I have a 2008 f150 with a 5.4. The truck had a miss so I replaced the spark plugs and coils and now the truck will not start. It will crank but won't hit. I have tried starting fluid to see if it would hit but still wouldn't. Anyone have any ideas to try?

 

what plugs and COP's were installed.. did you have brown boots ?

 

Yes it has brown boots. I installed ngk g power platinum plugs. The coils I got off of Amazon. I have tried it with but sets of coils and have the sane results with both.

 

so.. you pulled out SP-509's and installed NGK ? didn't know NGK made plugs for our motors. How much did you pay for COP's ? Have you checked for spark at any of the COP's ?

 

This one...NGK 5507 {#PZNAR6A11H} Laser Platinum Info
New engine style with brown coil boots only (NGK N/A for old engine design with black coil boots); Gap 0.044"; OE Equivalent Design

 

I paid $40 for the set. They had good reviews. I haven't checked for spark because I haven't had anyone to crank it for me while I check. The ngk 1698 I suppose to fit the 5.4.

 

This one...NGK 1698 {#ZNAR6AGP} G-Power Info
New engine style with brown coil boots only (NGK N/A for old engine design with black coil boots); Gap 0.044"


$40 for a set of coils ... a new motorcraft Coil is $60

 

https://www.amazon.com/gp/aw/d/B00SC34XDW/ref=mp_s_a_1_3?ie=UTF8&qid=1481903595&sr=8-3&pi=SY200_QL40&keywords=2008+f150+5.4+coils&dpPl= 1&dpID=41PSgjekUxL&ref=plSrch these are the coils that I used. I installed the coils before I changed the plugs it ran then but still had the miss after it heated up. Now that I have changed the plugs it won't even start.

 

Also if it helps any the was never any code showing for the miss fire.

 

Need to check for spark when you can.. not sure what's going on here.. check the ignition related fuses.. is the PATS light on the dash blinking fast..?