No, front left by cyls 1 and 2 is most likely one of the hoses in the small coolant circuit which runs from the rear up to the TB, out of the TB to the ISCV, from the ISCV back into the block via a port on the underside of the intake between cyls 1 and 2. If there is no sign of coolant on tp of the lower plenum then inspect the hose running from the ISCV to the return port and then failing that replace the lower plenum's gasket.
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