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This is non skyline related but similar reg on my patrol.

Around 3 months ago i burst a line from the fuel pump on top of the tank. I didnt have time to replace it then so i just pulled pump fues out and ran on LPG.

Anyway i dropped the tank yesterday and fixed the line, hooked it all up and NOTHING. Pump still works and seems to have pressure but not running on petrol.

There is fuel all the way to Fuel reg but when i took of the return line from the fuel rail there is nothing!!

Pulled off fuel reg and there was some crap in there that looked like the inside of the old fuel line (I replaced all the fuel lines). I pulled that out but the reg is still not letting fuel through.

Just hooked a guage up and there is 90PSI there.

I also grabbed a FPR off an r33 (i think it was working) and still no fuel going past reg.

Any ideas on what could be causing this???? The fuel filter is fine and the return line to tank is not blocked (tested)

Cheers

James

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https://www.sau.com.au/forums/topic/258142-fuel-pressure-reg/
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