i got a caravelle with a 2.3 cobra motor i put elec. igntion in dist. runs great in the yard reeves idles but when i put it in the lake it dont want to go ive checked compresion timing just dont want to plan out its like low throttle its alright bot when i try to get down on it it dont want to go if any one might know the problem or direction to point me in it would be great thanxs: