Re: How to set timing on a tbi motor?
on the passenger side, under the dash, is a taped cluster of wires. the aldl connector is there. Disconnect it. Then, start the truck, and adjust the timing. The check engine light will come on, just disconnect the negative cable, and it will clear out. Reconnect the ALDL connector before restarting the engine. I wouldn't go over 2+ degrees, it will ping unless you put 92 octane in it. If you put an aftermarket chip in it, it will ping worse.