murcury 4 stroke EFI 2005

by Dave Cain
(Vassalboro Me)

The motor starts and will run at 5000 RPM for about 5 minutes and goes into limp mode and wont run any faster than 3ooo RPM. I have replaced all filters, gas lines, heat sensor,impeller, and plugs.

Had a local marine hook it up to the diagnostic machine and they got no bad readings. This happens when the boat is on the lake, not when it is not under a load hooked to a hose. Help

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