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LS1 engine was surging, even dying sometimes at a stop and giving me the SES light. Turned out to be a vaccum leak in a rubber hose going to/from the manifold. Solved it by shrinking a piece of rubber over the crack. Now I need to find a new piece, but have no luck finding one. Any suggestions? It's the rubber hose circled in yellow.
When the manifold is off, new intake manifold gaskets are worth considering. After ~18 years mine were just about toast. Definitely wouldn't have wanted my car to be out in a heavy rain etc.
After reading the how-to about this upgrade, I see that I have to reuse this very part of the hose even with an LS6 valley cover.
I can only find a whole line assembly which is almost as expensive as a cover itself. Anyone knows a source where I can find this seperate part of the hose assembly?
After reading the how-to about this upgrade, I see that I have to reuse this very part of the hose even with an LS6 valley cover.
I can only find a whole line assembly which is almost as expensive as a cover itself. Anyone knows a source where I can find this seperate part of the hose assembly?
With the original LS6 Valley Cover you did.
You don't reuse that with the 04-05 LS6 Valley Cover (p/n 12577927) has its own PCV valve, and you use the LS6 hose (p/n 12594779) to hook up to that port on the intake. Cap the rear opposite side valve cover PCV connection with (p/n 12568011)
I just did all of this as part of my top end rebuild on my 99 LS1.
the old style Valley cover is NLA....and a good time to check your knock sensors and KS wiring harness....as well as the oil pressure sender with the mani off
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