<VV> Fuel issues! Smoking Gun?

[Michael Kovacs]

 Petronix requires 12 volts. My petronix1 would fail to deliver good spark when 
it got hot, resulting in no acceleration and hard starting, low RPM. Changing 
coil seemed to work for a while but the petronix was cooled down by then. Now 
using more expensive Petronix2 and hot coil and no problems for years. I carry a 
spare distributor with points for emergencies, but it should not be run with 
straight 12volts. Should use a resistor or cook stuff in the long run.

 If you have a points/condenser setup, try changing it first before anything 
else?

 now running 4 vairsLM with this setup.

 MIKE KOVACS




________________________________
From: "kenharri at comcast.net" <kenharri at comcast.net>
To: Michael Kovacs <kovacsmj at sbcglobal.net>
Sent: Tue, June 14, 2011 10:20:39 AM
Subject: Re: <VV> Fuel issues!  Smoking Gun?


Hi Mike,
 
I have a Petronics 1.  I suspected it and recently changed the coil with a Crane 
Fireball as Clark's recommends.  There did not seem to be much of a change.  I 
did install the resistor as was recommended but have considered bypassing it to 
see if there was any change in behavior.  

 
Regarding the fuel pump, did you receive the photos?  They may have been 
filtered out.
 
If you would, please tell me about your coil issue.  
 
Thanks!
 
Kent Harrington

----- Original Message -----
From: "Michael Kovacs" <kovacsmj at sbcglobal.net>
To: kenharri at comcast.net
Sent: Tuesday, June 14, 2011 9:53:06 AM
Subject: Re: <VV> Fuel issues!  Smoking Gun?

Try the coil or if you have a petronix 1. Sounds just like my problem with a 
Petronix 1

 MIKE KOVACS



----- Original Message ----
From: "kenharri at comcast.net" <kenharri at comcast.net>
To: Virtual Vairs <virtualvairs at corvair.org>
Sent: Mon, June 13, 2011 10:55:11 PM
Subject: <VV> Fuel issues!  Smoking Gun?



Hello, I have been having issues with my FC.  She runs well most of the time but 

has always (in the year I have had her on the road) stumbled under hard 
acceleration. Lately she just does not want to do more than a couple thousand 
RPM.  Yesterday it turned into a few hundred RPM, then nothing.  All the usual 
tricks would not work.  The best I could get her to do is run at 2000 RPM for 15 

seconds then quit.  I hooked up a clean 2 gallon fuel source to the fuel pump 
input line, no change. I replaced the carbs with a known good pair, no change.  
I replaced the fuel pump and also had no change.  Towed her home.  




I opened up the carbs and found them pretty clean with no noticable defects.  I 
opened up the 1 year old fuel pump and found both valves installed with the same 

orientation (see attached photos) with the inlet valve cocked off to one side.  
I am no fuel pump expert but shouldn't they have an  opposing orientation to 
each other to suck through the inlet side then push through the outlet side ? 




You fuel system experts out there, where are you? 



Thanks for your input!