Making blind plugs for carb rubbers

[Brian]

I rode 200 miles home once with a folded square of duct tape over one of my vacuum ports - is there nothing duct tape can't fix ? 

[steptoe]

another take on an old prob Melb,    should work as well as every one elses take,,

was in a pickle myself a while ago,, used a vac line and jammed a screw in the end,,,,,,,,,,,,,,,,,,,,,and forgot about it for ages

[Fred]

Mine are still holding up after 2yrs.

I used an inch and a half of vacuum hose and drove a golf tee into it and then trimmed it off neat.

[Stout]

This is untested, as my caps are still OK (just) but I'd be inclined to use some small bore vac line and the little black plastic plugs used for irrigation line.

[melbxs]

Two of my blind plugs on the carb rubbers were goosed and I find that the small ones from Supercheap Auto etc. don't stay on 100% when there's a bit of heat.

After seeing a home-made job that Patrick in NZ had made, I made up a set myself.

Cut 25mm lengths of 4mm fuel pipe and squeeze about 6mm of silicon in one end. If you twist the silicon tube as you go you get a good bind on the sides of the tube and no air bubbles.

Next day trim the end off the silicon to neaten up the plug and away you go.