2000fordf1504x4

Its tech school its a 2 year program and I complete it in may

akdoggie

You could have an injector problem with the #6 hole, but when this usually happens, it's in the valves. Good luck.

wilson84

You got a bad coil I.just went Thur this with my 99 f150 4.6

loganhorse

I'll look at it when it warms up. Temperatures in the teens with no garage.

loganhorse

Update: pulled all plugs and injectors. All plugs looked fine. Injectors checked out with voltage meter. Coil also checked out with the voltage meter.

loganhorse

Anyone have a suggestion on what to look at next? I really don't wanna waste money guessing.

wilson84

Ur coil can.ohm.out good but still b bad go out in the dark pull individual wires c if the spark jumps if it does go to ur wires and do the same on the plug end

Jbrew

Exactly. All that tell you is that the coil isn't complete dead. It won't show you a shorted coil which causes low grade misfires @ certain engine loads. An android phone will tho

But he has packs and Autolite plugs. Autolite plugs often can't handle the heat range of the V8 modulars. I'd NEVER run AL's specially 103's and 104's, they are junk! AND can/have caused multiple misfires, -even new.

joe8512

My engine light flashed when it was my Coil... I replaced all 8 and sparks as well just because my truck has 140k and they were all original.

Jbrew

Sooo..Did you use Autolite plugs or not?

And your CEL flashes because of a misfire, not a coil pack in particular. There could be a number of reasons.