Jump to content
Ultimate Subaru Message Board

Fuel pressure jumping


Recommended Posts

Hey,

 

prep'n for a Weber swap in the next week or so, so I put a fuel pressure gauge inline to the carburetor just to see where it sits.

 

it pulses quickly between a little above 2psi and 3 psi.

 

question 1) is the pulsing a sign of fuel system problems? It is a cheap gauge so I wouldnt rule out some slight inaccuracy.

 

question 2) is the spike to 3 psi what I should consider the fuel pressure? or the low spot? Im guessing that since it pulses very fast it wont make a difference since the bowl will still have fuel, and im not going over the max pressure required.

 

question 3) is there anything I can do to make this more stable. My initial plan was to run a return line filter, so I can restrict the return a bit to try to get the pressure up to 3.5ish. I can also run dead ended since the pressure isnt over the max.

 

I just got the Weber Haynes manual so ill check it out tonight, any advice would help though.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...