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Ok, so this is my first time posting on a forum. So forgive me for my ignorance. I just bought a 2003 sv650, the person that I bought it from put an engine that he bought off ebay. He said that the engine has around 3000 miles on it when he bought it. After he put the "new" engine in it he couldn't get it to run. He bought the bike from someone who used it as a "track bike", The bike has a power commander on it but if I am correct it is disconnected completely.
As of right now the bike turns over but backfires. Since I bought it I cleared a c23 fault but I already put the tos back how it should be. It is getting fuel and spark and air. When I crank the engine over it backfires after afew cranks, and smoke comes out of the throttle body which leads me to beleive that the timing is off by alot, but i dont know how to check it and I am wondering if maybe I am missing something. I am open to any thoughts and advice thanks!
 
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