Misfire pinging blowing lots of smoke no power of course
Drive with part throttle for couple miles then it's ok but still has slight pinging under throttle no smoke

Only code lean bank 1

 

When blowing lots of smoke, what color was the smoke ? Blue, black or white ?
What was the last work done on this vehicle?

 

I would say blueish white. Replaced chains guides adjusters 10k ago along with plugs and coils

 

Did you use any RTV that might be able to get into the intake system?

 

I did not

 

I also did a smoke test to check vacuum leaks-none
Checked egr valve on back of intake for soot build up- none
Replaced two upstream and one down stream O2 sensors
Runs fine but it seems the problems starts after idle time.
Does not use coolant but does use some oil.
200k miles it owes me nothing but I like the van but I'm at my wits end

 

The next thing I would suggest is a compression test.

If you don't have a compression tester, you most likely can rent one.
Ignition disabled, and fuel pump fuse removed, throttle held wide open , run the test and note the max pressure on the gauge for each cyl after 2-3 cycles, record the readings and lets see just what we have, can you do this ?

 

Ya I can Ive been avoiding it. I'll try to do it this afternoon thank you for your help

 

When you decide to perform the test,.2024-2025 can you let us know how you make out, thanks.?