Fuel Pressure bleed down. KOEO

[Toby_Goodmk]

Key on Engine off, get instant pressure to 50psi. QUICKLY drops off. I have a brand new accufab regulator, and brand new Racetronix fuel lines. I noticed it today while working with Cal at Hartline while doing the initial tune for my FAST. We KOEO....set a couple parameters, we went to start and of course since I had my pressure bleed off it didnt start up. Pressure is 43 constant as long as running. I do not have a puff of black at next start up. This leads me to believe injectors are ok, and Full throttle just cleaned them. SO, Fuel pump???

 

[Ktbregal]

Interesting Toby, maybe the rubber line on the sending unit is leaking.

 

[Toby_Goodmk]

had it out, did a visual, nothing there....appears

 

[Ktbregal]

Maybe next time you have it out, put it in a small bucket of fuel and prime it up. Maybe pull the injectors and prime them up.

 

[Ktbregal]

If you do put the sending unit in se gas, prime it up and pull it out of the gas. Maybe the pump is bleeding back. Just thinking outside the box. Good luck Toby.