Dave dog Posted December 30, 2019 Share Posted December 30, 2019 Sadly I have an noise ticking away on my top end. The only thing I noticed was only one exhaust valve push rod was spinning . Is that normal? Quote Link to comment Share on other sites More sharing options...
alex g Posted December 31, 2019 Share Posted December 31, 2019 I believe it's normal for push rods to spin. Mine do anyway on my E6. Have you adjusted top end? 1 Quote Link to comment Share on other sites More sharing options...
tjc transport Posted December 31, 2019 Share Posted December 31, 2019 agreed. pushrods are supposed to spin, otherwise they would wear the ends flat. . Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment Share on other sites More sharing options...
fjh Posted December 31, 2019 Share Posted December 31, 2019 (edited) 16 hours ago, Dave dog said: Sadly I have an noise ticking away on my top end. The only thing I noticed was only one exhaust valve push rod was spinning . Is that normal? Have you checked your valve set?If not do so! This can be injector noise it can be signs of a bad lifter! a push rod spinning could mean a bad lifter although the rods will spin normally to some degree! Check your pan plug lossen it a couple of turns if it feels like gravel on the threads you may have a lifter failed! Edited December 31, 2019 by fjh Quote Link to comment Share on other sites More sharing options...
JoeH Posted December 31, 2019 Share Posted December 31, 2019 On most engines, pulling valve covers and oil pan gives you visual access to almost the entire engine, and it doesn't cost anything other than a few gaskets and your time. If it's still making a ticking noise after you've adjusted the valves then start cracking injector lines to look for a weak injector. I had on my E7-350 a noise that sounded like the engine brake coming on, but only above 1700 rpms. Turned out to be a fuel filter clogging up. Did it again a few days later, and a second set of filters cleared it up for good! 1 Quote Link to comment Share on other sites More sharing options...
Rob Posted December 31, 2019 Share Posted December 31, 2019 (edited) I'd do a complete overhead run first ensuring your rocker bridges are correctly adjusted if they've not been touched in a while too. Edited December 31, 2019 by Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
Dave dog Posted January 1, 2020 Author Share Posted January 1, 2020 Thanks for the replies. Yes I have had the top end checked by a cat/Cummins mech never worked on mack or v8. All were in spec. Injector was the first thing I thought,cracked them all but one that stuck /frozen(nut to the injection line) at the pump. The odd thing is the noise is hard to hear until fully warmed up. 165°f+ Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.