I bought the 79 280Z for my Step daughter she has had it for 6+ months and it has ran great. The other day her uncle drove the car bought some gas, right after that it died. I went by replaced the fuel filter ( it looked like it had honey in it) the car now will idle, it has 30 PSI fuel pressure @ idle and 38 with the engine off. The readings were taken on the engine side of the fuel filter. I can spray carb cleaner in the air breather and the car will run fine and rev nicely. So I know it's a fuel issue. If I turn the key on for a few seconds then crank the car it idles fine for a few seconds then struggles to idle. If you hold the gas down it you can hear it Moan and backfire through the intake a bit. then when you let off it reves up for a second or two then goes back to rought idle. Any Ideas?