[Supras] Fuel pump system priming and pump resistor

berniek at technicaldevelop.com berniek at technicaldevelop.com
Mon Sep 3 16:20:42 CDT 2007


When pulling the engine out of my '91 turbo, I happened to turn on the 
ignition switch and the fuel pump ran, flooding the floor with fuel.  
Now with the new engine in place (also have Walbro pump in tank) that 
does not happen.  Every other FI car I've had has a "prime" mode where 
the pump will run for a few seconds with the ignition on but not in the 
start position.  Shorting +B and FP in the diagnostic connector does run 
the pump, so the Walbro installation is OK.  There is voltage to the 
pump when running the starter (measured at the FP connection.  Tank is 
empty for the moment so I can't run the pump for too long.  Still need 
to get upper intake, fuel rail and intercooler piping in place. 


Also:  What is the recommendation about the fuel pump resistor with the 
Walbro pump?  Should it be removed or replaced with a resistor of lower 
resistance?


Thanks, as always.


BernieK. 







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