Had the firing order as 1-6-5-4-3-2 and it won't start but when it was 1-5-3-6-2-4 it started but has problems

could well be 180 deg out and check dissy rotation that tyou have set plug leeds in right order and going the right way and starting at the right place no 1 tdc firing not exhaust

THERE IS ONLY ONE FIRING ORDER FOR THIS IT HAS BEEN THE SAME SINCE 1960??? 18436572 WITH NO1 IF YOU ARE STANDING STRAIGHT IN FRONT OF THE ENGINE YOUR HEI DIST SHOULD HAVE 2 PRONGS STRAIGHT ACCROSS FACING YOU IF IT IS NOT YOU MUST PULL THE DIST, ROTATE THE ENGINE AROUND TO COMPRESSION STROKE, VERIFY THIS BY THE POINTER ON THE TIMING COVER SET IT TO 0 WITH THE PISTON IN NO1 CYLINDER UP IF NO 1 PISTON IS NOT UP FULLY EXTENDED IN THE SPARK PLUG HOLE YOU ARE NOT AT NO 1
IF THE PISTON IS FULLY EXTENDED AND YOU HEARD A AIR SOUND THEN YOU ARE RIGHT, PLACE THE DIST BACK IN TURN THE ROTOR 1 TO 2 NOTCHES BACK TO THE RIGHT AND HAVE SOME ONE CRANK THE ENGINE IN SPURTS, IT SHOULD DROP IN, THEN REPEAT THE PROCESS TO VERIFY YOU ARE ACTUALLY ON NO1 THEN BEGIN THE WIRING

glad you found the problem

Firing order refers to the order in which each piston in an engine reaches the start of its power stroke and the spark plug fires. For example a typical firing order for a V8 engine might be 18436572, meaning first the #1 cylinder fires, then the #8, then the #4, and so on until the #2 cylinder fires and the process starts over with the #1 cylinder. Firing order is not necessarily the same for all engines.

Coil packs do not have firing orders, engines do. I suspect you were given the incorrect part.

Your factory motor is the 3800 V-6 for your model. You can get the firing order from your local parts store...(Auto Zone will print this for you for free) then you just need to identify the #1 cylinder spark plug and follow the firing order...if you have a friend with the GM 3800 V-6 (popular GM motor) you can also compare the firing order (plug wires) Hope this helps.

firing order for 5.7 v8 is 1-8-4-3-6-5-7-2 mostly all of the chevy v8s are the same firing order. the rotor button in distributer turns clockwise, the cylinder numbers are 1-3-5-7 on drivers side, 2-4-6-8 is on passengers side. To get started get your distrutor cap[new one] look on the top you will see a #1that's where you begin you must know if if rotates clockwise or counter clockwise start in that direction then follow the firing order and cylinder line up. good-day!! if cap is not marked, just pull out #1 plug, put a straw or similar in plug hole on top of piston. turn engine over by crank in front of vehicle with a wrench, when the piston comes to the very top just before it starts going down. this is tdc. and rotor button should be pointing to #1 wire on dist, cap. follow from there. good-day !!

Firing order is 1-3-7-2-6-5-4-8 Passenger side of engine starting at front and going back is 1-2-3-4 Driver's side starting at front going back is 5-6-7-8.




Hope this help (remember rated trhis help).

If I am right, the firing order is,1-3-4-2. With the dissy cap removed, have someone turn the engine over so you can see which way the rotor arm goes. Set the engine to TDC and the rotor arm should point to the No1 cylinder at the start of the firing order. If it rotor points away from the No 1 cylinder then slacken the dissy housing and move the diddy until the rotor ppoints to the No1 cylinder. Now pHT lead from the No1 spark plug to the No 1 possition on the dissy cap. The next lead goes on the next available possition on the dissy cap in the way of the rotation of the rotor then to the No3 spark plug carry on the same with 2 and 4 and that should solve your problem unless you have a different firing order.

the firing order is
1-6-5-4-3-2