Jhonson 175 hp warm-up position in run ...the engine off.

[dlevental]

Hi, how are you? I have a Johnson 175 HP model 1980. In the command when I put the ignition handle or accelerator (warm-up positions) on the initial, the engine starts perfect. After a few minutes when when under the knob (warm-up to run position) .... the engine shuts down. The carburetors were cleaned, and the starting bendix was changed. What can be?

 

[racerone]

First thing is a compression test.-----Then see if there is spark on all six leads.