What is the correct way to set the timing on 93 GMC Sonoma pick-up with a

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JoeyC

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2.8 liter Engine.? I recently had pull the distributor out of my engine to replace the seal. I had bumped the # 1 piston to TDC before taking the distributor out but the timing is off little. It doesn't have the power it did and is drinking fuel.Someone told me that there was a wire you had to unplug before setting the timing and then plug back in after wards. How do I find this wire? Also how do I clear any codes?
 
there is a wire you have to unplug. It's supposed to be grey with a whilte stripe, mine was tan with a white stripe.
just follow the wires from the distributor. the wire has a plastic connector on it, it's easy to disconnect. finding it is pretty easy as well, it's a single wire and kinda stick out by itself.

so unplug it, make your timing adjustments then plug it back in. engine off when you disconnect and re-connect.

to clear codes, just disconnect the battery for 20 minutes.
 
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