jmahle67

hey guys so im in the middle of changing plugs and wires on an 07 mustang and i did the passeneger side #'s 1,2,3 and after i get the wires changed and the plugs in i start it up to move it and i get a horrible ticking noise and a rough idle, i do the wires on the other side and go back to the first side, and take all the plugs out inspect and put back in and same ticking noise, and then i change out to the original wires and same thing still. what is wrong here?

jimkaray

check to see if one of the wires is not snapped down tight at the coil pack and is shorting out.

jmahle67

So pulled everything back out and my plugs r getting the tip smashed in any ideas?

jimkaray

Well now that's scary. You must have the wrong plugs. Sounds like they are too long for your application and the piston is coming up and smacking the tips. This is not good to say the least. check the part # vs the application ASAP.

jmahle67

I checked part numbers when I pulled old plugs and compared they same length

jimkaray

What do you mean by smashed in then? The gap seems smaller then when you set it or the ground strap is pushed up against the electrode?

jmahle67

Its smashed against the electrode

jimkaray

this is happening to all the plugs so I can only say they are not the correct plugs. You said you checked p/n but its not clear if you replaced with the same part #. Post a side by side pic if you can and check the length again. Measure from where they seat to the head down to how far they extend into the combustion chamber.

JimC

With your mods listed in the sig the only explanation is that you have the wrong plugs. Like jimkaray said, measure the thread length because a stock plug shouldn't stick far enough in that the electrode and ground strap are getting smashed together.

Also, make sure when you get it back together that you have the firing order correct on the 4 - 5 - 6. It doesn't go in order like the 1 -2 -3; it is 5 - 6 - 4 on the coil.

jmahle67

This is a completely different car than in my sig. Ill see if I can get pics later today after work but they r def the right part #