1986 should be carburatored and it is not required. That would only apply to a fuel injected engine.
0 TDC / Top dead center.
6 to 8 degrees BTDC---- Before Top Dead Center.
Timing chain
Chain.
i needi have an 87 4 +cylender 2.5 Chevy s10 pickup and need the timing diagram in order to get it running. can you help?
There is no timing adjustment, The computer controlls the timing.
Look at this: http://autorepair.about.com/library/firing_orders/bl-fo-5830.htm
does not have a timing belt it has a chain
There is no timing ajustment, Its controled by ECM- Computer.
You don't. The timing is adjusted thru the ECM.
what is initial timing on 1966 chevy 250
That requires an OBD2 engine scanner to set the timing. You can NO longer use a timing light.