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1998 Camaro return style vette rail...I changed over to a walbro 450lph pump.. now I'm getting fuel pressure to the rail but none getting by the regulator.
Bought a new regulator..no change.
Any insight? Anyone else had this problem I've searched but came up with nothing.
Regulator is in tank on all fbody applications. There was a rumor that late 97 production ls1 fbodies used in pre development testing had regulators on the fuel rail. Companies received the pre production 98 models for testing and made products according to that vehicle. Companies like typhoon advertise a 98 needs a special fuel rail with a new regulator however it does not
Even my Dec 97 trans am had no fpr.
So you're not suppose to have a regulator like a vette does
Well for whatever reason mine doesn't have an in tank regulator it has the return style 97 Vette rail and has had that setup since I bought the car 3 years ago...this issue has me puzzled...I can pull the regulator and prime the pump and fuel shoots everywhere...put regulator back in and nothing gets past it.
Well for whatever reason mine doesn't have an in tank regulator it has the return style 97 Vette rail and has had that setup since I bought the car 3 years ago...this issue has me puzzled...I can pull the regulator and prime the pump and fuel shoots everywhere...put regulator back in and nothing gets past it.
This tells me that your regulator is leaking (stuck open) which relieves pressure into the the return line so you see no pressure at schrader valve.
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No fuel at schrader valve 
