Help: New Plug Wires Won't Start

[gsbarry]

I just replaced all the spark plug wires with a Bosch set from RockAuto.

Now the ex wont start. I triple checked all the boots and coil leads. They all seem to be firmly connected.

Any ideas on troubleshooting?

Should I resort to putting the old ones on one at a time until it starts?

I am stumped.

 

[Xplorer82]

sure you got the firing order correct?

and Bosch sucks FYI. for fords anyway. should have went autolite or motorcraft!. (edit, sorry thought you put in bosch plugs as well)

 

[Gus Gorilla]

It's firing order. I did this to my ST. The order is Left bank, then Right bank.
123
456
I was used to the
135
246
order of business. And that is wrong, as my 4.0 SOHC promptly told me.

 

[2000StreetRod]

Paired plugs

A common mistake is overlooking the numbering on the coil pack. Ford used a waste spark ignition system with paired plugs. The coil pack is numbered 1-2-3 on one side and 5-6-4 on the other side since the pairs are: 5&1, 6&2, 4&3. The firing order is 1-4-2-5-3-6. I suspect that you have 5 and 6 swapped.

 

[gsbarry]

Fixed

I paid particular attention to use streetrod's firing order and not make the 5 6 error mentioned above.

The problem just turned out to be a flooded engine. I let it sit overnight and she cranked right up this morning!

The Bosch coil leads are a little crooked, so I had a little trouble getting them to seat correctly, hence the flooded engine.

Thanks for the help guys, appreciate the input.