Zenith 40 tin diaphragm leaks

[924CarreraGTP]

I got my 1970 911 running. It idles but not that well but runs good. I noticed the diaphrams under the throttle cams were leaking. Can I replace these without having to retune the carbs? Can I replace these without having to remove the carbs? Nothing else looks to be leaking so why disturb it? The car runs good.
Thanks,
Justin

[VFR750]

Do you mean the 3 acceleration pumps or the enrichment system. Either way, you could replace them with out a full teardown. You would have to check the acceleration pump operation after you reinstall the linage. I think cleaning the gasket sealing surface will be hard to do with the carbs installed.

[924CarreraGTP]

I think I can do it. It's the accelerator pumps. I have some special tools I made for cleaning gaskets out of tight spots. It just sucks that I have to spend $60+ on a complete rebuild kit to replace only the diaphrams.

[ratpiper71T]

I think I can do it. It's the accelerator pumps. I have some special tools I made for cleaning gaskets out of tight spots. It just sucks that I have to spend $60+ on a complete rebuild kit to replace only the diaphrams.

I would rebuild the whole carb(s) if I were you. You're probably sick of spending money and time to try and get it running, but noting from your other posts that I been sitting a while- no telling what buildup and crap is stuck in the passages. You'll probably have to block off the aux. Enrichment system. Here's some links:

Zenith Carbs

Zenith 40TIN service and design review

Zeniths on Stock 2.7L