'32 901 Sedan - Vapor Lock
Posted by Marty or Marston On 2023/9/12 16:10:55
Decided it was time to take the car on a short test drive about town yesterday. It was a hot (90 deg.) summer day in S. Calif. After about 3 miles I headed home and 1 block from home things came to a gasping halt. Got out and checked finding the car had gas in the tank, plenty of spark, but no gas coming out of the carburetor jets. Checked the pump and it was not pumping.
Let the car cool for about 30 minutes and it started right up. Hence the Dreaded Vapor Lock conclusion.
The fuel line runs down the frame from the tank to the engine compartment so it should be OK there. There is about 2 feet of tube inside the engine area before it gets to the pump and it is close to the frame.
The car has a '33 downdraft carb & manifold system. The question I have is there suppose to be a heat shield between the carb and the exhaust manifold. If so can someone out there send me a photo so I can make one that looks correct?
In the interim, I'm going to replace the regular gas with high octane gas that has a higher boiling point.
Attach file:
IMG_5321.JPG (236.46 KB)
Let the car cool for about 30 minutes and it started right up. Hence the Dreaded Vapor Lock conclusion.
The fuel line runs down the frame from the tank to the engine compartment so it should be OK there. There is about 2 feet of tube inside the engine area before it gets to the pump and it is close to the frame.
The car has a '33 downdraft carb & manifold system. The question I have is there suppose to be a heat shield between the carb and the exhaust manifold. If so can someone out there send me a photo so I can make one that looks correct?
In the interim, I'm going to replace the regular gas with high octane gas that has a higher boiling point.
Attach file:
IMG_5321.JPG (236.46 KB)
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