28 hp VanGuard Briggs EFI with no fuel

G

gregjo1948

Well-Known Member
This engine is on a FW35 Ferris walk behind mower. The engine isn't getting fuel into intake manifold. The fuel pump is working as it should. It runs, if I drizzle gas down the air intake tube. Because it is EFI, I think it's possibly not getting power to the injectors to open. I haven't found any broken wires or connections nor have I found any fuses. I'd appreciate any ideas, gregjo1948
 
Most likely scenario is a power and ground issue at the ECM. When the key is cycled on how long does the fuel pump run. 2 seconds or 1/2 second. The short run time would point toward a safety circuit issue. Supposedly there is a blue 15 amp fuse on the engine that controls power to the ECM. After that is starts getting complicated. Requires back probing connectors and checking voltages.
 
I didn't time the pump run time but, I say it runs at least 2 seconds.I haven't found the fuse. thanks for your reply, gregjo1948
 
Run it on flammable spray juice. If she fires over then dies when the spray is gone, you have a fuel delivery issue. You can then test the injectors out of the engine to see them spray. Check fuel pressure.

Do you have spark? Don't just stop at a fuel issue as it is EFI.
 
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