2 Plugs getting fowled, Pkease help

[2slo93]

I have a 93 Gt, and recently my back 2 spark plugs have been getting fowled up so badly it causes the car to almost not run. All the other plugs are perfect except those back two. I have checked all the wires, cap, rotor, and even put in new plugs but it is still happening. I believe it is bad valve seals?, any other suggestions??????

 

[Demented4.6]

could also be injectors are stuck open and constantly shooting fuel.. i have had this problem before on one plug...

 

[2slo93]

Is there a way to test fuel injectors...i know you can have them cleaned but it is almost as much as just buying a new set! Thanks for the help.

 

[Notchbck93]

Ya , this is a bit of a pain , but move the two injectors up to the front and see if those plugs start fouling.