checked everything i could think of an all seems ok, i did take the manifold off the head an i also removed the throttle body from the manifold. i cleaned up both surfaces b4 putting the manifold back on an put a new gasket in. is it poss that ive got the timing wrong on the cam? ive set it to basic tdc but the instructions with the cam say the timing is to be set at 115 degrees. ive no idea how to set it up to this and im assuming id need proper equipment and cant do it myself at home.