Route internal EC2 with public and private address through private PA to the web

[S.Cox014758]

I have an EC2 instance in a private vpc that I'm trying to route through a security VPC hosting a palo alto firewall. My issue at the moment is getting the traffic to pass through firewall to th IGW on the security VPC. I have been able see traffic trying to get through but is timing out. the Untrusted Interface on the firewall does not have an ENI.

Any assistance would be helpful.

Thanks