Topic: Do carb sync hoses need to be fuel-proof?

[Tugboat]

Borrowed Spanner1's carb sync gauges but his hoses are starting to split at the end. Does the replacement hose need to be fuel-proof or can I just use regular vacuum hose?

[Roach Carver]

I would say regular clear/vinyl hose should be fine. You are checking vacuum. I don't think fuel will enter those lines. even if it did, for the limited exposure time I doubt it would matter.  ****** Disclaimer, I have never vac-synced my carbs**** I only replied since no one else has so heres a bump for you and hopefully we will get confirmation from another member that I am brilliant and correct.

[70CB750]

I used clear vinyl hoses for my synchro tool, but later went to rubber - it stays softer longer and is easier to put on and off carb adapters.

[iron_worker]

Vacuum hose should be fine.

IW

[Tugboat]

That's what I thought; but since they belong to someone else I wanted to make sure. Thanks y'all!

[BobbyR]

Unless something is really wrong the gas vapors are going the other way. Vinyl is probably not apt to seal as well as rubber. That reminds me I have to replace mine. Thanks for the reminder!

[Tugboat]

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