stephenm27
Active Member
I am diagnosing a general problem with my starboard engine (intake pop/backfire under increasing load). I have replaced a number of likely culprits over the off-season but to no success so far. I have now also verified there are no error codes in the ECM and live data captured appears "normal" as compared to the port engine. So I'm now moving my focus to failures or conditions that wouldn't be detected by the computer and its sensors.
The question I currently have is, is the dummy fuel regulator on the fuel rail able to cause fuel delivery issues? I noticed tonight that the rubber vacuum line to it was nearly blocked due to being bent at 90 degrees under a wiring harness. This vacuum line originates on the intake manifold and is teed to this dummy regulator as well as the CF3-mounted regulator.
Would starving the dummy of vacuum prevent it from properly adjusting fuel flow under increasing RPM/load?
Thanks in advance for insight/experience...
The question I currently have is, is the dummy fuel regulator on the fuel rail able to cause fuel delivery issues? I noticed tonight that the rubber vacuum line to it was nearly blocked due to being bent at 90 degrees under a wiring harness. This vacuum line originates on the intake manifold and is teed to this dummy regulator as well as the CF3-mounted regulator.
Would starving the dummy of vacuum prevent it from properly adjusting fuel flow under increasing RPM/load?
Thanks in advance for insight/experience...