Quote Originally Posted by mr-natural View Post
I have not found out how to troubleshoot which injector is leaking. Do you have any reference to how to trouble shoot that issue?
My mechanic friend lifted the fuel rail & injectors clear of the intake leaving the injector electrical clips in place, blocked it up so he could see the injector tips and energized the system which puts pump pressure on the rail with the engine off. I think he said that two or three of six were dripping, not at the same rate so I had him replace all six.

Another thought - on my '33 with Edelbrock injection, my Fuel Pressure Regulator failed and was sucking raw fuel through the diaphragm. I called Edelbrock and the Tech knew immediately that my FPR was leaking and sent me a new one. For troubleshooting, I copied this from an OEM forum -
"Did you check the FPR by pulling the vacuum line off while the engine is idling?? Just pulling the vacuum line off may not show if there is leakage past the diaphragm as the fuel will get sucked away by the vacuum and thru the vac line and into the intake. Pull the vac line off while the engine is idling and plug it(the vac hose, not the nipple on the FPR). Let it idle for several minutes and watch the vac nipple on the FPR for any signs of fuel leakage."