plug wire diagram and firing order

[blg1994]

Trying to figure out the order of how the plugs and wires go. I've heard a couple different things from different people and I'm completely lost. I thought I hooked everything up exactly how it came out one at a time but now it won't start and obviously I crossed something up or something. Just replaced coil pack plugs and wires

 

[Dirtman]

The year and engine type would help.

2.5? 3.0? Or 4.0? Assuming 98?

 

[blg1994]

The year and engine type would help.

2.5? 3.0? Or 4.0? Assuming 98?

Sorry about that I thought i put in description but noticed I didn't. It's 98 and 3.0

 

[Dirtman]

142536 is the firing order. Let me see if I can find a diagram.

 

[RonD]

Shouldn't be any conflicting info

This is standard for pretty much all V6 engines that use coil packs: https://ww2-secure.justanswer.com/u...235741_2008-02-03_124842_firing_order_3_0.jpg

If coil is mount in line(not sideways) then
3 4
2 6
1 5
front

Like this: https://easyautodiagnostics.com/images/articles-0-99/90/97/image_E_5.jpg

 

[blg1994]

Shouldn't be any conflicting info

This is standard for pretty much all V6 engines that use coil packs: https://ww2-secure.justanswer.com/u...235741_2008-02-03_124842_firing_order_3_0.jpg

If coil is mount in line(not sideways) then
3 4
2 6
1 5
front

Like this: https://easyautodiagnostics.com/images/articles-0-99/90/97/image_E_5.jpg

I appreciate the help!! I figured they should be the same for the most part at least. My grandpa said that didn't sound right but he's a Chevy man. Unfortunately haha

 

[RonD]

V6 coil pack just has 3 coils inside not 6, 1 coil fires 2 spark plugs at the same time, called a Waste spark system now-a-days, but it was the first spark system ever used, and it's still used
Timing is based on crank not Cam like a distributor

All multi cylinder engines need to be balanced, on a V6 2 cylinders are matched pairs, they are both at TDC at the same time
For a V6 that's 3 sets of matched pairs, each 120deg apart in their rotation, so each pair have a TDC in each 360deg rotation of the crank
The 3 Matched pairs are
1 5
2 6
3 4
Look familiar?

Yes, the coil pack "pairs", each pair gets a spark at its TDC but only one cylinder would be on compression stroke to use the spark, the other is on exhaust stroke so spark is "wasted", hence the name
But not really a "waste" like we think that word means, should be called "simple" spark system, since that's what it is, simply the easiest and most reliable spark system ever used

Pretty much all V6's use those matched pairs to balance the engine, Ford, Chevy, Dodge, ect.............
Doesn't mean firing order is the same, that's decided by the cam setup