2000 Ford F-150 Lightning Q&A

2000 Ford F-150 Lightning Question: miss fire

I just replaced all coils ,pluges, inner cooler, lower intake, injecter @ # 6 it still miss fires good compession. -
Answer 1
Random or specific cylinder? Did you replace the boots as well. Check the spark plug again for cracks. Could be a bad injector... -
Answer 2
Is it only one cylinder? The code returned to the same cyl. that was misfire before? We need to know a bit more about the history on this. Hal has the right questions about the connector boots and the cracked insulation. Zee -
Answer 3
it could also be a lifter or cam follower which will cause the first compression stroke to show compression but after that you will not have compression causing the miss i have seen this several times personally -