So I have been down quite a path in the last month, after years of wanting a duramax Im finally there. I had a 5.3 1500 with 267k did tons of upgrades to it over the years, it had a real mean appearance so it grab the attention of a 16 year old boy. He lived close by saw my ad that I was trying to sell it and get a duramax, ended up that his father had a duramax that they had just decided to sell. So long story short he wanted my truck so we did a trade and I put some money on top walked out of a 2004 gas silverado with 267k into a 03 lb7 with 124k. Right off the bat when I got it she cranked a bit more then normal to get started I plan on doing tons of upgrades so I wasn't to worried figured id be able to fix it. They told me that they had rebuilt the filter head and that they didn't get the full kit so that was the reason for the issue and to just pump the primer and she wold start up. So first thing i did was rebuild the filter head and replace the hoses coming off of it. It ran great right after the rebuild, i was a little iffy that i had pinched one of the o-rings though. It very quickly went back to the same state, so I ordered another kit and rebuilt it again... same issue. Ive been reading all I can on here and other sites doing misc things. For some reason its really hard for me to tell whether the oil level has gone up it almost seems as if it has but then again it doesn't.. I did the paper towel test and to me this doesn't seem normal correct me if I'm wrong i can't get the oil to drip off the dipstick it clings to it and doesn't seem to want to come off so i just wiped it and according to what they say about there being an outer ring there is one.. If there is fuel getting in the oil it doesn't seem like its much? I was close to ordering some injectors and decided to lean a different way and I got a Fass lift pump. Right off the bat it took a little longer then expected for the fass system to prime up, and whenever its running without the engine on it sounds like its surging. I did find some leaks right off the bat after getting it installed I fixed them, then today found a leak on the lift pump fixed that. The lift pump appears to be ok but last night when I got fuel I went to dump in some stanadyne and either water vapor or smoke was coming out of the filler neck. Today when i was fixing the leak on the pump i disconnected the line real quick lost a couple quarts of fuel into a pan and sealed it back up, when i looked at the pan i saw tiny metal shavings in the pan and i believe they came from the fuel that had drained out... could this be the fass pump? Does fuel actually run through the motor? Ontop of all this after getting the fass pump installed it was starting up much better for a bit now it seems like its starting to have a hard time again. Ive tried to bleed it before starting and various things and still seems to be the same. Any advice on what to do next? There is no white smoke, i know i had an air issue before the fass pump and still possibly might have a leak somewhere. My buddy has an 02 lb7 with compound turbos fully built and all that and has a snap on computer I don't have any injector codes or anything just egr code and glow plug codes. I also disconnected the vacuum line for the egr, hopefully thats a legitimate thing to do. He also ran a test on his computer for the injectors and he says they are fine, but i know that something is up. Another thing I forgot to add I also notice that at 1500 rpm in park the engine will shake. Also the reason for posting this all together which I forgot to mention was originally before the lift pump the injectors sounded abnormally loud in my opinion but only sometimes, now that I have the lift pump it seems as if that noise has gone away. But one thing it has done all along that I can't figure out is sometimes under acceleration up in the higher rpms it sounds normal then all of a sudden it seems as if something cuts out and it almost goes partially quiet for a second then kicks back in. Sorry for the life story
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