New member, 1st post. Little vehicle history for help with helping me. 2011 1500 4x4 Suburban 1500. Has typical oil leak that I have hopefully corrected when it's running next. #6 DOD lifter failed closed. Followed UTube video and used special tool to unstuck the Lifter. Them did a mechanical (Vlom seal break & oil supply metal sleeve plug) and program delete. This repair lasted for about a year before the Suburban had another cylinder 6 failure code. Suspected that the lifters may have been damaged more than originally suspected. Removed Head only on this bank. Replaced both DOD lifters and both normal lifters. Replaced #6 Rockers and Pushrods. Reused all other parts for other cylinders. They looked fine with nothing jumping out while being inspected. Lubed and torqued everything according to manual. Cleaned all cylinder heads. Cleaned and polished Head to include intake and exhaust ports as far as dremel tools could reach. Released and blew everything out several times. Valve covers were modified to allow for additional oil draining. ( This is what I hope will help with oil leak/loss)
Now here's my question. Upon starting for the 1st time, the engine turned right over. There was a loud audible tick from around the #6 cylinder. Ran for 30 seconds or so. When turned off there was a loud metalic grinding noise and engine rotation stopped very abruptly. I added an oil flush additive and ran for a little over 5 minutes. The ticking subsided (not sure of whether due to oil circulation or temperature increase, truck hasn't ran in over a month) but the grinding noise (split second) and abrupt engine rotation were still present. When I drained the oil I noticed aluminum shavings during the hole drain process. I haven't cut the filter open yet, nor have I added the new high milage full synthetic oil back in. I have read where aluminum dust can be expected after a rebuild (this wasn't a full rebuild) and that it should be ok after the oil and filter change? I haven't completed that process yet because of the grinding abrupt stop issue and not wanting to make anything worse. All of this work was done in my tight @$$ garage wearing a head lamp using a manual and Utube. Please help me with coming up with next steps or suggestions on what the issue may be coming from??
P.S. I was told it was ok to only change out the lifters on one side and to re-use old components if they checked out ok. The valve cover for the other Head was also modified for better oil draining. When Intake Manifold was removed it was full of oil. More than I would have suspected and more than the 1st time I removed it. Please help, I can't afford a new engine or the time it would take. Thank you in advance!!!
Now here's my question. Upon starting for the 1st time, the engine turned right over. There was a loud audible tick from around the #6 cylinder. Ran for 30 seconds or so. When turned off there was a loud metalic grinding noise and engine rotation stopped very abruptly. I added an oil flush additive and ran for a little over 5 minutes. The ticking subsided (not sure of whether due to oil circulation or temperature increase, truck hasn't ran in over a month) but the grinding noise (split second) and abrupt engine rotation were still present. When I drained the oil I noticed aluminum shavings during the hole drain process. I haven't cut the filter open yet, nor have I added the new high milage full synthetic oil back in. I have read where aluminum dust can be expected after a rebuild (this wasn't a full rebuild) and that it should be ok after the oil and filter change? I haven't completed that process yet because of the grinding abrupt stop issue and not wanting to make anything worse. All of this work was done in my tight @$$ garage wearing a head lamp using a manual and Utube. Please help me with coming up with next steps or suggestions on what the issue may be coming from??
P.S. I was told it was ok to only change out the lifters on one side and to re-use old components if they checked out ok. The valve cover for the other Head was also modified for better oil draining. When Intake Manifold was removed it was full of oil. More than I would have suspected and more than the 1st time I removed it. Please help, I can't afford a new engine or the time it would take. Thank you in advance!!!
