[TR] Apparent vapor lock

[Chip19474 at aol.com]

David,
 
When it runs rough during that "short time restart", do you observe the  
exhaust color running "rich"?  I've seen conditions where the float level  is just 
high enough and the float needles are just sticky enough to allow fuel  to 
get past the float needles after the motor is turned off and collect in  the 
intake manifold. This will only happen for a short time until the  residual fuel 
pressure from the fuel pump is drawn down.  So, after an hour  of engine off, 
the fuel evaporates but after a few minutes the fuel is there and  rich enough 
to load the engine and cause rough running.
 
If the engine isn't running rich during this "short time restart" then we  
have to think of another cause.  If the engine starts well you'd think that  
there's enough fuel in the bowls so fuel percolation or low fuel levels in the  
bowls don't seem to be the culprit.  During the "short time restart"  running 
(when it's running rough) does pulling the choke out make it run any  
differently?
 
Chip Krout
Delaware Valley Triumphs, Ltd.
Skippack, PA
1976 TR6  CF57822U



In a message dated 11/9/2008 11:19:00 A.M. Eastern Standard Time,  
DLylis at aol.com writes:

It  starts well, but goes  through periods 
of rough running, almost like  a plug wire is disconnected (its  not that).  
I 
can get it to  clear, but intermittently returns to rough   running.


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