECM then set the timing. The problem is the engine won't run worth a damn when I unplug it. It's almost impossible to start. Can I unplug the harness after I start the engine? Could I get Zapped (shocked) if I did that? Do I have to disconnect the ECM to get the correct timing?
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Joined: Jan 2000
Posts: 20,981
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Yes you can unplug it after it's running, and yes you need to disconnect it to get the correct timing.
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