you turn the distributor and use a timing light
How to bypass security system on 1990 Chevy camaro
Timing for 1990 1500 with 4.3
Disconnect the plug going to the distributor that has two wores. Start the engine and set the timing to 0� (TDC). Stop the engine, reconnect the plug and the 'puter will handle the timing from there on.AnswerDisconnect the plug going to the distributor that has two wires. Start the engine and set the timing to 0� (TDC). Stop the engine, reconnect the plug and the 'puter will handle the timing from there on.
Timing on a 1987 thru 1990 Chevy Celebrity 2.8/3.1 engine is controlled by the ignition control module along with the engine control module. There is no provision or specification for manually adjusting the timing on these distributor-less models.
it's underneath the rotor in the distributor. you have to take the distributor out to change it.
The 1990 has a chain. The 1991 has a belt.
It does not have a timing belt. The cam is chaindriven.
ignition timing is electronic. follow the procedure in the repair manual for installing the distributor. Jeep does not have a base timing position.
It "tells" the computer the rational location of the distributor for spark timing.