tigers
[Top] [All Lists]

Re: [Tigers] Vapor lock/fuel percolation

To: awtiger@cox.net, tigers@autox.team.net
Subject: Re: [Tigers] Vapor lock/fuel percolation
From: CoolVT@aol.com
Date: Thu, 29 Sep 2011 19:46:35 -0400 (EDT)
Andy,
If you think that's the problem you can get a heat  spacer that goes under 
the carb for about $10 through Summit.  I was  getting the problem when I 
shut down....had a hard time restarting.  The  spacer solved the problem 100%.
Mark
 
 
In a message dated 9/29/2011 7:09:35 P.M. Eastern Daylight Time,  
awtiger@cox.net writes:

Guys:

After all the stuff I've done to the Tiger  ignition-wise to get it to quit 
stalling, I'm finding myself starting to  consider other possibilities, 
such 
as vapor lock and fuel  percolation.  To make a long story short, the car 
is 
leaving me on  the side of the road when it's up to operating temp and warm 
 
outside.  It caughs and sputters and won't take any throttle at all  at low 
rpm.  When I coast off to the side of the road and take off  the air 
cleaner, 
I'm seeing what I would consider to be a large amount of  vapor coming from 
the overflow tube (Holley 465 4 bbl).  It also  periodically spits fuel 
from 
the center squirter down the throat of the  carb.  From what I've read on 
the 
'Net, this sounds like a classic  case of fuel percolation.  One other 
thing...the car will always  start back up and run, but will not take any 
throttle or any low rpm  load.  Also, when I manually open the throttle, I 
am 
rewarded with  fuel squirts (at least I know it's got fuel in the carb at 
that  point).

What I can't figure out is, if it is percolation, what has  changed to make 
it do that?  I've made no changes to the fuel system  of the car.  In fact, 
until the recent ignition tune-up, I'd made no  changes to the car for 
many, 
many years.  It's never done this  before.  The car is also running at the 
same temp it's always run  at.  Could the gas we're getting nowadays be 
responsible for  this?  I always run 91-octane premium (real gas, no 
ethanol) 
and have  for years.  I've heard there is such a thing as "winter mix gas" 
and  "summer mix gas" and that each have a different temperature at which 
they  volatize.  Due to some serious drains on my time lately, the last 
time  
I filled the car up with fuel was in May.  Could I just simply have a  load 
of "winter gas" that volatizes at a lower temperature?

Any  suggestions???  Please somebody send me to school here...I'm beginning 
 
to feel really stupid.

Andy Walker
Edmond,  OK
B382001600LRXFE
TAC  #740
_______________________________________________

tigers@autox.team.net

Donate:  http://www.team.net/donate.html
Archive:  http://www.team.net/archive
Forums:  http://www.team.net/forums
Unsubscribe:  http://autox.team.net/mailman/options/tigers/coolvt@aol.com
_______________________________________________

tigers@autox.team.net

Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums


<Prev in Thread] Current Thread [Next in Thread>