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  1. J

    Injector blowby LB7

    I dyed the fuel with a UV and ran it without valve covers, it looks like it’s coming from around where the hp line meets the injector but it’s hard to tell with all the oil also now having the dye in it. I replaced the hp lines, nothing changed. I went through efi live and commanded higher fuel...
  2. J

    Injector blowby LB7

    Man I’m trying but really the only time I can put a lot of time into testing is on Sunday afternoons. I don’t really have time on an evening to pull valve covers or do anything super invasive so I try to just to the quick easy stuff on weeknights. I ran it with no valve covers today Sent from...
  3. J

    Injector blowby LB7

    Yep, vacuum is good on the return lines Sent from my iPhone using Tapatalk
  4. J

    Injector blowby LB7

    I didn’t have time to pull my valve covers tonight but I drained the oil and refilled it, as well as checking my balance rates and pulse width. I figured out the blowby was a result of an overfull crankcase, it went away after I changed the oil. Here are the results of my balance and pulse...
  5. J

    Injector blowby LB7

    I’m gonna get dye and try that, in the meantime I pulled a vacuum on both my fuel rails and they held a perfect vacuum so I think I can rule out hp lines. I’m at a total loss. Can I tell if an injector is cracked using efi live? Sent from my iPhone using Tapatalk
  6. J

    Injector blowby LB7

    Okay, another update: my blowby isn’t from the injectors. We tore it down, replaced the return lines, never touched the injectors, and the blowby completely stopped. However, it’s been two days and my crankcase is already full of diesel again and blowing by again. I’m thinking maybe it’s the...
  7. J

    Injector blowby LB7

    Ohhh good idea. I can get the adapter from the compression tester and hook a compressor to it Sent from my iPhone using Tapatalk
  8. J

    Injector blowby LB7

    I could do another one but last time the numbers weren’t really off enough to tell me much. I know it’s not rings because every time I reinstall the injectors, the blowby stops for a day or two. Sent from my iPhone using Tapatalk
  9. J

    Injector blowby LB7

    Okay so I reinstalled everything again and once again I’m getting blowby. There was no blowby yesterday or this morning, but now there’s just enough to make the oil cap jump around. I replaced hold downs, coppers, and hold down bolts. Any ideas? I’m at a total loss. Sent from my iPhone using...
  10. J

    Injector blowby LB7

    I got the hex head ones from KB diesel Sent from my iPhone using Tapatalk
  11. J

    Injector blowby LB7

    I torqued them a little past spec, the one that was leaking I torqued quite a bit further, about as far as I felt it could go without damaging the bolt or threads Sent from my iPhone using Tapatalk
  12. J

    Injector blowby LB7

    Yeah that’s what I’m doing but I already redid it once and it didn’t fix it, so I’m trying to track down what keeps causing the problem. I’m redoing the injector job right now, I’m asking for help so it doesn’t happen again. Sent from my iPhone using Tapatalk
  13. J

    Injector blowby LB7

    Hey y’all I posted another thread about some of the problems I’m having but I’m making a new one for this specific question. I did new injectors and after driving for a couple days it started blowing by and making oil. I found a leaking injector return line and discovered it’s just been pouring...
  14. J

    Injector blowby LB7

    Okay, I spent a few hours on it last night and have a few updates. 1. I did the vacuum test and the return lines were leaking like crazy, I found the leak by using a pump to pressurize the lines and used a little soapy water to find the leak. Turns out it wasn’t seating against injector 7. I...
  15. J

    Injector blowby LB7

    What’s the best way to test that? Sent from my iPhone using Tapatalk
  16. J

    Injector blowby LB7

    Not sure about the hold downs, I’ll check tonight. All the discs are there, I double and triple checked Sent from my iPhone using Tapatalk
  17. J

    Injector blowby LB7

    I reused them the first time, I replaced them the second time. I also replaced all the fuel return banjo bolts the second time. Sent from my iPhone using Tapatalk
  18. J

    Injector blowby LB7

    Hey guys, I’ve got a problem that’s been totally stumping me. I just replaced my injectors (45 overs from DDP, used but unknown miles), injector cups, rebuilt my turbo (67mm kit from KB diesel) and did my head gaskets. After I put everything back together, it ran well for about thirty minutes...
  19. J

    Range shift inhibited on new trans build

    It was the stupidest thing man, I didn’t have enough fluid in it. I didn’t realize I had a deep pan, I filled it up with like 14 quarts and checked it and it was good but I didn’t give it a chance to actually circulate before I checked the fluid level, so it looked good when I checked it but...
  20. J

    Range shift inhibited on new trans build

    Here are the codes I’m getting— P0748, p0763, p0768, p0773, p0778, p0841, p0847, p0872, p0873, p0875, p0701, p0880, p0711, p0717, p0721, p0722, p0731, p0732, p0733, p0734, p0735, p0736, p0741, p0742, p0763, p0768, p0773, p0846, p0848, p0871, p0873, p0747, p0777, p0746, p0 776, u1096, p0743...