How to fix the timing chain tensioner noise with an external oil pressure supply and not a getto adjustment bolt.
Please verify thay your timing chain guides are in one piece first as this is a common failed part on these engines!
Here is a link to affliction550's video of the same noise it had before [ Ссылка ]
Don't try this unless you want to prematurely destroy you timing chain guides [ Ссылка ]. The whole reason the timing chain tensioners are pressurized with oil pressure is so the timing chain can relax at higher RPMs. Timing chains won't stretch when needed like a belt so they need a way to relive the extra pressure. This is the reason most modern timing belt engines have spring loaded tensioners as well to increase belt life and durability.
Here is a link to the Cloyes timing chain installation video for the 4.0L SOHC ford. At 11:00 min he discusses the oil port for the tensioner [ Ссылка ]
After studying the block and head when it was apart the front chain tensioner is the last thing supplied in the oil galley system of these engines. Be sure you have good cassettes and guide components 1st! The low oil pressure at this port is most likely caused by excessive bearing clearances and it being last in line. Also if the timing chains have been done before this, the tech doing it may have left the o-ring off the back of the driver's side primary chain guide. This seals the main galley otw to the pressure switch and if leaking it just drains back into the sump and you'll never know. This issue drops the oil pressure drastically before getting to the driver's head. My rig here just bypasses to it so it's not last anymore.
