Suba_GL_87 Posted April 20, 2015 Share Posted April 20, 2015 Why fuel pump was on for 3 secs and then off.. When I turn key on and fuel pump was buzz and stop for 3 secs. i was replaced ele. Fuel pump than carb pump. Everything is good running when I put starting fluid. 87 Subaru gl ea82 carb manual. Came in ej22 from Legacy 91' manual. Link to comment Share on other sites More sharing options...
Gloyale Posted April 20, 2015 Share Posted April 20, 2015 This is normal for ej22 operation. Link to comment Share on other sites More sharing options...
Suba_GL_87 Posted April 20, 2015 Author Share Posted April 20, 2015 But should be fuel pump all the time?? No gas into engine..just 3 secs and gas got killed it. Link to comment Share on other sites More sharing options...
Legacy777 Posted April 21, 2015 Share Posted April 21, 2015 The ECU primes the fuel system (runs the pump for 3 secs) and then turns off if it does not detect the engine cranking. Once the ECU starts receiving a crank signal it will turn the fuel pump on. This is a safety feature in the event you're in a crash, the fuel lines are damaged, and the engine has stopped. The ECU will shut off the fuel pump so it's not pumping fuel all over the place. Link to comment Share on other sites More sharing options...
Suba_GL_87 Posted April 21, 2015 Author Share Posted April 21, 2015 Yes. When I starting the cranking... It's nothin to running.. But when I turn on key.. It was fuel hose was just flow a 3 secs and stop.. (not really good pressure, btw) -400 posts - Link to comment Share on other sites More sharing options...
Dj7291993 Posted April 23, 2015 Share Posted April 23, 2015 Is there spark or injector pulse? If the ECU doesn't see that the engine is turning over, it won't fire the fuel pump. Also, did you use the fuel pump relay off the ej harness, or are you still using the stock one? Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now