hey guys awesome forum. I just had my engine rebuilt and after i dropped it back in it cranks but wont fire. I have fuel and spark. what would cause this. I need help fast![sm=smiley29.gif]

 

who rebuilt it? if it was anyone other than you.. go kick him in the teeth and tell him to fix it! Im thinkin hard, and not comin up with anything though brah.. you have fuel, you have fire, usually thats all you need to start it up.. hmm.. I'll see what I can find for ya

 

Three things to make an engine start. 1) fuel. 2) spark 3) compression.
Check your timing, see if it on the mark.