Hey Everyone.

I changed the spark plugs on my 740 Turbo and one of the spark plugs was deffective that i put in, it wasnt sparking, thus driving on 3 cylinders. What damage can this do, considering i was driving for approx 10mins in this condition until i was able to get back to my garage to fix the problem.

And now i have this clicking sound coming from the engine. Is it possbile that this threw off the timing of something?

 

You should be fine.
Are you sure the clicking isn't arking from a sparkplug wire?

 

i use bosch or ngk conventional plugs, i have had nothing but trouble out of the platnium plugs. They work for a few months and then the platnium end falls out. I have had this problem several times so I will no longer use platnium plugs. If it has been awhile it is a good idea to change your plug wires and your cap and rotor too. If you have a lot of misfireing it can damage the catalytic converter but if it just a little you are ok.