brcree Posted September 3, 2015 Report Share Posted September 3, 2015 Hello....need to change out spark plugs on my 94 Deville. Is there a easy way to get to the back ones? Never changed them before now. Link to comment Share on other sites More sharing options...
brcree Posted September 3, 2015 Author Report Share Posted September 3, 2015 Hello.... its time to replace the spark plugs. Is there a trick to getting to the back plugs? What is the easiest way?...or is there one? Link to comment Share on other sites More sharing options...
Cadillac Jim Posted September 3, 2015 Report Share Posted September 3, 2015 No easy way, other than jack up the cradle. Use a plug wrench ratchet with a floppy head, a purpose-designed plug wrench socket, and be prepared for a tough job. Use a torque wrench for re-install. Re-use of old plugs is to be avoided because new plugs come with thread anti-lock and insulator silicone per-installed in just exactly the right way. Check the gap in each new plug. If it's not exactly 0.050" then the plug was dropped and don't use it. Be careful with the platinum electrodes on both ground and center terminals when you check the gap. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
brcree Posted September 3, 2015 Author Report Share Posted September 3, 2015 Hey Jim....thanks for the reply...thought as much on the job being a SOB! Yes....I never reuse old plugs either! Well after a coil replacement, I'll tackle the plugs. Link to comment Share on other sites More sharing options...
Shatzy Posted September 3, 2015 Report Share Posted September 3, 2015 Not sure about 94 models, but Caddy dealer mechanic told me it's quite difficult, even for them, to change out plugs & coil on 2000 + Deville. Steve M Link to comment Share on other sites More sharing options...
barczy01 Posted September 3, 2015 Report Share Posted September 3, 2015 They are easy to do. Just move the heater hoses out of the way and take your time. The hardest part might be removing the plug wires from the spark plugs. If, you have a lift you can do them from the bottom. Link to comment Share on other sites More sharing options...
brcree Posted September 5, 2015 Author Report Share Posted September 5, 2015 Thanks Bar....will be trying this....soon. Link to comment Share on other sites More sharing options...
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