Fuel Pressure Regulator (All Models Except Swift SOHC)
- Regulator is mounted to throttle body, above TPS (Samurai and Sidekick) or at end of fuel rail closest to distributor (Swift DOHC).
- Start and idle engine. Disconnect vacuum hose from regulator. If vacuum is present, go to next step. If no vacuum is present, check for blocked hose between regulator and intake manifold.
- Check fuel pressure with engine running and vacuum hose connected to regulator. Disconnect vacuum hose from fuel pressure regulator. If fuel pressure does not increase, replace fuel pressure regulator.