I found out fuel pressure regulator had it's vacuum line disconnected, what's the chances of it being damaged?

LucksMyName

New Member
Aug 17, 2019
3
0
1
20
arizona
Recently i found out the vacuum line to the fuel pressure regulator wasn't connected to it at all, it was connected randomly on the intake manifold. I'm wondering if this damaged the fuel regulator pressure sensor? I been having to turn my car on twice as first time I crank it up it starts up and dies on me. Then I crank it again and it starts up .
 
  • Sponsors(?)


KRUISR

5 Year Member
Apr 16, 2015
331
116
63
50
Vacuum line off pressure regulator will not damage the regulator. It just won't adjust the fuel pressure.
 

wmburns

SN Certified Technician
Aug 14, 2009
5,838
505
194
Houston Texas
Without a working intake vacuum referenced fuel pressure regulator the AF ratio will be chronically rich at idle. This is needed.

I been having to turn my car on twice as first time I crank it up it starts up and dies on me. Then I crank it again and it starts up .
Turn the key on/pause/off several times WITHOUT cranking. Does this improve starting? If so, suspect fuel pressure leak down as the problem.