I've been looking all night and can't find a thread dealing with my issue.
I'm changing my plugs for the first time on my '92 SC400. I don't have a clue what to take off, leave on or dismantle. Please give me instruction or directions to a thread with step-by-step or anything.
Thanks!

 

Hello,

maybe its not 100%, but you can have a look at

http://www.lexls.com/tutorials/ignition/sparkplugs.html

However it is for an LS400, the SC400 has the same engine, so it should be very-very similar :-)

Hope this helps,
Attila

 

moved to proper forum.

 

lucky you dont have a sc300 you would of been lost

 

That's perfect!
Thank you very much for your help Attila

 

Good DIY. Anyone have another opinion on the Iridium IX?

 

Thanks for this info. I'm planning to tune up my engine soon.