Hello I am looking for the min/max/ norm specs for depth of the diaphragm. I am experiencing some HPFP wierdness. Current depth reading is 22.80 mm.

Thank you!

 

Troyegly I checked my Bentley manual and I found no specs for the HPFP. The only thing in the Bentley manual has is how to remove and replace the HPFP. To be honest for the cost of the Bentley manual I was very disappointed since there isn't any detailed component overhaul information. I have the factory GM service manuals for my 1991 GMC pickup and the GM manuals have the overhaul procedures for every major component.

 

Gearhead thank you for looking. I was blessed to have someone send me the spec sheet. Max is 26mm. That is disappointing about the Bentley manual.