Injector temps?
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Senior User
Joined: Aug 2010
Posts: 239
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From: Agawam MA
Injector temps?
Hey all, here is one for y'all, I was playing around with my new Thermal infra red thermometer gun and noticed something...
Most of my injectors, when I point the gun at the tightening nut, seem to run around 105 degrees, the #2 and #4 injectors seem to be a bit hot, about 130 degrees... is this normal, or is this a problem?
I also noticed my idle is ever so slightly a bit rough, not majorly, but a bit. This is when the truck is fully warmed up by the way. No smoke except under heavy throttle, then it is just a gray haze....
Something to worry about, or leave it alone?
Most of my injectors, when I point the gun at the tightening nut, seem to run around 105 degrees, the #2 and #4 injectors seem to be a bit hot, about 130 degrees... is this normal, or is this a problem?
I also noticed my idle is ever so slightly a bit rough, not majorly, but a bit. This is when the truck is fully warmed up by the way. No smoke except under heavy throttle, then it is just a gray haze....
Something to worry about, or leave it alone?
Fleet Owner
Joined: Jul 2006
Posts: 20,345
Likes: 802
From: Mi'kma'ki
i don't think id go on that much.
if you were to swap injectors and the heat followed with the injectors,then ok.you may have found a problem.chances are it wouldn't.try it though if you have another install kit.
if you were to swap injectors and the heat followed with the injectors,then ok.you may have found a problem.chances are it wouldn't.try it though if you have another install kit.
Junior User
Joined: Jul 2010
Posts: 54
Likes: 1
From: Jacksonville Florida
1991 Super Duty, 7.3 IDI/NA
Ok, if 6 injectors are running about the same temp say 145 at idle with the engine at normal temp does that mean they are good or bad, the other 2 are running about 120. Today a ticking noise started coming from passenger side front, return lines have been replaced but not the injectors, I am guessing its time to replace them.
Ok, if 6 injectors are running about the same temp say 145 at idle with the engine at normal temp does that mean they are good or bad, the other 2 are running about 120. Today a ticking noise started coming from passenger side front, return lines have been replaced but not the injectors, I am guessing its time to replace them.
