Wastegate actuator bad? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Karkarbink · 11-21-2012, 12:29 PM

So I have my boost controller set at 7psi on my GT28 and I was driving and boosting as normal but all of a sudden it open to over 15psi. I also was boosting at 7psi and spiked to 10psi.. I'm thinking that my wastegate is screwed.. I can on move the wastegate about 1 inch with a good grip with pliers. Bad wastegate? Anything I can do to free it up? guessing it is stuck closed?

Mikester · 11-21-2012, 01:56 PM

Check the boost line between the Boost source & boost controller... and between the boost controller & the actuator. Sounds to me like the actuator is fine and is not receiving the "open" pressure from the controller.

Going over 15psi is not the wastegate opening; it's the wastegate NOT opening. The wastegate opening is what keeps you from overboosting.

11-21-2012, 12:29 PM	#1
Karkarbink Join Date: Sep 2012 Location: SD Age: 34 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	Wastegate actuator bad? So I have my boost controller set at 7psi on my GT28 and I was driving and boosting as normal but all of a sudden it open to over 15psi. I also was boosting at 7psi and spiked to 10psi.. I'm thinking that my wastegate is screwed.. I can on move the wastegate about 1 inch with a good grip with pliers. Bad wastegate? Anything I can do to free it up? guessing it is stuck closed?

11-21-2012, 01:56 PM	#2
Mikester Nissanaholic! Join Date: Jun 2007 Location: Kathleen, GA Age: 53 Posts: 1,956 Trader Rating: (0) Feedback Score: 0 reviews	Check the boost line between the Boost source & boost controller... and between the boost controller & the actuator. Sounds to me like the actuator is fine and is not receiving the "open" pressure from the controller. Going over 15psi is not the wastegate opening; it's the wastegate NOT opening. The wastegate opening is what keeps you from overboosting. __________________