atnolan94

So I was hooking up my DRL LEDs and now when I start my truck it is billowing white smoke out of the tailpipe. Everything was 100% fine last time I drove it. Its a 04 5.4.

Two things that happened

1. The battery arced really bad when I was trying to remove it so maybe a fuse? But IDK where to start.

2. We tapped a wire that was up where all those plugs are on the passenger side of the engine bay. there are 3 plugs up there, and on the far left one there is a black wire with a blue strip on it that had ignition power. Could it be related to that?

Thanks for your help.

atnolan94

I should also say the white smoke smells like gas and it is billowing out of the tailpipe so its not coolant.

Also no codes as usual.

Summers22

iTrader: (2)

Didnt you say in another post you directly tapped into that ignition wire? Did you use an in-line fuse when you did that? If not then a fuse must have popped. Not sure what would cause white smoke out of the tailpipe though.

atnolan94

I tapped some ignition wire in the engine bay. The lights worked fine. It was just when I started the truck it was shaking bad and smoking.

I think it has to do with the arc the battery created. I guess I'll just start pulling fuses.

atnolan94

I checked all fuses and everything i fine. I guess maybe I have an injector stuck open??? The white smoke is obviously fuel....How do I diagnose this?

atnolan94

Anyone have a pinout diagram for the 2004 5.4 PCM?

powerranger262

Are you talking about the wires for the PCM? Tapping into those just seems like a terrible idea. Undo what you did, and see if it still does it.

atnolan94

Still does it. Yeah I realize now it was a bad idea but its still doing it. I ended up having my insurance tow it and a shop is going to look at it. Seems like I have an injector or two stuck open or something. I don't even know where to start. I did't even have any codes.

tareed94

Yeah, no idea what that could be. Good luck man

atnolan94

I thinking it has to do with the battery arcing when I unhooked it. It just about welded my socket to the nut.