[Shamu406]

It has been turning over and running great all week and all of a sudden today it turns over great but does not fire up the only thing I noticed is that the engine check light does not come on when I turn the key on. 
Has 1/4 tank of fuel, good battery. 
Ive only done 2 things since yesterday when it was starting right up fine.
I changed the governor. 
And I  changed all the house batteries, but after doing so, none of my DC powered items work, which is another problem all it own. 
Any help or advice would be greatly appreciated. 
John