[6pack] Fuel percolation

[Sally or Dick Taylor]

Eric---It could be as you thought - fuel percolation. Since a running engine is always replacing the fuel in the carburetor/lines with (cooler) that is in the tank. I'll offer another possibility here.
First, make sure that the fuel line is not up against any hot parts of the engine.
Second, tho less likely, is restricted "aftermarket" air filters

Finally, it could be just the opposite of fuel percolating - that being the intake manifold is cold from extended driving, when receiving no warming from the water going thru the intake manifold. Fuel condensing here will cause the same symptoms as starting a cold engine, that being you might need to Choke it for starting. If this situation should come up again, feel the intake manifold to be sure it is warm to touch. If not, there could be blockage in the line somewhere. (Usually the return pipe).

Dick
 


-----Original Message-----
From: Erik Sulcs
Sent: Tuesday, July 22, 2008 8:51 AM
To: 6pack at autox.team.net
Subject: [6pack] Fuel percolation

Hello Listers,

Last weekend I drove from NYC to Wash. DC and back.  It was over 95 degrees
on both Sat. and Sunday.  My 1974 car has the original Stromberg carbs and a
pair of aftermarket air filters.  The car drove exceptionally well except
for after driving for a few hours, I noticed that it almost wanted to
stall-out when I pulled over for gas.  I would have to keep blipping the
throttle to keep the revs up or it would have died.  Then, the problem would
have been starting it, as it would only crank and would have a very
difficult time starting.  If I'm not mistaken this is symptomatic of, "fuel
percolation".  Can someone explain exactly what that is and how can I avoid
it on our cars?
I've seen heat shields advertised by the big 3.  Does anyone have experience
with these?  Are they effective?
I almost became, "that guy" that stalled-out in the Lincoln Tunnel late
Sunday afternoon... not a good way to end the trip w/ my Mrs. to-be...
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