most likely chain tensioner. Might need a replacement or make sure it’s popped out all the way
Yes. I’m speaking from experience because of it happening to meNo.... SOME loose and tight spots are normal because when chains are installed they are not PRE stretched. However thats with a grain if salt, what is being displayed is excessive. So we move on from there.
If i take the chain off the crank.... and turn the cams at the same pace it will stay tight between cams aslong as it doesnt skip a tooth... unless theyre is excessive stretch in the chain, or the cam gear actuator isnt functioning properly.
The likelyhood of a tens failing its very unlikely, its a ratcheting mechanism. Its rides aginst the chain and it clicks the next tooth on the mechanism as the chain stretches an keeps CONSTANT consistant pressure. If it feels any give it clicks the next tooth.
If the tens is maxed out then ITS NOT a failed tens its a STRETCHED chain.
2000 GTS Turbo