Vapor Lock 101 ?

[Larry Brumfield]

Originally Posted by old1928fordguy

Today in a friends car here in Denver ,air temp 101 degrees,5280 feet,same stock up draft Zenith,car started to run rough,opend GAV and it helped a little.Enough to get it off the road,We cracked the gas line and air came out.Gas could be heard boiling in the carb.After relieving the air lock and a cold wet rag on the carb it ran fine until it heated back up and the same happened again.Took it out for a ride tonight at 80 degrees no problem and ran great for 25 miles.Call it what you like but it seems like vapor lock to me.Phil

If that's the case then ALL Model A's in the Denver area won't run on a hot day.

If global warming gets any worse you'll have to find a new business.


Larry B.