The next step was to tear down the 2002 and figure out the issue.
.....and clean up some parts while I was in there
Take apart two 7 passenger vehicles and you will have plenty of seating for the next garage party
Gotta love a design where the timing chains are on the back side of the motor so the transmission has to come out to change them.
Long story short, the chains, tensioners and guides were fine
So this part of the job ended up being preventative maintenance since these vans will eventually need chains.
The real issue turned out to be this tiny steel screen jamming the cam adjuster. (Only had to take it apart twice to figure this out
Engine was Sea Foamed and all of the crud inside it is now gone too!