fuel pressure changes...

rod · 10-27-2011, 06:16 PM

i race my '56 Nomad at night races [at las vegas] and never get to see the fuel pressure gauge [dark]. last wed. night, i hit the shift just right to have the track lighting hit the outside gauge. it happened very quick, i watched the pressure drop from 8 to about 4 and then back to 8.
i had just cleaned the Holley blue pump vanes and internal screen, replaced the filter, and just put a new regulator diaphragm in. all the line is aluminuuuuuum or blue flex.
i don't know if this has been an on going problem, if it is new or just a fluke happening.
i wonder if it might have been the toggle switch doing something weird.

thoughts?
thanks rod in AZ

10-27-2011, 06:16 PM	#1
rod Member Join Date: Dec 2009 Location: Kingman, NW AZ. in the middle of the longest stretch of Route 66 Posts: 314 Likes: 0 Liked 20 Times in 15 Posts	fuel pressure changes... i race my '56 Nomad at night races [at las vegas] and never get to see the fuel pressure gauge [dark]. last wed. night, i hit the shift just right to have the track lighting hit the outside gauge. it happened very quick, i watched the pressure drop from 8 to about 4 and then back to 8. i had just cleaned the Holley blue pump vanes and internal screen, replaced the filter, and just put a new regulator diaphragm in. all the line is aluminuuuuuum or blue flex. i don't know if this has been an on going problem, if it is new or just a fluke happening. i wonder if it might have been the toggle switch doing something weird. thoughts? thanks rod in AZ