After some hard towing my 2004, E150 4.6L (143k) has developed a fairly loud ticking sound. It seems to be loudest behind the engine or in the transmission bell housing.

So far I’ve replaced the flex plate but am having a hard time justifying putting any more money into exploratory efforts, trying to fix this noise.

A few suggested issues have been a possible cracked flex plate which turned out to not be the issue, a broken transmission pump or even a failed valve lifter at the back of the motor.

One suggestion was to try replacing a quart of engine oil with ATF with hopes of cleaning out and loosening up any stuck lifters.

Any thoughts on this would be greatly appreciated!

https://youtube.com/shorts/8EozVqPR8Z8?feature=share

**** sorry about double posting on this issue, I am new to the forum, and couldn’t quite figure out how to reply to my other thread….. or post, the YouTube video of my ticking noise.

 

Sounds like rod knock to me.