11-22-2013, 05:40 PM #1
More fuel pressure regulator questions
Okay, before I installed the regulator, my fuel pressure was rock solid at 44 psi under wot.
Now with the R&D regulator I set it at 58 at idle non rising rate and before I get on plane at about 3k rpm it's at 48, then as soon as I go wot it drops to 20 maybe less.
Any ideas? R&D is closed on Friday. I would have asked them. What do you guys think?
Even without much load it doesn't hold pressure.
Again, with the stock reg. it never went below 44. So to me it doesn't seem like the pump. Seems like the reg. I opened it up and there isn't much to it, a pintle, a spring and a diaphragm.
11-22-2013, 05:59 PM #2
- Join Date
- May 2010
Sounds like your leaking pressure in the tank somewhere. Where any of the fuel lines modified in the tank that maybe has a loose clamp?...is the pump seated correctly in the black container?. It can't be to many things.
Regulator is probably fine, I went through the same thing...nothing to them.
11-22-2013, 06:21 PM #3
11-22-2013, 06:47 PM #4
11-22-2013, 07:56 PM #5
11-23-2013, 09:26 AM #6
11-23-2013, 10:47 AM #7
11-23-2013, 11:22 AM #8
11-23-2013, 11:34 AM #9
How old is the fuel pump???I had this type of situation with my wifes ski...Come to find out the fuel pump went bad..It was weak and couldnt push fuel at the higher RPMS..This was an OEM pump too..
11-23-2013, 12:30 PM #10
fuel pumps have a check valve that will leak back through if it goes bad. Cheap Walboros are famous for this crap. How are you measuring?
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