1992 Chevy 350, you need to unplug the brown wire under the black cover on the pass side firewall. Then make sure its timed on 0 measured at the front of the damper. If it does not run right take off the dist cap and with a socket and long breaker bar have someone watch the dist rotor as you turn the engine reverse rotation, what you are looking for is a slack in the timing chain. If their is significant slop, then retime engine 2 degrees advanced til it is running good again. When you are done reconnect the brown wire and put the plastic cover back on. Done.
Why would you want to unhook the Electronic Spark Timing?
Yes. Unhook and plug the hose going to the distributor, set the timing to factory specs, then replace the hose.
There is no timing adjustment, The computer controlls the timing.
timing advanced, 180 out, Chevy requires delayed vacuum for advance, did you change the vacuum supply location? firing order 18436572 clockwise on distributer, turning distributer counterclock wise advances timing,
yes turning the distributer will throw off timing in any car or truch with one
Its the brown wire from the distributor, goes to the fuses/relays on your firewall. unhook that and you will have your base timing.
what is initial timing on 1966 chevy 250
the are identical go for it
That requires an OBD2 engine scanner to set the timing. You can NO longer use a timing light.
it does not mean that. it means that the timing is off so it has to be timed by a timing gun pointed at the distributer and adjusted
Just set timing for 4 deg BTDC on my 69 runs great.
timing on my 283 4-barrel is 8 degrees btc.