Differenzial fuel pressure sensor on position p2

Jeff, where did you get the 6mm stand-off?

Hi Richard, 

Sorry for the delay, I did not check in this week.  I bought the stand-off at McMaster-Carr, specifically their part number 93655A254, which has a 14mm long stud, or 93655A255, which has a 16mm long stud.  The 14mm was the best length, and both of these part numbers are for stainless steel.  I also bought some in aluminum which was easier to drill - not as strong - but would work just fine.  That being said, I have several extra and I even have one in stainless steel with the hole already milled.  I'd be happy to send it to you.  

Jeff, send me an email, r.boslaugh@outdrs.net. Thanks Richard

Here is copy of the latest installation manual page.  Clearly they say the pressure is a checked and has to be with reference to the manifold pressure.  It is there way of saying you have to measure the delta of the 2 and maintain your pressure relative to the manifold fluctuations that occur.  (pressure differential) 

A note, the fuel pressure control is a mechanical device, as such it has a number of small bits and whenever we see this design, (common automotive parts) there is always over and undershoot of pressures.  The extent of these over and under readings normally will not affect your engine.  The instrument supplier, if they are going to measure this , needs to be wary and not set his alarms too narrow.  

Cleaver technicians have learned that the first signs of a contaminated filter is higher pressures.  When a person says he cant turn on both fuel pumps or fuel pressure is too high this is the first thing to check.  look for contaminated filters or problems with your fuel return to tank.  I have seen rubber from the inside of fuel lines also contaminate the fuel pressure regulator, don't forget to check this if all else fails.  Its not hard to take apart and clean.

Cheer