Which COP's
 

Traded my 01 in for an 05. Plugs were changed at 130k and 1 COP. Have a set of DG 508's on hand from the 01. Looked at Uneek's and can't find the same part # which is 3L3E-12A366-CA. Close match is the DG 511's. Are these the ones I need or can I switch boots.

The 5.4 3v takes DG511's, you can't use your 508's.

I bought some off ebay from Global. I don't have the number right this second, but i'll find the box they came in when i get home from work this evening and let you know.

I got 8 of them for right around $100 and they have been working great!

DG511 like glc said. save your old ones in case of failures in the future..

There you go... Leave it to jbrew to come through!

Thanks for the replies fellas. Wanted to make sure before ordering. Guess I'll have to put the 508's up for sale. Glad the previous owner had the plugs changed. Found out thru CarFax report and called dealer. They said 3 broke and changed # 6 coil. Have a low grade miss showing # 3 now, so I'm gonna change them all.

Never done the coils before on these engines. Where exactly does the grease go? Outside on the boot or in the end?

Inside the boot, try not to get any on the contact spring.

On my new COPS, the spring was flush with the end of the boot IIRC. How do you keep it from getting on the spring?

Besides, doesn't the dielectric grease conduct?

I posted this in another forum, ~

Dielectric grease is a nonconductive grease. Because it is nonconductive, it does not enhance the flow electrical current. Electrical conductors should not be coated with dielectric grease prior to being mated. However, dielectric grease is often applied to electrical connectors, particularly ones which contain rubber gaskets, as a way to provide a nonconductive lubricant and sealer for the rubber portions of the connector.

The widest use of dielectric grease is in high-voltage connections associated with spark plugs. The grease is applied to the rubber boot of the plug wire or boot for dedicated,- Coil over plug (COP) systems. This helps the rubber boot slide onto the ceramic insulator of the plug. The grease also acts to seal the rubber boot, while at the same time preventing the rubber from becoming stuck to the ceramic. Generally spark plugs are in located in areas of high temperature, and the grease is formulated to withstand the temperature range expected.

Another common use of dielectric grease is on the rubber mating surfaces or gaskets of multi-pin electrical connectors used in automotive and marine engines. The grease again acts as a lubricant and a sealant on the nonconductive mating surfaces of the connector. It is not recommended to be applied to the actual electrical conductive contacts of the connector.

I made a Video of how to apply, but I must have deleted it $%%%**&&$%!! :rolleyes: I think user Toyz had asked for it and I can't seem to locate it.

Anyway, about your question:

Spring/ plug contact end:

1.) Remove the boot from the coil, -apply grease to the inside of the boot w/long bladed screwdriver.

2.) Push boot back onto the coil. With a pair of hemostats pull the spring from boot end approximately 1/2" past. Grab the spring w/fingers, unlock hemostats, then re-clamp the hemostats to keep the spring from recoiling into the boot.

3.) Clean the spring end w/Lacquer thinner or Denatured alcohol, A grease cutting agent of some kind. Release Hemostats , the spring recoils in to the boot. Then grease the top boot seem to seal from moisture.

4.) Install coil.

You can also grease the gap between the cylinder head and boot after you install.

The coil electrical connector can also be done or you can use a silicon wire sealer for that.

Note: When you pull the spring past the boot end to clean, this also tests your spring to coil blade connection. If the spring by chance pulls free from coil blade, you had a bad connection. The spring must connect to the coil blade securely.

Good Luck :)

Thanks again jbrew. Looks like I have another project for tomorrow, because I made sure I squirted a quite a bit of goo up in the COPS and the COP/injector connections before install. That might not be helping my slight miss at idle problem...

This should be saved in DIY or somewhere. Have searched and couldn't find anything on how to apply the grease and where not to. Thanks for the in depth explanation.

Removed all the COPs and cleaned the dielectric grease out of them. Cleaned all the electrical connections to them and the injectors.

Still have the slight stumble/misfire at idle. GRRRR...

rocket - What's the story on the your coils? What kind are they, - they new? Or did you get some wet ?