[HWYSTR455]

It's not difficult to run a line from a gas can to the fuel pump, and it would eliminate any question of the quality of fuel. You HAVE to eliminate ANY possible cause, it's trial and error, so you have to do ALL the steps to have countable results.

Think about it, you put the new tank in when this escapade first began, almost 2 years ago. THAT gas is still in there, and it has sat for that almost 2 years. Adding gas to bad gas makes all the gas in the tank bad. Did you drain the existing gas out of the tank before you added 'new' gas?

Do I think it's the gas? Not really, but I admit it is a possible cause that hasn't been addressed yet.

If any one of the potential causes that were corrected did not fix the issue doesn't mean that there wasn't any issue with the corrections, like the initial timing and/or the rockers. And don't dismiss that the knock could be caused by a combo if issues. It all needs to be right.

The plugs looked a little hot to me, and maybe a little rich. Maybe post a pic or two of those.

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