My engine won't start - it started smoking and got harder and harder to start. Now it won't start at all and my go kart is only a few months old, less than 1000 miles and haven't driven it hard at all. I have a flat yard, no hills or rocks, check the oil each time. So, looking to replace my engine with, http://www.northerntool.com/shop/tools/product_554303_554303 , My engine area placement: W=9.5 x H=13 x L=23 =2,662. Honda area: L=12 x W=13.375 x H=12.5. This is the go kart I have http://www.kandiusa.com/product_veh.php?id=242 . This is the engine I have now: http://www.buggydepot.com/product/377/gy6-engine-150cc.html. I really don't want another Chinese engine. Please contact me if you need more information, have advice as to what I should do or if you have a better engine that I can use to replace it.