Not what I expected. Put the new Iridium plugs in, put on the new serpentine belt, reassembled everything needed to run… and… it not only smells rich but it seems to run rougher than before.
Is it possible that timing was adjusted to compensate for worn plugs?
And here are the old plugs - with way more than .044 gap on each one.
Going around the block to see how it feels - and it definitely runs rough. Feels like it is hesitating.
I’m thinking that the wires may have been damaged during the pulling to remove them.
The new plugs were not quite pre-gapped the same - I did check them all and adjusted as necessary - so there is a possibility of a DOA plug, also.