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2000 gmc Sonoma v/6 Firing order, firing order for the 4.3L engine is 1-6-5-4-3-2.
Cylinder order drivers side 1-3-5 and passenger side 2-4-6,
Check the attached links,instruction and guides, Good luck
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Best bet, go to your local parts store and pick up a haynes manual, but i can offer my advice if you dont want to do that, first make sure your ignition parts are all good, coil cap rotor, then make sure your firing order is correct, (again haynes manual would be helpful,) then if that fails loosen the distribitor enough you can turn it but not loose enough it would turn on its own, bring your number one cyilinder up to TDC (TOP DEAD CENTER) <(the top of the compression stroke, you do this by getting a buddy to help you, remove the coil wire take the number one spark plug out and USE ONLY YOUR FINGER, cover the hole and have your buddy bump the key untill the compression blows your finger out of the hole, then verify the rotor under the distributor cap is pointed at the number one plug wire on the cap. Again the haynes manual would be a great investment as it explains all this in detail and even has pictures too. good luck and let me know if that helped
For the 1988 GMC K2500: I do not know if you have the 4.3L V6 or the 5.0L, 5.7L or 7.4L V8's however I have included all below: For the 4.6L V6: Firing Order: 1-6-5-4-3-2 Cylinders: ......(back)........ '...6...........5...' '...4...........3...' '...2...........1...'
.......(front) Distributor:
......(back) (+) - screw
..........4
....................3 5
.....................2
....6
.............1
.....................(+) - screw
For ALL V*'s (5.0L, 5.7L and 7.4L) Firing Order: 1-8-4-3-6-5-7-2 Cylinders: .......(back)........ '..8..............7..' '..6..............5..' '..4..............3..' '..2..............1..' ........(front) Distributor Connections: .....(back) .....6.....5 3...............7 4...............2 .....8.....1 .....(front) Rotation: Clockwise
To avoid confusion, ALWAYS replace spark plug wires one at a time.
The most important thing to remember about the removal and
installation of a distributor, cap or spark plug cable is that all
wires MUST be labelled before they are disconnected. Keep in mind that
these figures depict a firing order where the distributor cap terminals
are relative to EACH OTHER only and they do not necessarily depict the
tower positions in relation to the rest of the engine. This is true
because any distributor which has been removed and reinstalled may have
been installed with the No. 1 spark plug tower at any position (360
degrees) in relation to the rest of the motor, as long as the rotor
aligned to the No. 1 tower when the No. 1 cylinder was at TDC of the
compression stroke (valves closed, ready for the plug to fire). As long
as the remaining wires were connected in the correct firing order
sequence (depending on direction of distributor rotation) the engine
will run. DO NOT EVER remove more than one wire from the distributor
cap at a time unless you tag ALL wires and towers to assure proper
installation.
Hello cman0906: My name is Roger and I will answer your question. The fire order is 1 5 6 4 3 2. See picture. Please rate the answer you recieved. This way we know your answer was correct. Should you need further halp please just ask. Thank You for using Fix Ya. Roger
where do you start on the cap
starter not turning over
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