found on another site but as it is on the INTERNET it must be gospel aye? read on: okay, here is the deal. i have been in a discussion on another board about diesels in general, and this person is trying to convince me that dodge/cummins uses spark plugs, and the psd and D/A use GP's. here are a couple quotes from this person.... let me know what is correct. "I agree with that EXCEPT that Dodge diesels do NOT use glow plugs. They use spark plugs. On the 12 valve and the 24 valve cummins. Ford and Chevy do use glow plugs, however. Which means you will still be replacing spark plugs, wires, etc." "I happen to know SEVERAL people that work at Zangara Dodge in the repair department. Cummins DO use spark plugs. They the ONLY diesel that does. I do happen to know engines work, no need to explain. I took Auto Shop and have fixed many vehicles. I NEVER take my vehicles to a shop, waste of money IMO."