4KSQ:Fuel System Woes (Was 4KSQ won't start)

[MENGEBR.SVC@pc.Trimble.COM (Mark Engebretson)]

Last week I posted a message regarding my 1985 4KSQ that suddenly died in 
my carport.  It had been running just fine, but one evening it failed to 
start.  The engine turns over, but no bang.  At the time I felt that it 
was a failure in the ignition system.  A number of you responded with 
ideas and information that led me through the trouble shooting of the 
ignition system.  Now I have found that the ignition system is indeed 
intact, and that the problem must be somewhere in the fuel system.

Has anyone out there had experience troubleshooting the fuel system on 
the 4K?  I can hear the fuel pump run, and I can smell gas.  I have 
checked all of the fuses in the box and they all seem fine.  Any ideas?  

Could it be as simple as a clogged fuel filter?  I would expect a clogged 
filter to result in a progressive loss in performance,  not a sudden 
failure.

All replies are deeply appreciated.  Thanks to all the cyber mechanics 
who promptly responded to my last query.

___________________________________________
Mark A. Engebretson                  
Trimble Navigation Ltd.
Technical Assist Center (TAC)
Mark_Engebretson@trimble.com
All standard disclaimers apply