Smoking in the Can

The next vacuum leak revealed by my DIY smoke machine was at the valve of the fuel vapor canister.

A closer inspection revealed a crack in the valve cap (see below photo just at the base of the nipple).

Since the crack in the nipple was only in the top of the valve, I was able to use my plastic welder with a fiber-flex rod to seal the leak.

Once the weld cooled I used my Dremel to smooth out the weld and make it look good.

Since this air line was in-line with the vacuum advance solenoid, I not only sealed up some unmetered air but I also let the ignition advance get the vacuum it needs to work properly!