But this is what happens when you go for a drive and you hear a noise that you can't quite put you finger one... I ordered a new air hose and it did not come Friday as I was hoping. I knew I needed to get access to the rear area of the shroud so I completely undressed the engine, this time top down instead of removing the engine. The cooling fan was intermittently rubbing against a shroud screw and I could not get to it. So I removed the alternator, then after seeing another "future" issue, I pulled the DTM shroud to adjust a vane, cleaned it and left it out to install the new air house when it comes. Then I realized that the carb gasket had a tear in it and that was probably causing the backfiring, so I pulled the carbs and cleaned them. I am also going to add a vacuum line to the carb manifolds while I am at it. I drove the car for about 15 minutes on Saturday, then started to undress. Now I just have to wait for the parts to arrive and put it all back together.
And the kicker... still couldn't wire the horn.
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