replaced engine with a jasper remaned. ever since we have had code 1345. we have replaced the distributor, ecm, crank sensor, fuel injector & have checked wiring. put the distributor in every way possible just to rule out being in a tooth off. we have counted teeth on reluctor gear. have contacted jasper engine regarding this & everything they have suggested has turned out ok. timing is at -17 to -25. closer to 0 we go, the worse it runs.the engine did come with an rv cam in it.

any hints, help or suggestions would be appreciated.