RE: [DML] Fuel distributer o-ring

["John Hervey" <john@xxxxxxxxxxxxxxxx>]

Dave, 
Now you have changed the primary pressure regulator ( PPS ) position in the
distributor by shimming it out with another O ring by 0.054 ths.
This means you have lowered the fuel pressure in the fuel system and are
letting more fuel go back to the tank because it takes the spring tension
off the PPS spring loaded plunger.
John Hervey



-----Original Message-----
From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of
Dave Sontos
Sent: Sunday, August 08, 2010 1:27 PM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: [DML] Fuel distributer o-ring

I was also plagued by the broken o-ring in the fuel distributer. After close
examination of the ports in the distributer where the o-ring sits I found
the bolt for the frequency valve line. I removed the bolt and added two
copper washers to the bolt so that it would not penetrate as deeply into the
distributer. I have been running now for three weeks without any hot start
problems. My theory is that the bolt may have been the culprit for damaging
the o-ring because the copper washers may have been flattened over time and
repeated use and allowed the bolt to enter into the path of the piston and
o-ring. Give it a try.

Dave Sontos



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