Question about Briggs & Stratton Briggs Stratton Vanguard V - Twin Vertical Ohv Engine with Electric Start 23 Hp, 1" X 3 5/32" Shaft, ModelNo. 386777 - 0036 - E1

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Have 303447 briggs 16 hp only fires one cylinder

Have 303447 briggs 16 hp only fires one cylinder swap coils same one no fire both have 110 conpression what could be problem

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Have you also changed the spark plug too. The ignition circuit is pretty simple, from the battery, the Coil is energized, the "points" or equivalent, through the "Distributor" or equivalent, and onto the Spark Plug. So it is a simple matter to work along the path, proving the "Integrity" at each, point by testing. IF it still doesn't fire after ensuring all Leads are OK, the Spark Plugs are proven OK, the Cables, the Points, & Distributor, . IT is either that or the Ignition Timing is OFF. Please check all those points.

Posted on Apr 23, 2010

  • brycesackett Feb 24, 2011

    Also check if there is a diode installed on the kill wire off the coil, it will be black. if the diodes are fried then that coil or both won't fire.

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SNAPPER RIDING LAWN MOWER (CONVERTIBLE) / BRIGGS & STRATTON TWIN V MOTOR BY VANGUARD.

MODEL 303777,

TYPE1145-A1 (4756 UNDERNEATH THE 1145-A1)

CODE 95101011

PROBLEM, WHEN I TURN THE IGNITION KEY, IT IS JUST LIKE THERE IS NO BATTERY IN IT.

I HAVE DONE THE FOLLOWING:

THE NEW BATTERY IS FULLY CHARGED,
REPLACED THE INGITION SWITCH, SOLENOID, ALL KILL SWITCHES CHECK OUT OK, JUMP SOLENOID- THE MOTOR TURNS NORMAL BUT NO FIRE TO MAGNETOS, CLEANED FLYWHEEL OF RUST, ALSO THE MAGNETOS, GAPPED BACK TO .010, REMOVED FLYWHEEL AND CLEANNED ALL DIRT AND GRASS. HAVE CHECKED EACH WIRE FOR CONTINUETY. ALL OK.



THERE ARE TWO WIRES COMING FROM THE COIL UNDER THE FLYWHEEL, ONE RED THAT CHANGES TO A WHITE WIRE THAT GOES TO THE NEG. POST ON THE SOLENOID. THE OTHER WIRE FROM UNDER THE FLYWHEEL IS BLACK. IT GOES TO THE SAME CONNECTOR AS THE RED ONE DOES, HOWEVER IT GOES NO FARTHER, IT IS JUST PLACED IN THE CONNECTOR. I HAVE BEEN UNABLE TO FIND A WIRE DIAGRAM USING THE ABOVE NUMBERS FOR THE MOTOR.

THANKS IN ADVANCE.
Hh

Posted on Apr 20, 2011

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I just went this very same thing here a few weeks ago. In my case I started out one dead coil for sure installed new coil and still had no fire. Remove the kill wire as I normally do during testing in case a short and the new coil fired fine. Easier to just replace the wire harness then repair it. Out of curiosity I checked out the wiring harness and found one diode shorted and other one leaky.

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