I AM LOOKING AT BUYING A 99 3500 AND I TEST DROVE IT AND I NOTICED IT HAD A SLIGHT MISS WHEN WARMED UP AND I CHECKED THE EXHAUST OF EACH CYLENDER AND THE NO.1 CYLENDER RAN 20 DEGREES COOLER THAN THE REST I THOUGHT THAT NO.1 RAN THE HOTTEST COULD THAT BE RELATED TO THE MISS

 

I am no expert, but I always thought the opposite...that number six would run the hottest cause it is farthest from the air intake.<br><br>A miss can be from other things, too...fuel filter dirty, bad lift pump, etc...

 

yes the #6 piston runs hotter.<br>Its your lift pump. I have driven many of trucks with this problem.<br>DM01

 

how did you measure the temp on each one<br><br>was it one of those laser things