Is this a lifter tap?
(2012-01-22 15:15:19) 1. Says: 2000 F150 xlt. 4.6L 2V. The engine sounds good at idle and hile cruising, but under acceleration (especially from a stop) I can hear an obvious tapping. If it IS a lifter tapping, why would it only be audible during acceleration?Any suggestiions / advise on fixing the issue also appreciated2. Says: If it was a lifter, it would not matter if the engine was under a load or not.
Firstly, I would be suspect of an exhaust leak.3. Says: No, this is a timing chain tensioner that has collapsed! This is a common issue with the Ford Modular motors of this vintage! This noise is most often caused by a restricted oil feed orfice (the main oil feed is on the passenger side, the very rear camshaft bearing cap! Tag: Is this a lifter tap?
