Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: dazsir on August 25, 2007, 09:25:07 PM

Title: fuel pressure question
Post by: dazsir on August 25, 2007, 09:25:07 PM
Does the fuel pressure drop over time, or should it stay constant?  When the ignition is "on" but not running I am getting 38psi, but when its turned off it will drop down to about 30psi.

Is this normal?

Thanks for your advice.
Title: fuel pressure question
Post by: antnicuk on August 25, 2007, 09:35:22 PM
it will drop without power to the pump as the fuel leaks back into the tank.

you should measure the pressure with the engine running so the pump has max volts to it.
Title: fuel pressure question
Post by: dazsir on August 26, 2007, 10:02:42 AM
Ok thanks!

Need to find some blanking plugs for the oil injector ports.........
Title: fuel pressure question
Post by: antnicuk on August 26, 2007, 10:22:19 AM
bolts!..............