The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

OldSuperSport · 04-18-2005, 10:10 PM

I just finished a cylinder head rebuild, and now I have a timing setting problem. I put the paper clip in AB on the diagnositc plug in the cab, then set no.1 for 0 degrees. Its running weak at this point, stumbles on throttle up. I stop the engine, pull the AB clip, restart, and the timing stays right where it is. Shouldnt it go advance? It runs rough, weak, stumbles, feels like it flooding out.

If I set the timing just off the timing scale (CCW off the left side)(12 advance?) it runs with power, feels great, etc, but still the computer does not change the settings.

Any ideas. I dont think there are any vacuum leaks.

04-18-2005, 10:10 PM	#1
OldSuperSport Registered User Join Date: Apr 2005 Location: Akron, Ohio Posts: 13	How to set timing, 95 5.7L Silverado I just finished a cylinder head rebuild, and now I have a timing setting problem. I put the paper clip in AB on the diagnositc plug in the cab, then set no.1 for 0 degrees. Its running weak at this point, stumbles on throttle up. I stop the engine, pull the AB clip, restart, and the timing stays right where it is. Shouldnt it go advance? It runs rough, weak, stumbles, feels like it flooding out. If I set the timing just off the timing scale (CCW off the left side)(12 advance?) it runs with power, feels great, etc, but still the computer does not change the settings. Any ideas. I dont think there are any vacuum leaks.