That is a picture of a throttle body.
Ig,
Recently scrapped an old chevy that i had revived.
It had sat for 2-3 years as well and would not start unless gas was
poured to it.
I disconnected the return line from the throttle body and a bunch of
yellow crap came out while cranking over.
While this was happening truck started.
So i shut it off and hooked return line back up.
Ran fine from then on.
Hood blew up in my face on highway so i scrapped it....
Good luck.
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