All the lines, MAF, IC piping are tight and in place....let me go check the plugs....they were replaced by me not too long ago, I want to say around 8,000 miles ago.

 

Plugs look fine...probably could be changed but nothing to worry about in my eyes....I am gonna go grab some new plugs from the store now....keep the suggestions coming

 

Are the battery cables on tight? Maybe the negative is coming loose under a load.

 

Plugs solved the issue....it just concerns me that all of a sudden it **** the bed. Cylinder 1's plug was way more fouled then the others.

 

wiring is screwed up. probably grounding out the constant power feed to the amp.

 

If only ONE spark plug caused the problem, there is a bigger underlying problem. Sounds like oil or coolant or something is getting into that cylinder (or detonation) and fouling the plug. What does the plug look like?

 

That is exactly what I was thinking....the plug has corrosion around the hexagon (part you ratchet) and was fouled more than the other plugs...

 

Wow, I'm glad we could help. Maybe you should get this check out by a shop to see if your compression in the number 1 cylinder is lower than all the rest.

 

isnt that wierd how you install an amp and sub and right after your plugs go bad?

my freind installed an intake on his f-150 and after it wouldnt start! we jumped it and it wouldnt stay running. (bad battery) but its wierd how these things happened at the same time!.

Gl with that cylinder and glaad u firgured it out!

 

Car is having allergic reactions to modifications that are not performance enhancing....

That is all.

 

I think i am having the same problems as you blue by ray. I just threw in some race gas at the track and my **** started stubbling real bad at WOT. I felt the same thing like i was getting fuel cut, but i think it is the plugs. I had some NGK BRP8IEX's next day air'd to me. So hopefully i can swap them out and everything is cool.

 

ok heres a good one for everyone. i return my car back to stock. car runs perfect. so i change out the spark plug wires to the stock ones start up the car and it back fires and is idleing really rough. put the new ones back in with the same outcome. any ideas?

 

Check all connections, where the spark plugs meet the wire, and where the wires meet the coils. Spray electrical cleaner on them if necessary. Make sure that you didn't hook up anything backwards.

 

i checked everything and there is no way to hook up the spark plug wires backwards. it was running just fine and then i swapped them and it didnt run fine...

 

Are you sure everything is tight? No loose connections? Make sure all the spark plugs are OK and have no been fouled.

EDIT: Wow I didn't see that you installed an amp...thats why you are having the problems.