Hi, I'm looking to buy a new set of cops off of ebay in the next week or so. I looked and saw a bunch of diffent ones (yellow, black, etc.) and they seem to run all over the place on price, i even saw a set of 8 for 60 bucks! Just wondering what everyone's experience and opinion on them is? Let me know. I have a 99 with the 5.4.

 

Ive heard a lot of guys using the ones from sellers (uneeksupply) and (global).
They have had good luck with them.
I did not have good luck with them on my truck though.

For the price there worth a try.

I bought a 10 pack (for V10) and had one bad one right out of the box. So it's a good idea to buy 10 instead of 8.

 

Thanks for the reply...
I was thinking to buy 10 just to have a couple extra anyway... they are the same cops for the v8 and v10 right? It only makes sense since the price for 8 or 10 isn't that much different.

 

Yes ,for your 99 the V10 and V8 are the same COP.

 

Well I got my ebay COPS today, went with Global Automotive... They were super fast on shipping and a good price too. I changed out the COPS, the back two on the driver side were really a pain, mostly just getting that dang screw back started in. Took the fuel rail off and it was better, just can't see anything once i stick my fat hand back there. Unfortunately, it didn't fix my problem. Still feels like a slight miss at idle and at 1000 and 2000 rpm i get a kind of rumble. Kind of at a loss, I guess it could be a bad plug... but I'm not even gonna try to hassle with that... I"ll pay the dealer his $300. I'm thinking to maybe check that rubber elbow on the back of the intake... not sure that would give me my problem, but it does seem alot of guys have had it go south.