Yesterday afternoon I experienced what I assume was vapor lock.
The wife and I drove approximately 25 miles on the freeway (60-65 mph),
and as soon as we got off on the side streets and slowed down the engine
quit. After it sat for a couple of minutes it fired back up, then would
die again after a couple of minutes. We finally got to where we were
going, it sat a couple of hours, and we were able to drive home with no
problem. This morning after driving approximately 5 miles it did it
again.
The temps yesterday afternoon were in the mid to upper 90's, with the
humidity being somewhere in the 65-70% range. Last night on the return
trip the temps were in the low 80's, as they were this morning when it
happened again. I'm running a stock 216, and the truck has just recently
been completely (frame off) restored. The fuel tank was vatted and
sealed, I have 2 inline filters, and the fuel lines are run where they
were originally.
What do ya'll think; does this sound like vapor lock, and if so, is
there a sure fire way to prevent it from happening again? My neighbor
tells me that when it gets hot (a constant here in Texas), that vapor
lock pretty much becomes a common occurrence on these old trucks when
speed is mixed with heat and humidity. Does that sound right?
Thanks for any help.
Brad Newman
49 3100 Deluxe
24 1 ton
Coppell, Texas
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