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62chevy302 · 11-13-2018, 12:29 AM

Yes that is the intake tube. If you dont have the purge valve connected to the ecm it will not draw vacuum. If you remove the valve you will need to plug the vacuum port.

11-13-2018, 12:29 AM	#5
62chevy302 hillbilly Join Date: Apr 2007 Location: hampton,tn Posts: 459	Re: Is this needed? LS swap evap valve Yes that is the intake tube. If you dont have the purge valve connected to the ecm it will not draw vacuum. If you remove the valve you will need to plug the vacuum port. __________________ -1962 C-10