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Change the spark plug. If that doesn't work change the HT lead from the plug to the distributer. If that doesn't help then check the distributer cap is not cracked and replace.
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The firing order for 5.7 L is 18436572, Number 1 is on the drivers side followed by 357 all on d/s even number on passenger side. Generally, the tower that is pointed at the number 1 cylinder is the number 1. The engine has to be at TDC on the ! cyl for this to be affective. To place the cyl on TDC, take the ! cyl spark plug out and using a gauge to see when pessure is achieved is best, but you can also use one of two alternatives.... Take a small screwdriver, and you will understand momentarily, place it in spark plug hole. manually crank engine clockwise until spark plug reaches highest point and that is TDC. The problem is, that you dont know if it is power or exhaust. So, first take a small towel and wrap around screwdriver and have a friend crank engine by hand using harmonic balancer bolt. You wil feel and hear the pressure build behind the plugged hole when number 1 is on pressure stroke. Then you can use previous tip with screwdriver to hone in on TDC.
Have you switched the spark plugs to see if it is a bad plug ? Switching the plug in cyl 2 with another cyl will tell you if the plug is bad if the problem moves to the other cyl. It takes alot more voltage to fire a plug in a compressed cyl than it does out in the open. If the plug is fuel soaked it will never fire.
Your crankshaft turns 2x times the camshaft. Put it this way as # 1 cylinder reaches TDC (top dead center) of the firing/compression stroke, and this will be after a (8 degs BTDC) spark to ignite the air/fuel mix, the # 3 cyl. will be at BDC of the intake stroke and as #1 begins its power down stroke, (during explosion of air/fuel mix), #3 begins its compression up stroke, the #4 cyl. will be coming down with #1 cyl. but #4 will be in the beginning of its intake down stroke, and #2 cyl. will be coming up with #3 but #2will be in its BDC of the exhaust stroke. Which has just fired previously to #1. 1342134213421342 etc.
Now the cam turns to open / close the valves;
In the outline above, #1 cyl. valves will both be closed. #3 cyl. will have the intake starting to close at this point. #4 cyl. will just be starting to open its intake valve, and #2 will be starting to open its exhaust valve. Is all this clear as mud? So as the crank makes one full rotation (in a 4cyl. engine) only the firing of one cylinder has happened.and at every rotation one cyl. will fire. So #1 at TDC then one full rotation, #1 back at TDC, but this TDC is half of its 4 cycles, (1)Intake, (2)compression, (3)power, (4)exhaust. this 1234 refers to the 4 cycles of the rotation not firing order.
Facing towards front of engine-number 1 is on passenger side front cyl of engine. Number 2 is front cyl on driver's side-number 3 middle cyl on passenger side-4 on middle cyl driver's side-5 on back cyl passenger side and 6 on back cyl driver's side. The distributer rotates COUNTER CLOCKWISE-number 1 cyl's sparkplug wire attaches to distributer cap connection closest to number 5 cyl.-to your right side of this plug wire on cap would go cyl number 2-then 3-then 4-then 5 and then 6. The firing order is:1,2,3,4,5,6
it sounds like you may have the wires on the wrong coil. It should be #1 on the #4 coil, and the #3 wire on the #2 coil. you probably have them backwards so 1 and 3 are firing on the exhaust stroke. the firing order is 1-3-4-2. they should be hooked like this.
hi from uk hope this will explain TDC valve positions ? when the crankshaft is at tdc this means that numbers 1 and 4 pistons are both at tdc but only one of the cylinders are on firing mode so if let us say in relation to 4cyl engine the fire order is 1 3 4 2 the c/shaft is at tdc ? but for which cyl ? 1 or 4 ? to check look if the camshaft mark is at its mark or check rotor arm ?if at 1 or 4 ? if it isat no1 cyl then both of the valves for that cyl are fully closed whilst no4 cyl valves are at the point of exhaust valve just closed and inlet just about to open this is correct for tdc number 1 cyl firing stroke ?ok so far ? now then if c/shaftmark is atTDC it may be number 4 cyl ready to fire? that is because the camshaft rotates at half speed to the crankshaft soyou need to rotate crank 360 deg to bring cyls 1 + 4 to tdc again then it will be cyl 1 at tdc on firing stroke along with rotor arm at No 1 plug lead and both valves for No 1 cyl will be closed (the cam lobes will be facing up whereas No 4 cyl valves will be pointing down ) hope this is clear for you to understand? if you look at any 4 cyl engine the sequense is the same for No 1 TDC but firing orders may change ie fords 1 2 4 3 is fire order they use as apposed to 1 3 4 2 ? OK? CURIOUSE why you asked? but best wishes and merry xmas from uk
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