Thread: Simplifying CIS
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biergekuhlt biergekuhlt is offline
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Join Date: Apr 2025
Location: Michigan
Posts: 21
I've recently gotten my '74 back on the road this year after cleaning up the CIS system (among many other things).

Yes, you can remove the DV, AAR, and AAV. The only "extra" bits I have on my CIS unit are the WUR and CSV as these are required.

Cold starts are fine -- sometimes you may need to start it twice when cold for it to catch and run. No throttle needed. Let it warm up and it's fine. The AAV/AAR are mostly related to cold starts anyways, but they don't stop it from starting. DV is personal preference. I saw all of them as potential vacuum leaks down the road.
Old 09-23-2025, 11:09 AM
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