My 340 is running hot I think.. I need a sanity check.

DARTH V8R said

Unless you have an e-pump helping, nope nope nopity nope. Put the filter AFTER the mech pump.

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I don't have an issue with fuel pressure it's constant 5-7.. My logic for placing the filter there was cooling
.
Can you elaborate on why You recommend not to have it before the pump?