Pop testing injectors *video*
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Postmaster
Joined: Jun 2008
Posts: 2,500
Likes: 2
From: Michigan
Pop testing injectors *video*
Thought you guys would appreciate this. We pop tested a 7.3 IDI injector and an HEUI injector in class. The IDI injector was popping at 1800 psi and the HEUI was popping at 4600? IIRC.
YouTube - pop testing IDI injector
YouTube - pop testing HEUI injector
YouTube - pop testing IDI injector
YouTube - pop testing HEUI injector
Cargo Master
Joined: Feb 2010
Posts: 3,493
Likes: 3
From: NY
A HEUI, my question is what is a HEUI out of??
I saw the vids, watched em' and forgot to respond awhile back John, Was the IDI one a BB? If so, it was popping slightly low. Should be around 1900psi.
I saw the vids, watched em' and forgot to respond awhile back John, Was the IDI one a BB? If so, it was popping slightly low. Should be around 1900psi.
Posting Guru
Joined: Mar 2005
Posts: 1,701
Likes: 0
From: KY
It isn't a HEUI.. They are Hydraulically actuated Electronic Unit Injector. There are several engines that use them. The power stroke being the most common to most people. I have one of those pumps and they are fun to play with. The only thing those will test are nozzles. It is called a VOP test. Valve Opening Pressure. Injectors have to be in a testing block made like a head. You have to run a fuel supply and an oil supply then hit them with electricity.
I had a chance to buy a pump stand and like an idiot was messing around and missed it. Was at an auction.
Nice Vids. I always like classroom instruction as well as real life. You can learn allot.
http://www.youtube.com/watch?v=5QallRvLXdg
I had a chance to buy a pump stand and like an idiot was messing around and missed it. Was at an auction.
Nice Vids. I always like classroom instruction as well as real life. You can learn allot.
http://www.youtube.com/watch?v=5QallRvLXdg
Postmaster
Joined: Mar 2008
Posts: 3,255
Likes: 0
From: Sweet Home, OR
The DT 466s are HEUI also. I'm sure Catfish already knows this.
I used to write off the system as just overly complicated but they have at least one good point......if you loose oil pressure your engine quits running.
Pretty hard to destroy your motor by an oil pressure loss that way.
I stiil prefer the simplicity of the standard mechanical IP and injector system however.
I used to write off the system as just overly complicated but they have at least one good point......if you loose oil pressure your engine quits running.
Pretty hard to destroy your motor by an oil pressure loss that way.
I stiil prefer the simplicity of the standard mechanical IP and injector system however.
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Posting Guru
Joined: Jan 2010
Posts: 1,665
Likes: 4
From: Terre Haute, IN
Thanks for pointing that out cat (i would have if you didnt 
).
I cant tell what the second one is out of...
Dodge, what about mechanical unit injectors?
).I cant tell what the second one is out of...
Dodge, what about mechanical unit injectors?
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Postmaster
Joined: Mar 2008
Posts: 3,255
Likes: 0
From: Sweet Home, OR
I'd love to have a bobbed-deuce with a mechanical DT 466. I'd still prefer a standard IP/injector system though.
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