Car seems to struggle to start from cold. Second time cranking it starts, it seems that the fuel pump does a quick prime like 1/2 a second to 1 second then it struggles to start.

If I turn the ignition for a second time the pump primes for about 3/4 seconds and it fires right up! What is causing the pump to prime briefly the 1st time?

Car is a 2002 bugeye sti, green panel filter, Perrin turbo intake, 3 port boost solenoid running 340bhp not sure what fuel pump?
Thanks for your time Marc

 

i had same prob before with my bug, it had standard pump in so i put walbro one in and now it starts 1st pick, walbro is bit loud for a few seconds then goes quite, id say take out the pump and have a look,also change your fuel filter.

 

Thanks mate, once it fires it runs fine.