austinramsay

I have a single turbo fd boosting 13psi. I just got the car today and the previous owner told me one of the fuel injectors is stuck open. What injectors do i need to get? What size cc and i dont get how many injectors are there? 2 primary and 2 secondary? Where would you recommend buying them from?

ArmyOfOne

iTrader: (12)

The FD has 2 primary 550cc side feed primaries and 2 850cc side feed secondaries. If your car is stock and you have never dealt with one of these setups it is going to be a royal PITA. I would remove the injectors and send them out to be cleaned and tested.

If it is stuck then there must be some contamination in the fuel system. Change the fuel filter and feed the fuel in the tank to your lawnmower.

Reinstall them and top off with fresh fuel.

Tip, be very gentle with all vacuum lines and wire harness as they will be hard and brittle.

Good luck and keep us posted. Take good notes and photos so you can get it all buttoned back up right.

Jesus

austinramsay

Thanks! So even with a single t78 turbo on 13psi i could use 550cc and 850cc's? Is there any guides to changing my injectors?

ArmyOfOne

iTrader: (12)

Does the system have a programable ECU or PowerFC? Is so you can look at the map and see what is in there. At the very least there should be 4 850cc injectors on that. But it needs to be programable ECU to tune it.

at around 14 PSI the stock injectors will peg out at 100% duty cycle depending on AFR.

austinramsay

Power fc, how would i look at the map? I honestly dont know too much about tuning this is my first turbo car so ive just started learning all this a few weeks ago, but im pretty knowledgeable with everything besides turbos/tuning haha

ArmyOfOne

iTrader: (12)

Look into the Engine Management portion of the forum. All your answers lurk therein.