I received the replacement timing chain tensioner today, so I installed it and pulled the release pin and again the plunger didn't extend. In desperation, I grabbed a ball peen hammer and struck the tensioner body near the plunger. On about the third successively harder blow, the plunger finally broke free and popped out.
Now with both new chain tensioners installed, I lubed and placed the o-ring on the oil inlet of each tensioner, then installed the chain box covers. I also re-installed the oil temp sensor for the EFI system into the chain box cover for the 1,2,3 bank. Lastly, I installed the oil supply lines to the chain tensioners.
