rebuilt tranny and now can't get truck to start. turns over. fast at first but quickly slows. new battery. truck was running fine when
parked.. a relay or fuse popped i think. something popped. fuel pressure ok. have fire at #1 plug. starter did sit
outside in a plastic tray under truck while i did tranny. not in direct rain tho. thinking possibly brushes. help!

 

update! motor is turning backwards when trying to start. what in the.....? again, was starting and running ok when parked.

 

 

Year, Make, Model, Engine?

Check the polarity of your new battery.