I'm no longer fuming

Now that it's getting cold outside, it's time to break out the garage heaters.  One conundrum faced when wrenching in cold weather is the need to run a car while working on it while keeping the exhaust fumes minimal.  This issue becomes even more prevalent when a classic car is involved as they don't have modern emission equipment installed.  I came up with a cheap solution to my problem: a DIY exhaust evacuation system.  The parts list is simple: 25 feet of 4" flexible foil ducting and a 4" duct fan, all obtained from Amazon.com.

I secured one end of the duct to the ridge vent in the garage.  I then ran it down the rafters towards the left rear post on the lift.

I then ran the duct down the lift post and secured it with an adhesive zip-tie mount and zip ties.

After adding the fan and a short section of duct to the upstream side of the fan, it was ready for testing.  I used a jack stand to hold the fan in place while I slid the short section of duct onto the tailpipe.  I plugged-in the fan and started up the car.  After letting the car warm up (to confirm that my heater control valve was leaking), I can say that there was only the faintest of exhaust smells in the garage; without the duct the smell would have been so bad I would have had to leave the garage.  Success!