October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Fuel Pressure Regulator Diaphragm
- Start and operate engine at idle for 10 seconds. Turn ignition off for 10 seconds. Again, start and operate engine at idle for 10 seconds, then turn ignition off.
- Disconnect fuel pressure regulator vacuum hose. Check fuel pressure regulator vacuum port. If diaphragm is leaking fuel, replace fuel pressure regulator.