JEEPOHOLIC Posted January 17, 2017 Report Share Posted January 17, 2017 Lifter ticking sound So a nasty lifter ticking sound has revealed its self to me, it started about 2 months ago, then it was just at a cold start up and would disappear, lately it's still at start up and sometimes stays around for a while, it's rather unpredictable the motor is a re-furbished 3126b rated at 300 hp in a 1999 Freightliner Sports Chassis with a 6 speed automatic, the motor has about 45K on it now, today I cracked the valve cover and made some very minor adjustments to the rocker arms, almost all were spot on according to the factory marks on the locking nuts, and the ticking continues, possible causes a hydraulic lifter that has failed, but one would think during the adjustments it might make its self clear by the slack in the rocker arm or the factory's marks on the locking nuts, any thoughts or comments on this ? Link to comment Share on other sites More sharing options...
Darryl&Rita Posted January 17, 2017 Report Share Posted January 17, 2017 How are you adjusting them? I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
Chief 62 Posted January 17, 2017 Report Share Posted January 17, 2017 A weak spring in the lifter will allow it to continue to tick even with adjustment. It may have some dirt/debris caught in it. Try adding a quart of automatic transmission fluid to the oil and run it a few hundred miles and see if it will clear out. ATF is a great clearer and won't harm anything. Gary & Penny 2015 Lance 1172 2005 Chevy 3500 2013 Bass Tracker 190 Pro Team Link to comment Share on other sites More sharing options...
gjhunter01 Posted January 17, 2017 Report Share Posted January 17, 2017 Can you get a mechanics stethoscope to determine which lifter it is and/or isolate the area of the noise? How about another noise cause such as timing chain or rod pin? Greg Link to comment Share on other sites More sharing options...
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