Hi, Just wanted to ask a quick question about which spark plug you find to work the best , I have a 1997 dodge B3500 full size van which is converted into a camper van, I tried to upgrade to those Iridium type spark plugs, but the van ran terribly, could barely even start, Been reading a lot on line, and many people just stick with the old copper standard type plugs, if you have any experience which works well for you, I would be glad to hear it,,, thank you,,,,Take care,,,,

 

Factory copper core OEM plugs are the best.

 

I'm running AUTOLITE 5224 spark plugs and they work great.

 

I just installed NGK Iridium plugs, new wires, cap and rotor. The engine runs great although it seems to take a little longer to start.

 

I have been using nothing but plain copper autolites for years with no issues whatsoever. You really don't need fancy plugs.

 

I got the plugs at the same price as the coppers. I figured I would try them out. My starting is progressively getting longer. I will most likely go back to copper.

 

Thanks for your input, I think I will go back and use the copper plugs, and just be safe,,,I was hoping for better fuel economy with the modern plugs, but I didn't have any luck,,,thanks again,,,