Low fuel pressure

[bhargrave]

My fuel pressure has dropped to high 30's psi. Could it be I need to clean my fuel filter?

 

[John H]

Possible but probably not. Whatever it is you need to rectify it immediately. Fueling is open loop.

Test if the fuel pressure stays at 30psi while bleeding fuel from the outlet side of the regulator. If it's a dying pump or filter issue it will drop.

If it's just a solid 30 psi it's probably just fatigue on the regulator spring and you just need to adjust it.

 

[bhargrave]

Now it has jumped back to 42psi. It dropped yesterday while I was burping the radiator.

On a side note, now one of the radiator hoses is leaking at the hose clamp. Maybe the air bubbles caused some movement?