Blown engine or failed injector? -- need help
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Logistics Pro
Joined: Oct 2008
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From: Avilla, IN
Did you pull fuse #22, or in some other way disable the injectors, for the test? You can also crank the starter by running a jumper wire from the battery + to the small terminal on the starter relay, without even having the key in (be SURE you're not in gear!).
If you have a good tester, it should go up with every stroke, about 8-10 times, then level off, and shouldn't go down in between until press the release button on the tester. You shouldn't have to be watching the needle while you're cranking the engine.
Yes, the fact that they all registered something is good news, but it sounds like the real take-away is that you need to get that tester working better.
If you have a good tester, it should go up with every stroke, about 8-10 times, then level off, and shouldn't go down in between until press the release button on the tester. You shouldn't have to be watching the needle while you're cranking the engine.
Yes, the fact that they all registered something is good news, but it sounds like the real take-away is that you need to get that tester working better.
I had all the UVCH's laying on the bench and disconnected the huge engine harness connector to get it out of the way, so the #7 injector should not have been spraying fuel, especially that much.
I will take a look at the anti-freeze and report what I find.
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Logistics Pro
Joined: Oct 2008
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From: Avilla, IN
I took a sample of the antifreeze through the drain **** in the radiator. Below is a picture. It looks kinda brown. I couldn't find a compression tester gauge that shows maximum PSI that is rated for 400 psi so I worked on my simple gauge and had my father in law watch it as I cranked the motor over.
The numbers were consistent between cylinders today, but still low. I decided that since they were all giving about the same results that I didn't really need accurate numbers at this time. So I moved on.
I pulled the injectors and found that my past dumba$$ mistake has caught up to me. The second picture is how about half the injectors looked when I pulled them out. A year and a half ago I put new external rings on and didn't have a small enough torque wrench so I guessed at it. BIG MISTAKE. The hold down bolts on some of them had worked loose.
#7 seven luckily did not have a busted off tip! Who-hoo! But the lower most o-ring was almost cut in half and the lower portion of the injector looked about like the one in the picture.
Could the torn ring have been the problem or it is still an internal problem in the injector? Either way I will be sending them to Rosewood. As far as I know they are original injectors just shy of 280k miles.
The numbers were consistent between cylinders today, but still low. I decided that since they were all giving about the same results that I didn't really need accurate numbers at this time. So I moved on.
I pulled the injectors and found that my past dumba$$ mistake has caught up to me. The second picture is how about half the injectors looked when I pulled them out. A year and a half ago I put new external rings on and didn't have a small enough torque wrench so I guessed at it. BIG MISTAKE. The hold down bolts on some of them had worked loose.
#7 seven luckily did not have a busted off tip! Who-hoo! But the lower most o-ring was almost cut in half and the lower portion of the injector looked about like the one in the picture.
Could the torn ring have been the problem or it is still an internal problem in the injector? Either way I will be sending them to Rosewood. As far as I know they are original injectors just shy of 280k miles.
Posting Guru
Joined: Aug 2004
Posts: 2,417
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From: Braham MN
That injector is pretty dirty on the end, it looks like it was leaking combustion gasses past the copper washer on the bottom.
A cut o-ring could cause the problems you had but I would think it would set a CEL in the process.
Diesel Rod
A cut o-ring could cause the problems you had but I would think it would set a CEL in the process.
Diesel Rod
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Logistics Pro
Joined: Oct 2008
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From: Avilla, IN
There was no CEL when it happened but it working because it came on when i turned over the engine without having the harness plugged in.
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Logistics Pro
Joined: Oct 2008
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From: Avilla, IN
I got my rebuilt/upgraded stage I's from Rosewood on Friday, a new intake boot and SD VC gaskets and harnesses from Riffraff. I also did the "Perlich mod" (atleast that what my friend calls it since I'm probably the only one to ever do it, but thats a different story.)
I got 'ol Great White started up Sunday evening, and then finished buttoning everything up Monday afternoon in the stinking rain. She is running like a Champ now. I cannot believe how smooth it pulls through the rpms. It used to be pretty shaky in the 1000-1500 rpm range. Also it feel like it actually has some power now, but the roads have been wet so evertime I push it a little I just spin the wheels (which is more than I could say before).
Thanks to everyone, including Jim and Clay, for all the help. Now I just need a chip!!
I got 'ol Great White started up Sunday evening, and then finished buttoning everything up Monday afternoon in the stinking rain. She is running like a Champ now. I cannot believe how smooth it pulls through the rpms. It used to be pretty shaky in the 1000-1500 rpm range. Also it feel like it actually has some power now, but the roads have been wet so evertime I push it a little I just spin the wheels (which is more than I could say before).
Thanks to everyone, including Jim and Clay, for all the help. Now I just need a chip!!
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