stock87 "The 22R fuel pump can be VERY noisy. I was absolutely shocked when I replaced mine recently at how much quieter the new one is. Mine still pumped just fine, although the one way valve was shot."

stock87....Do tell, was it a ticking noise?

I'm fairly certain ,like about 90%, it's not an exhaust leak. It's always the most likely and easiest to explain. I'll go over the exhaust system again, this time without the exhaust manifold heatshield in the way.

Anyone else have any ideas?