I wondered about that too. The best plug I ever used was the NGK Iridium plug. They're about $7-$9 each but well worth it. I must say that I have not tried these in a car or truck. I used these in a high performance Zenoah gasoline engine in a radio controlled helicopter. I ran the NGK Iridium plug, Coleman camping fuel instead of gasoline and mixed AMSoil Sabre 100:1 Synthetic 2 stroke mix. Man that was a sweet setup, it seems to produce about 10-20% more power, never flamed out and had an idle that was smooth as butter. Plus after dozens of hours of flight time the cylinder walls still showed signs of the original honing and cross-hatching.

You can order those plugs in various temp ranges from cool to hot.

 

Sorry I missed your heat shield question....

It is part of the plug wire.... and there is a little spring too...

 

Thanks for the reply and especially for that picture (a picture is worth a thousand words)so they say. I couldn,t for the life of me figure that out.

 

Anytime... I like taking pictures.... I'm just sorry it took me so long to reply...

 

I hope you,re still around Muddydawg because I am having a hard time pulling the wire off the plug. The first plug I try and I can,t pull the wire off. Is there any trick to this?

 

Twist..... Don't yank them.... you will destroy the wires....

 

you should do that on every vehicle

 

That,s the reason I ended up buying the new taylor wires. I couldn,t get the last one off and ended up pulling it apart. Anyhow at least I know my plugs and wires are new now. Truck runs great,seems a little smoother now.

 

Never hurts to get new wires.... and if you get the expensive ones.... they have 3 year warranties.... then when you "accidently" destroy one next time..... they are free....