Marquis 7000 7NHMFA26106C Will Crank, But Not Start

[Cl7aude1]

My Marquis 7000 7NHMFA26106C will crank, but will not start. It was running fine about two weeks ago.

Parts that are Good:

Full Tank of New Fuel in Fuel Tank; New Spark Plugs; New Fuel Filter; New Air Filter; Oil

and Filter changed; New Spark Plugs; New Control Board.

Tests I have completed:

12V measured at P1-7;

10V measured at P1-6;

9.3V measured when connected Voltmeter directly to Fuel Pump and hit Start

Switch from Control Board. (I believe Fuel Pump should be able to run at 8Volt)

I disconnected Fuel Hose from Fuel Filter and put hose in Jar. When I hit

the Start Switch, NO Fuel came out of hose from Fuel Pump.

When I Connected a direct wire from a 12V Battery to the Pump, the Pump

pumped plenty of Fuel.

Anyone know what I might test next?

[hermanmullins]

WELCOME TO THE FORUM.

Check and see if you have a relay in the fuel electrical circuit. From what you have tested it has to be a relay or fuse for the fuel pump.

Good, Luck

[Cl7aude1]

As a final update. The Genset would run for about 3 or 4 minutes, then it would stop running. Genset started each time only after priming the Fuel Pump.

Solution: Replaced the Fuel Pump and it runs great. Thanks for your help.