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jumping on this - I have a new to me 2001 chev express 8L - motorhome
replacing the same vacuum lines and check valve - question is the connection from the cab through the firewall has two connectors - cant for the life of me find where the 2nd one goes? Should there be a T in the line from the resevoir tank by the battery?
Last edited by mountainmanjoe; August 9th, 2024 at 1:41 PM.
Sorry for the late reply. I replaced the 3-way check valve with no effect on the issue. This past week while changing spark plugs, I checked the new vacuum hoses...all good. I did notice this valve atop the intake manifold with the red seal. I'm able to pull it out and it will not retract on its own. What is it??
Mystery Valve
This is the vacuum hose attached to the intake manifold, routed to the engine compartment: Vacuum Hose
July 19th, 2024, 8:24 AM
