novanut1964 Posted June 29, 2021 Share Posted June 29, 2021 new rebuilt 2.5, by an engine shop. the lifters are noisy to me. i took valve cover off, retorqued the pedestal nuts to specs, still noisy. changed breakin oil, tried marvel mystery oil in crankcase oil. listen to video i just posted, if it sounds normal let me know. the pushrods, i thot had play after torqued down. i don't want to run too much and hurt new rebuild cam. just got it to stay running. any suggestions? i have new elgin lifters and pushrods i can install if youall think it needs it. i need oil pressure gauge, plenty of oil on top of engine when took valve cover off. Link to comment Share on other sites More sharing options...
mjeff87 Posted June 29, 2021 Share Posted June 29, 2021 I'm not seeing your video.....are you saying one of the lifters is noisy or ALL of them? New lifters have to be primed. You'd think a rebuild shop would know/do that (not saying yours didn't) but it can't hurt to ask them or take it back and let them hear it. If it's a true rebuild with new cam/lifters, I'd get that MMO out of there pronto, but that's just me.... Link to comment Share on other sites More sharing options...
Jeep Driver Posted June 29, 2021 Share Posted June 29, 2021 A lot of engine builders are reporting flat tappet failure in the last year. Common problem now. Lifters are not hardened as they should be. Once the lifter has failed it also wiped out the cam. If your lifter does not have the line near the bottom as this one does it has not been hardened. Link to comment Share on other sites More sharing options...
novanut1964 Posted June 29, 2021 Author Share Posted June 29, 2021 https://youtu.be/8hp_otPmenQ Link to comment Share on other sites More sharing options...
novanut1964 Posted June 29, 2021 Author Share Posted June 29, 2021 i posted the video on my project page, here is the link to my channel, you can hear maybe one loud lifter tapping, possibly two when i was adjusting. finally got it running, but i will take it apart i don't like the noisey lifter sounds Link to comment Share on other sites More sharing options...
Jtrux Posted June 29, 2021 Share Posted June 29, 2021 I recently installed a GM crate engine in my brother's truck. Rather than risk any premature failures due to poor lubrication, I went ahead and bought Amsoil Z-rod oil which is designed to be run in these older, non-roller engines. Oil is cheap, engines are not. Link to comment Share on other sites More sharing options...
novanut1964 Posted June 29, 2021 Author Share Posted June 29, 2021 i put chevron diesel 15/40w has extra zinc. thanks Link to comment Share on other sites More sharing options...
mjeff87 Posted June 29, 2021 Share Posted June 29, 2021 Yeah....thats a dead lifter (somewhere). Sounds like an exhaust valve to me. You can pull the lifters on a 2.5 without pulling the head, you just need a good lifter tool. Could be a bent pushrod or a bad valve spring too. I still recommend taking it back to the shop that did the rebuild to let them have a crack at it. But if you don't want to, I'd start pulling lifters and looking at the bases like Jeep Driver suggests. Doesn't take alot to dish a lifter base. Or one can be stuck and not rotating correctly. I'd suspect you'd find it pretty quick if you pulled them. Link to comment Share on other sites More sharing options...
novanut1964 Posted June 29, 2021 Author Share Posted June 29, 2021 thanks i bought a lifter removal tool, need assembly lube, always $omething. Link to comment Share on other sites More sharing options...
novanut1964 Posted June 29, 2021 Author Share Posted June 29, 2021 a friend gave me the jeep, i emailed his engine shop about the lifter noise no response. he had the rebuilt engine a year never installed it Link to comment Share on other sites More sharing options...
eaglescout526 Posted June 30, 2021 Share Posted June 30, 2021 Yeah that sounds wayyyyyy to noisy for the 2.5L. Almost in a diesel like manner. Should be a bit more quiet so all you can hear is the ticking of the fuel injector and the sounds of vacuum. Link to comment Share on other sites More sharing options...
novanut1964 Posted June 30, 2021 Author Share Posted June 30, 2021 i started to disassemble the valve train , the new lifter tool didnt work, the adjuster to grip the lifter is down in the engine, i got 6 of 8 lifters out with the tool and a magnet. i modified the new tool, will try again in the morning. i stood my new elgin pushrod on a flat surface, next to the "new" rebuild pushrod, they are shorter, which may be why the lifter noise is happening. I will update 2nd rebuild of the new engine soon. Link to comment Share on other sites More sharing options...
mjeff87 Posted June 30, 2021 Share Posted June 30, 2021 The T-handle type pullers work pretty good. And they're great for re-installing them too. https://www.repairtool.com.tw/hydraulic-valve-lifter-puller-m202507.html Link to comment Share on other sites More sharing options...
novanut1964 Posted June 30, 2021 Author Share Posted June 30, 2021 IMG_9235.MOV IMG_9235.MOV i modified the t type lifter tool, with a piece of 1/2 conduit so i could tighten it from above. dropped a pushrod, almost went to the bottom of the engine, bought a grabber tool, on last attempt it drug it out, without having to take the head off. torqued the rocker arms. found two new silicone plug wires wouldnt go on far enough cut the boots till get a new set, cleaned the spark plugs. still makes a lifter tick but better than it was. i assume the new cam prob didnt break in right. IMG_9235.MOV Link to comment Share on other sites More sharing options...
novanut1964 Posted June 30, 2021 Author Share Posted June 30, 2021 i looked for my feeler gauges, to measure the difference between the original new pushrods and the new elgin pushrods, i could see they were shorter. didnt find feeler gauges. looked like .010-.012 shorter just guessing Link to comment Share on other sites More sharing options...
novanut1964 Posted June 30, 2021 Author Share Posted June 30, 2021 Link to comment Share on other sites More sharing options...
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