Help Determine Fd Problem
 

93 FD 90 PSI on front rotor, 40 PSI on rear rotor won't start, floods
Mods: Haltech E6K stock primary injectors 1600 secondaries T71 single turbo, fuel system upgrade, also i noticed that as soon as i turn the key of the fuel pressure drops to zero fast. Engine ran one day and the next morning did not want to start. Last night it ran it backfired on highway. There is no coolant loss, Apex seals seem to be there, could it be possible that the apex seals springs broke or are no good? Any suggestions?

are you getting that compression on all 3 rear faces?? were you boosting when it popped on the freeway? probably cracked apex

yes, there seems to be compression on all faces of both rotors.
thats what leads me to belive the apex springs are bad, and no it poped when i let off the gas.

Is the 40 PSI consistent on all 3 faces of the rear rotor? If so, it sounds like you have a scored housing.