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I accidently posted this in the Gen 10 150 forum. Well I have an 02 250 SD 5.4. It has developed a miss when accelerating. You can ease of it a little and it clears up.Only acts up when acceling. I had this problem 23 times before. it was either a coil or moisture in the plug boot/wire. I pulled out, ohmed, blew out the plug port with air then put wd40 on each boot to make sure it went over the plug well and maybe run off any moisture. It did improve slightly but still there. I run Lucas oil cleaner twice a month so I dumped some sea foam in today just in case. It ain't throwing any codes and idles perfectly so without diagnostic tools I'm lost. Any ideas?