.045
035
The spark plug gap for a 1979 Ford F-250 with a 400 engine is between 0.42 and 0.46. This range is included in the factory settings.
.044 inch according to fordparts.com
.035
The spark plug gap on a 2000 Kodiak 400 is .024
The correct spark plug for this motorcycle is: NGK D8EA
To change the spark plug on a 2004 Suzuki Eiger 400, first, ensure the engine is cool and disconnect the negative battery cable. Remove the spark plug cap and use a spark plug socket to unscrew the old spark plug. Before installing the new spark plug, check the gap and adjust it if necessary. Finally, screw in the new spark plug, reconnect the spark plug cap, and reattach the battery cable.
it could be a bad spark plug wire or the plug could be gapped to much
400 ci spark plug r-46ts spark plug gap .040 point dwell 28 to 32 point gap .016 ignition timing 12b fuel pump pressure 5 to 6 1/2 idle speed 650
.028
.028
.060